In the early hours of August 18 in 2022,a mountain flood disaster occurred in Datong Hui and Tu Autonomous County,Xining City,Qinghai Province,resulting in 31 deaths.This typical incident of multiple casualties result...In the early hours of August 18 in 2022,a mountain flood disaster occurred in Datong Hui and Tu Autonomous County,Xining City,Qinghai Province,resulting in 31 deaths.This typical incident of multiple casualties resulting from a mountain flood disaster caused by heavy precipitation.In this paper,the mountain flood disaster was analyzed from three aspects,the distribution of the observation station network,assessment of minute-level precipitation,and quantitative precipitation estimated by Xining radar data during August 17-18,2022.It aims to identify the critical gap in comprehensive monitoring systems,and explore effective monitoring methods and estimation algorithms of minute-level quantitative precipitation.Moreover,subsequent defense countermeasures were proposed.These findings offer significant guidance for enhancing meteorological disaster prevention capabilities,strengthening the first line of defense in disaster prevention and mitigation,and supporting evidence-based decision-making for local governments and flood control departments.展开更多
This study investigates the distribution,geochemical behavior,and potential anthropogenic influences of rare earth elements(REEs)in the surface sediments of Qinghai Lake,the largest saline lake in China.A total of 36 ...This study investigates the distribution,geochemical behavior,and potential anthropogenic influences of rare earth elements(REEs)in the surface sediments of Qinghai Lake,the largest saline lake in China.A total of 36 surface sediment samples were analyzed for REE concentrations with a combination of self-organizing maps(SOM)and positive matrix factorization(PMF).Results indicate distinct enrichment patterns,with light REEs(LREEs)exhibiting higher concentrations than heavy REEs(HREEs),reflecting natural abundances and geochemical behaviors.The minimum value was found in Lu as low as 0.091 mg/kg,and the maximum concentration was exhibited in Ce at 78.877 mg/kg.Geoaccumulation index(I_(geo))analysis reveals minor to moderate enrichment of specific REEs of Sm and Nd,suggesting possible localized anthropogenic inputs,particularly near river mouths.Spatial analysis using inverse distance weighting(IDW)and self-organizing maps(SOM)highlights significant correlations between REE distributions and riverine inputs,underscoring fluvial transport's role in sedimentary REE dynamics.PMF identifies mixed natural and anthropogenic sources,with agricultural and industrial activities contributing to elevated REE levels in sediment.These findings provide critical insights into the geochemical behavior of REEs in saline lake systems and off er a foundation for pollution control and sustainable resource management in sensitive environments like Qinghai Lake.展开更多
Wenlan FENG,Pierre MARIOTTE,Jun GU,XiaodongSONG,JinlingYANG,Fei YANG,Yuguo ZHAOand Ganlin ZHANG In the fourth and fifth lines of the study area section on Page 903,the mean annual temperature(MAT)and precipitation(MAP...Wenlan FENG,Pierre MARIOTTE,Jun GU,XiaodongSONG,JinlingYANG,Fei YANG,Yuguo ZHAOand Ganlin ZHANG In the fourth and fifth lines of the study area section on Page 903,the mean annual temperature(MAT)and precipitation(MAP)values are incorrect.They should be—17 to 24.2°C and 18.3 to 3155 mm,respectively.展开更多
The thawing and warming of ice-rich permafrost present a considerable threat to the long-term stability of the Qinghai-Xizang Railway(QXR)on the roof of the world—that is,the Qinghai-Xizang Plateau(QXP).In this revie...The thawing and warming of ice-rich permafrost present a considerable threat to the long-term stability of the Qinghai-Xizang Railway(QXR)on the roof of the world—that is,the Qinghai-Xizang Plateau(QXP).In this review,we explore the extent of the observed permafrost degradation and embankment damage under the coupled impacts of climate change and engineering construction.The ice-rich permafrost beneath the embankment presents a substantial threat to the thermal-mechanical stability of the embankment due to the permafrost’s accelerated and amplified degradation.The observed embankment deformation has a potential high risk of thaw settlement,especially for 656 embankment-bridge sections,whose potential high risk of thaw settlement may be as great as 25%.Several techniques for roadbed cooling can be used to alleviate these impacts,including crushed rock structure embankments(CRSEs),thermosyphons,and reinforcement measures,which have been demonstrated to be successful in cooling the underlying permafrost and stabilizing an embankment.Under future climate change and permafrost degradation,however,the QXR still faces a high risk of embankment damage caused by permafrost degradation and requires more effective methods to reinforce the thermal-mechanical stability of permafrost.Therefore,a better understanding of such high-risk regions is needed,and roadbed cooling techniques will require further adaption in order to address the issues brought by climate change.展开更多
The Qinghai-Tibet Plateau(QTP),the“Third Pole of the Earth,”boasts the most complex,diverse,and unique ecosystem in the world.From tropical vegetation on the southern slopes of the Himalayas to alpine subnival ecosy...The Qinghai-Tibet Plateau(QTP),the“Third Pole of the Earth,”boasts the most complex,diverse,and unique ecosystem in the world.From tropical vegetation on the southern slopes of the Himalayas to alpine subnival ecosystems,and from humid forests in the east to arid Gobi or desert vegetation in the west,the QTP encompasses nearly all the ecosystem types found in the Northern Hemisphere(The Comprehensive ScientificExpedition to Qinghai-Xizang Plateau,Academia Sinica,1988).展开更多
Editor’s Note:On the northeastern edge of the Qinghai-Xizang Plateau,Qinghai weaves a dynamic ecological symphony composed of four distinct natural languages.Here,one can find not only solidified waves-represented by...Editor’s Note:On the northeastern edge of the Qinghai-Xizang Plateau,Qinghai weaves a dynamic ecological symphony composed of four distinct natural languages.Here,one can find not only solidified waves-represented by the crystal-clear Qarhan Salt Lake-but also flowing flames-the passionate hues of the Guide Danxia landscape.展开更多
Kashin-Beck disease(KBD)is a regionally endemic chronic osteoarthropathy,while osteoarthritis(OA)is a degenerative joint disease characterized by progressive articular cartilage degradation and extracellular matrix re...Kashin-Beck disease(KBD)is a regionally endemic chronic osteoarthropathy,while osteoarthritis(OA)is a degenerative joint disease characterized by progressive articular cartilage degradation and extracellular matrix remodeling.Although KBD and OA share overlapping clinical and pathological features,key differences exist in their etiology and disease progression.KBD preferentially affects children aged 3-12 years,whereas OA predominantly affects older individuals between the age of 40-60 years.KBD cartilage necrosis originates in the deep layers of the epiphyseal plate and articular cartilage,progressing toward the cartilage surface.In contrast,OA cartilage destruction initiates at the articular cartilage surface and gradually progresses to expose the subchondral bone[1,2].展开更多
In China,some species of Bupleurum (family Umbelliferae) have been used as Chinese traditional medicine under the name “Chai-Hu” for the treatment of fevers and influenza.In the present paper,the authors report a st...In China,some species of Bupleurum (family Umbelliferae) have been used as Chinese traditional medicine under the name “Chai-Hu” for the treatment of fevers and influenza.In the present paper,the authors report a study on the investigation and exploitation of new medicinal resources of “Chai-Hu” in Qinghai Province and Xizang (Tibet) Autonomous Region where no one has studied this hitherto.18 species,7 varieties,I form of Bupleurum and a new species (Bupleurum qinghaiense) have been discovered.The taxonomy and preliminary phytochemical studies of the roots of three medicinal plants,B.qinghaiense,B.rnarginatum var.stenophyllum and B.smithii var.parvifolium.are reported in this paper.展开更多
The paper aims to study the impacts and countermeasures of climate change on animal husbandry in Qinghai plateau and its surrounding area,and evaluate the effect of countermeasures.Results showed that：First,the annua...The paper aims to study the impacts and countermeasures of climate change on animal husbandry in Qinghai plateau and its surrounding area,and evaluate the effect of countermeasures.Results showed that：First,the annual mean temperature,annual mean maximum temperature and annual mean minimum temperature showed an increasing trend in Qinghai plateau during the time from 1961 to 2008; the annual precipitation had not obvious change,but the obvious feature of seasonal change; wind speed and sunshine hours showed a decreasing trend during the time from 1961 to 2008.Secondly,under the current climate condition,grassland productivity showed a decreasing trend,and the grassland theoretical capacity affected by grassland productivity decreased too; warm winter was in favor of livestock overwintering safely,which resulted in a high level of the survival rate of young stock; temperature increasing and precipitation decreasing were beneficial to the fatness of livestock,but the meat yield of livestock was affected by some negative factors such as grassland degradation; livestock diseases had a close relationship with weather condition,and adverse weather condition may arose many diseases of livestock.Thirdly,in view of the current problems of livestock production,we took a series of countermeasures including grass industry construction,livestock improvement,developing new modes of animal husbandry,control and prevention of stockbreeding diseases and insect pests and recovery of meteorological disasters,which played a important role in promoting grassland productivity,solving the problem of the imbalances between livestock and forage,protecting the ecological environment and improving livestock performance.展开更多
[Objective] The aim was to investigate the prevalence of Mycoplasma capricolum subsp. Capripneumoniae in Qinghai Province. [Method] By using indirect hemagglutination test kit for detecting Mycoplasma capricolum subsp...[Objective] The aim was to investigate the prevalence of Mycoplasma capricolum subsp. Capripneumoniae in Qinghai Province. [Method] By using indirect hemagglutination test kit for detecting Mycoplasma capricolum subsp. Capripneumoniae,208 goat serums were detected. [Result] The positive rate of goat sera was 16.3%,and the positive rate of sera from different regions ranged from 6.7% to 24.3%. [Conclusion] The infection rate of Mycoplasma capricolum subsp. Capripneumoniae was high in Qinghai Province,so it is necessary to strengthen the prevention and control of this disease.展开更多
[Objective] The aim was to study climate changes and its effects on agriculture in Haidong agricultural region.[Method] Based on meteorology and agricultural observation data in Haidong agricultural region from 1961 t...[Objective] The aim was to study climate changes and its effects on agriculture in Haidong agricultural region.[Method] Based on meteorology and agricultural observation data in Haidong agricultural region from 1961 to 2009,the characteristics of climate change and its effects on agriculture were analyzed,and the possible effects of future climate change on Haidong agriculture were predicted according to the future climate scenarios provided by down-scaling climate model.[Result] Annual mean temperature in Haidong agricultural region during 1961-2009 showed obvious increase trend,with the rising rate of 0.37 ℃/10 a;annual mean precipitation and annual total sunshine duration went down slightly,with the climatic tendency of 3.70 mm/10 a and-27.55 h/10 a,respectively;climate extreme event occurred less frequently but became severer in recent 49 years.In future 100 years,temperature in Haidong agricultural region would go up significantly,with the slight increase of rainfall,and climate changes would affect agricultural production environment,arrangement,structure and productivity,namely increasing yield fluctuation of agricultural production,cost and investment and changing arrangement and structure.In order to adapt climate change,it was necessary to adjust agricultural structure,strengthen management,improve agricultural infrastructure,adopt new technology,increase the resistance ability of agricultural production to climate change actively and designedly,so as to improve adaptability,furthest reduce loss and realize potential benefit.[Conclusion] Our study could provide references for the decision of government and agricultural sector.展开更多
The study introduced protected agriculture development in Qinghai province and concluded its development scale, type and structure, as well as technology supports. Besides, existing problems were proposed such as lowe...The study introduced protected agriculture development in Qinghai province and concluded its development scale, type and structure, as well as technology supports. Besides, existing problems were proposed such as lower production-level, poor equipment, fewer specialized bases, and countermeasures include the following： leading protected agriculture development by macro-control; strengthening market supervision; improving scientific research and innovation to help S ＆ T achievement transformation.展开更多
Using path analysis, correlation analysis, partial correlation analysis and system dynamics method to study the driving force of cultivated land in Qinghai Lake Area, and using gradually regression analysis to establi...Using path analysis, correlation analysis, partial correlation analysis and system dynamics method to study the driving force of cultivated land in Qinghai Lake Area, and using gradually regression analysis to establish the driving force model of utilized change of cultivated land. Driving factors, action mechanism and process of utilized change of cultivated land were analyzed, and the differences during all factors were compared. The study provides some decision basis for sustainable utilization and management of land resources in Qinghai Lake Area.展开更多
Under the influence of the natural and human factors, water table of irri- gated area Changes frequently, but it is mainly affected by irrigation water infiltration replenishment during the irrigation. 5 groundwater o...Under the influence of the natural and human factors, water table of irri- gated area Changes frequently, but it is mainly affected by irrigation water infiltration replenishment during the irrigation. 5 groundwater observation wells were constructed in experimental plot of the Daxia irrigated area to carry out the experiment of the effect of irrigation on groundwater dynamic change in this research. The results showed that the groundwater stage dynarnic change rule of spring and seedling irri- gation stage in the typical plot was fit to the hydrological geology condition of grade- I terrace of Huangshui river valley. On the whole, lateral canal water direction formed a line effect. The No. 1 and No. 2 observation well were the closest to the lateral canal, which received more supplies, and the water level was the highest; the No, 3 observation well took the second place; The No. 4 and No. 5 observation well accepted least supplies, and the water level was the lowest. The rangeability of water table of spring irrigation period was significantly higher than that of seedling irrigation period, this is mainly due to the difference value of intake water volume and drainage water volume of spring irrigation phase was significantly higher than the seedling irrigation phase.展开更多
Using organic carbon density grouping method,the change trends of soil total organic carbon(SOC),light fraction content and light fraction organic carbon under 4 land use patterns of returning cultivated land to fores...Using organic carbon density grouping method,the change trends of soil total organic carbon(SOC),light fraction content and light fraction organic carbon under 4 land use patterns of returning cultivated land to forest(cropland,artificial forest,inter-cropping of forest and grassland and original sample plot)in alpine agricultural region of Qinghai were studied.The content of SOC was in order:intercropping of forest and grassland > original sample plot > artificial forest > cropland.There was signi...展开更多
[Objective]The aim was to analyze genetic diversity of SSR markers in Hordeum vulgare L.in Qinghai Province and lay a foundation for screening and protecting some excellent H.vulgare cultivars.[Method]SSR markers were...[Objective]The aim was to analyze genetic diversity of SSR markers in Hordeum vulgare L.in Qinghai Province and lay a foundation for screening and protecting some excellent H.vulgare cultivars.[Method]SSR markers were used to evaluate the genetic diversity of 42 cultivated H.vulgare from Qinghai Province.[Result]42 H.vulgare showed polymorphism in 7 SSR markers locus.A total of 24 alleles were identified,and the number of alleles per locus ranged from 1 to 6,with an average of 3.0.According to SSR markers polymorphism,42 H.vulgare could be divided into 4 groups,namely I,II,III and IV.[Result]The study indicated that cultivated H.vulgare from Qinghai Province is rich in genetic diversity,which will provide reference for selecting parent of H.vulgare breeding.展开更多
Qinghai Lake Watershed （QLW） is a hot place of a series of ecological restoration and environmental remediation programs nowadays.However,little information is available on change of ecosystem service and economic p...Qinghai Lake Watershed （QLW） is a hot place of a series of ecological restoration and environmental remediation programs nowadays.However,little information is available on change of ecosystem service and economic practice in this area.As ecosystem service and natural capital are closely related with social and economic development,an index of concordance between environment and economy （ICEE） has been proposed to compare the annual variation rate of ecosystem service value （RESV） with that of gross domestic product （RGDP）.Using this Index,we have assessed concordance between environment and economy （CEE） for the QLW in the period 1977-2004.The result showed that from 1977 to 2004,the ecosystem service value in the QLW descended from 128.81×10 8 yuan to 127.32×10 8 yuan;In contrast,the GDP increased from 0.931×10 8 yuan to 8.856×10 8 yuan.The values of the I CEE were -1.14,-0.22,and -0.14 in the stages of 1977-1987,1987-2000 and 2000-2004,respectively.The result indicated that during the first stage 1977-1987,the relationship between environment and economy in the QLW was not concordant but at a high conflict;from 1987 to 2004,there was a low conflict between environment and economy,and the CEE appeared to increase slowly.Analysis of the assessment results showed that the national policies and industrial adjustment practice play an important role in the CEE changes.展开更多
Qinghai Province is an important component of the Qinghai-Tibet Plateau in China. Scientific evaluation of the suitability of Qinghai's climate for tourism can contribute to overcoming obstacles posed by climate o...Qinghai Province is an important component of the Qinghai-Tibet Plateau in China. Scientific evaluation of the suitability of Qinghai's climate for tourism can contribute to overcoming obstacles posed by climate on sustainable tourism development in Qinghai Province, including disparities between the low and high seasons, high altitude health concerns, and weather events. A tourism climate suitability evaluation model of the Qinghai-Tibet Plateau is constructed (Tourism Climate Suitability Index, or TCSI), and tourism climate suitability is comprehensively evaluated for Qinghai Province from climate data from 1960 to 2009. Results show that: (I) There is clear distributional characteristics of spatial-temporal variability of TCSI values in Qinghai Province. (II) Tourism climate suitability in Qinghai Province has significant seasonal and regional differences. The year is divided into a very suitable period (July and August), suitable tourism periods (from April and October), less suitable periods (From Nov to Mar). June to August is the most suitable tourism period in Qinghai. Qinghai Province is divided into five levels of tourism climate suitability: most suitable regions, very suitable regions, suitable regions, less suitable regions, and unsuitable region. (III) The key factor which influences regional differences in tourism climatic suitability is atmospheric oxygen. And the key factors which chiefly influence seasonal differences of tourism climate suitability are temperature and humidity, the wind chill factor, and barrier weather.展开更多
基金the Key Research and Development and Transformation Plan Project of Science and Technology Department of Qinghai Province in 2023(2023-SF-111).
文摘In the early hours of August 18 in 2022,a mountain flood disaster occurred in Datong Hui and Tu Autonomous County,Xining City,Qinghai Province,resulting in 31 deaths.This typical incident of multiple casualties resulting from a mountain flood disaster caused by heavy precipitation.In this paper,the mountain flood disaster was analyzed from three aspects,the distribution of the observation station network,assessment of minute-level precipitation,and quantitative precipitation estimated by Xining radar data during August 17-18,2022.It aims to identify the critical gap in comprehensive monitoring systems,and explore effective monitoring methods and estimation algorithms of minute-level quantitative precipitation.Moreover,subsequent defense countermeasures were proposed.These findings offer significant guidance for enhancing meteorological disaster prevention capabilities,strengthening the first line of defense in disaster prevention and mitigation,and supporting evidence-based decision-making for local governments and flood control departments.
基金funded by the Basic Research Program of Qinghai Province(2023-ZJ-910M)。
文摘This study investigates the distribution,geochemical behavior,and potential anthropogenic influences of rare earth elements(REEs)in the surface sediments of Qinghai Lake,the largest saline lake in China.A total of 36 surface sediment samples were analyzed for REE concentrations with a combination of self-organizing maps(SOM)and positive matrix factorization(PMF).Results indicate distinct enrichment patterns,with light REEs(LREEs)exhibiting higher concentrations than heavy REEs(HREEs),reflecting natural abundances and geochemical behaviors.The minimum value was found in Lu as low as 0.091 mg/kg,and the maximum concentration was exhibited in Ce at 78.877 mg/kg.Geoaccumulation index(I_(geo))analysis reveals minor to moderate enrichment of specific REEs of Sm and Nd,suggesting possible localized anthropogenic inputs,particularly near river mouths.Spatial analysis using inverse distance weighting(IDW)and self-organizing maps(SOM)highlights significant correlations between REE distributions and riverine inputs,underscoring fluvial transport's role in sedimentary REE dynamics.PMF identifies mixed natural and anthropogenic sources,with agricultural and industrial activities contributing to elevated REE levels in sediment.These findings provide critical insights into the geochemical behavior of REEs in saline lake systems and off er a foundation for pollution control and sustainable resource management in sensitive environments like Qinghai Lake.
文摘Wenlan FENG,Pierre MARIOTTE,Jun GU,XiaodongSONG,JinlingYANG,Fei YANG,Yuguo ZHAOand Ganlin ZHANG In the fourth and fifth lines of the study area section on Page 903,the mean annual temperature(MAT)and precipitation(MAP)values are incorrect.They should be—17 to 24.2°C and 18.3 to 3155 mm,respectively.
基金financially supported in part by the Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(2021QZKK0205)the National Natural Science Foundation of China(42230512).
文摘The thawing and warming of ice-rich permafrost present a considerable threat to the long-term stability of the Qinghai-Xizang Railway(QXR)on the roof of the world—that is,the Qinghai-Xizang Plateau(QXP).In this review,we explore the extent of the observed permafrost degradation and embankment damage under the coupled impacts of climate change and engineering construction.The ice-rich permafrost beneath the embankment presents a substantial threat to the thermal-mechanical stability of the embankment due to the permafrost’s accelerated and amplified degradation.The observed embankment deformation has a potential high risk of thaw settlement,especially for 656 embankment-bridge sections,whose potential high risk of thaw settlement may be as great as 25%.Several techniques for roadbed cooling can be used to alleviate these impacts,including crushed rock structure embankments(CRSEs),thermosyphons,and reinforcement measures,which have been demonstrated to be successful in cooling the underlying permafrost and stabilizing an embankment.Under future climate change and permafrost degradation,however,the QXR still faces a high risk of embankment damage caused by permafrost degradation and requires more effective methods to reinforce the thermal-mechanical stability of permafrost.Therefore,a better understanding of such high-risk regions is needed,and roadbed cooling techniques will require further adaption in order to address the issues brought by climate change.
基金funded by Key Project of Regional Innovation and Development Joint Fund of National Natural Science Foundation of China(U23A20149)the Second Tibetan Plateau Scientific Expedition and Research(STEP)program(2019QZKK0502,2024QZKK0200).
文摘The Qinghai-Tibet Plateau(QTP),the“Third Pole of the Earth,”boasts the most complex,diverse,and unique ecosystem in the world.From tropical vegetation on the southern slopes of the Himalayas to alpine subnival ecosystems,and from humid forests in the east to arid Gobi or desert vegetation in the west,the QTP encompasses nearly all the ecosystem types found in the Northern Hemisphere(The Comprehensive ScientificExpedition to Qinghai-Xizang Plateau,Academia Sinica,1988).
文摘Editor’s Note:On the northeastern edge of the Qinghai-Xizang Plateau,Qinghai weaves a dynamic ecological symphony composed of four distinct natural languages.Here,one can find not only solidified waves-represented by the crystal-clear Qarhan Salt Lake-but also flowing flames-the passionate hues of the Guide Danxia landscape.
基金supported by the 2023 training program for discipline leaders in natural science and engineering technology of Qinghai province-“Kunlun Talents·Science and Technology leaders.”。
文摘Kashin-Beck disease(KBD)is a regionally endemic chronic osteoarthropathy,while osteoarthritis(OA)is a degenerative joint disease characterized by progressive articular cartilage degradation and extracellular matrix remodeling.Although KBD and OA share overlapping clinical and pathological features,key differences exist in their etiology and disease progression.KBD preferentially affects children aged 3-12 years,whereas OA predominantly affects older individuals between the age of 40-60 years.KBD cartilage necrosis originates in the deep layers of the epiphyseal plate and articular cartilage,progressing toward the cartilage surface.In contrast,OA cartilage destruction initiates at the articular cartilage surface and gradually progresses to expose the subchondral bone[1,2].
文摘In China,some species of Bupleurum (family Umbelliferae) have been used as Chinese traditional medicine under the name “Chai-Hu” for the treatment of fevers and influenza.In the present paper,the authors report a study on the investigation and exploitation of new medicinal resources of “Chai-Hu” in Qinghai Province and Xizang (Tibet) Autonomous Region where no one has studied this hitherto.18 species,7 varieties,I form of Bupleurum and a new species (Bupleurum qinghaiense) have been discovered.The taxonomy and preliminary phytochemical studies of the roots of three medicinal plants,B.qinghaiense,B.rnarginatum var.stenophyllum and B.smithii var.parvifolium.are reported in this paper.
文摘The paper aims to study the impacts and countermeasures of climate change on animal husbandry in Qinghai plateau and its surrounding area,and evaluate the effect of countermeasures.Results showed that：First,the annual mean temperature,annual mean maximum temperature and annual mean minimum temperature showed an increasing trend in Qinghai plateau during the time from 1961 to 2008; the annual precipitation had not obvious change,but the obvious feature of seasonal change; wind speed and sunshine hours showed a decreasing trend during the time from 1961 to 2008.Secondly,under the current climate condition,grassland productivity showed a decreasing trend,and the grassland theoretical capacity affected by grassland productivity decreased too; warm winter was in favor of livestock overwintering safely,which resulted in a high level of the survival rate of young stock; temperature increasing and precipitation decreasing were beneficial to the fatness of livestock,but the meat yield of livestock was affected by some negative factors such as grassland degradation; livestock diseases had a close relationship with weather condition,and adverse weather condition may arose many diseases of livestock.Thirdly,in view of the current problems of livestock production,we took a series of countermeasures including grass industry construction,livestock improvement,developing new modes of animal husbandry,control and prevention of stockbreeding diseases and insect pests and recovery of meteorological disasters,which played a important role in promoting grassland productivity,solving the problem of the imbalances between livestock and forage,protecting the ecological environment and improving livestock performance.
基金Supported by Special Program of National Science and Technology Basic Work (2008FY210200)Special Program of Gansu Agricultural Biotechnology (GNSW-2005-16)~~
文摘[Objective] The aim was to investigate the prevalence of Mycoplasma capricolum subsp. Capripneumoniae in Qinghai Province. [Method] By using indirect hemagglutination test kit for detecting Mycoplasma capricolum subsp. Capripneumoniae,208 goat serums were detected. [Result] The positive rate of goat sera was 16.3%,and the positive rate of sera from different regions ranged from 6.7% to 24.3%. [Conclusion] The infection rate of Mycoplasma capricolum subsp. Capripneumoniae was high in Qinghai Province,so it is necessary to strengthen the prevention and control of this disease.
基金Supported by Climate Change Project of China Meteorological Administration in 2010 (Evaluation Report on Climate Change in Northwest China)~~
文摘[Objective] The aim was to study climate changes and its effects on agriculture in Haidong agricultural region.[Method] Based on meteorology and agricultural observation data in Haidong agricultural region from 1961 to 2009,the characteristics of climate change and its effects on agriculture were analyzed,and the possible effects of future climate change on Haidong agriculture were predicted according to the future climate scenarios provided by down-scaling climate model.[Result] Annual mean temperature in Haidong agricultural region during 1961-2009 showed obvious increase trend,with the rising rate of 0.37 ℃/10 a;annual mean precipitation and annual total sunshine duration went down slightly,with the climatic tendency of 3.70 mm/10 a and-27.55 h/10 a,respectively;climate extreme event occurred less frequently but became severer in recent 49 years.In future 100 years,temperature in Haidong agricultural region would go up significantly,with the slight increase of rainfall,and climate changes would affect agricultural production environment,arrangement,structure and productivity,namely increasing yield fluctuation of agricultural production,cost and investment and changing arrangement and structure.In order to adapt climate change,it was necessary to adjust agricultural structure,strengthen management,improve agricultural infrastructure,adopt new technology,increase the resistance ability of agricultural production to climate change actively and designedly,so as to improve adaptability,furthest reduce loss and realize potential benefit.[Conclusion] Our study could provide references for the decision of government and agricultural sector.
文摘The study introduced protected agriculture development in Qinghai province and concluded its development scale, type and structure, as well as technology supports. Besides, existing problems were proposed such as lower production-level, poor equipment, fewer specialized bases, and countermeasures include the following： leading protected agriculture development by macro-control; strengthening market supervision; improving scientific research and innovation to help S ＆ T achievement transformation.
基金Supported by The Regional Sustainable Development of the Qing-TibetPlateau(2004)~~
文摘Using path analysis, correlation analysis, partial correlation analysis and system dynamics method to study the driving force of cultivated land in Qinghai Lake Area, and using gradually regression analysis to establish the driving force model of utilized change of cultivated land. Driving factors, action mechanism and process of utilized change of cultivated land were analyzed, and the differences during all factors were compared. The study provides some decision basis for sustainable utilization and management of land resources in Qinghai Lake Area.
基金Supported by Water Consumption Coefficient Research in Irrigated Area in the Yellow River Areas in Qinghai Province(QX2012-019)
文摘Under the influence of the natural and human factors, water table of irri- gated area Changes frequently, but it is mainly affected by irrigation water infiltration replenishment during the irrigation. 5 groundwater observation wells were constructed in experimental plot of the Daxia irrigated area to carry out the experiment of the effect of irrigation on groundwater dynamic change in this research. The results showed that the groundwater stage dynarnic change rule of spring and seedling irri- gation stage in the typical plot was fit to the hydrological geology condition of grade- I terrace of Huangshui river valley. On the whole, lateral canal water direction formed a line effect. The No. 1 and No. 2 observation well were the closest to the lateral canal, which received more supplies, and the water level was the highest; the No, 3 observation well took the second place; The No. 4 and No. 5 observation well accepted least supplies, and the water level was the lowest. The rangeability of water table of spring irrigation period was significantly higher than that of seedling irrigation period, this is mainly due to the difference value of intake water volume and drainage water volume of spring irrigation phase was significantly higher than the seedling irrigation phase.
基金Supported by Science and Technology Supporting Project of China during the Eleventh Five-Year Plan Period(2006BAD05B07)~~
文摘Using organic carbon density grouping method,the change trends of soil total organic carbon(SOC),light fraction content and light fraction organic carbon under 4 land use patterns of returning cultivated land to forest(cropland,artificial forest,inter-cropping of forest and grassland and original sample plot)in alpine agricultural region of Qinghai were studied.The content of SOC was in order:intercropping of forest and grassland > original sample plot > artificial forest > cropland.There was signi...
基金Supported by National Science and Technology Support Projects(2007BAD64B01)~~
文摘[Objective]The aim was to analyze genetic diversity of SSR markers in Hordeum vulgare L.in Qinghai Province and lay a foundation for screening and protecting some excellent H.vulgare cultivars.[Method]SSR markers were used to evaluate the genetic diversity of 42 cultivated H.vulgare from Qinghai Province.[Result]42 H.vulgare showed polymorphism in 7 SSR markers locus.A total of 24 alleles were identified,and the number of alleles per locus ranged from 1 to 6,with an average of 3.0.According to SSR markers polymorphism,42 H.vulgare could be divided into 4 groups,namely I,II,III and IV.[Result]The study indicated that cultivated H.vulgare from Qinghai Province is rich in genetic diversity,which will provide reference for selecting parent of H.vulgare breeding.
基金New Century Excellent Talents in University, No.NCET-08-0056 National Natural Science Foundation of China, No.40971110 National Key Technologies R＆D Program, No.2007BAC30B02
文摘Qinghai Lake Watershed （QLW） is a hot place of a series of ecological restoration and environmental remediation programs nowadays.However,little information is available on change of ecosystem service and economic practice in this area.As ecosystem service and natural capital are closely related with social and economic development,an index of concordance between environment and economy （ICEE） has been proposed to compare the annual variation rate of ecosystem service value （RESV） with that of gross domestic product （RGDP）.Using this Index,we have assessed concordance between environment and economy （CEE） for the QLW in the period 1977-2004.The result showed that from 1977 to 2004,the ecosystem service value in the QLW descended from 128.81×10 8 yuan to 127.32×10 8 yuan;In contrast,the GDP increased from 0.931×10 8 yuan to 8.856×10 8 yuan.The values of the I CEE were -1.14,-0.22,and -0.14 in the stages of 1977-1987,1987-2000 and 2000-2004,respectively.The result indicated that during the first stage 1977-1987,the relationship between environment and economy in the QLW was not concordant but at a high conflict;from 1987 to 2004,there was a low conflict between environment and economy,and the CEE appeared to increase slowly.Analysis of the assessment results showed that the national policies and industrial adjustment practice play an important role in the CEE changes.
基金funded by National Science and Technology Support Plan of China (No. 2009BAH50B01-03)National Natural Science Foundation of China (No.41171435)the Major Projects of the National Social Science Foundation of China (No.10zd&051) and Research on Ecotourism Development Planning of Three Rivers Sources Region in Qinghai Province
文摘Qinghai Province is an important component of the Qinghai-Tibet Plateau in China. Scientific evaluation of the suitability of Qinghai's climate for tourism can contribute to overcoming obstacles posed by climate on sustainable tourism development in Qinghai Province, including disparities between the low and high seasons, high altitude health concerns, and weather events. A tourism climate suitability evaluation model of the Qinghai-Tibet Plateau is constructed (Tourism Climate Suitability Index, or TCSI), and tourism climate suitability is comprehensively evaluated for Qinghai Province from climate data from 1960 to 2009. Results show that: (I) There is clear distributional characteristics of spatial-temporal variability of TCSI values in Qinghai Province. (II) Tourism climate suitability in Qinghai Province has significant seasonal and regional differences. The year is divided into a very suitable period (July and August), suitable tourism periods (from April and October), less suitable periods (From Nov to Mar). June to August is the most suitable tourism period in Qinghai. Qinghai Province is divided into five levels of tourism climate suitability: most suitable regions, very suitable regions, suitable regions, less suitable regions, and unsuitable region. (III) The key factor which influences regional differences in tourism climatic suitability is atmospheric oxygen. And the key factors which chiefly influence seasonal differences of tourism climate suitability are temperature and humidity, the wind chill factor, and barrier weather.
