Located on the Qinghai-Xizang Plateau,the Xizang Autonomous Region boasts exceptional solar energy resources.Today,sunlight is being converted into electricity by a 100 megawatt(MW)photovoltaic power station in Chabal...Located on the Qinghai-Xizang Plateau,the Xizang Autonomous Region boasts exceptional solar energy resources.Today,sunlight is being converted into electricity by a 100 megawatt(MW)photovoltaic power station in Chabala Township,Quxu County,Lhasa.Built by Huadian(Quxu)New Energy Co.,Ltd,the project is at an average altitude of 4,000 meters above sea level.It has become a powerful driver of green development in the region,ushering in a new chapter of harmonious coexistence between humanity and nature.展开更多
The Qinghai-Xizang Plateau,known as the Roof of the World and the Water Tower of Asia,is recognized as the Earth’s Third Pole.It functions as a vital ecological security barrier and a strategic resource reserve for C...The Qinghai-Xizang Plateau,known as the Roof of the World and the Water Tower of Asia,is recognized as the Earth’s Third Pole.It functions as a vital ecological security barrier and a strategic resource reserve for China,while also serving as an important conservation area that reflects the unique culture of the Chinese nation.Conducting the Second Comprehensive Scientific Expedition to the Qinghai-Xizang Plateau is essential for understanding valuable insights into scientific protection of the region.展开更多
A gathering was held on December 9,2025,at theTashilhunpo Monastery in Xigaze,southwest China's Xizang Autonomous Region,to commemorate the 30th anniversary of the enthronement of Panchen Erdeni Chos-kyi rGyal-po....A gathering was held on December 9,2025,at theTashilhunpo Monastery in Xigaze,southwest China's Xizang Autonomous Region,to commemorate the 30th anniversary of the enthronement of Panchen Erdeni Chos-kyi rGyal-po.Panchen Rinpoche is a member of the Standing Committee of the National Committee of the Chinese People's Political Consultative Conference and vice president of the Buddhist Association of China.The Tashilhunpo Monastery has been Panchen Rinpoche's traditional seat.展开更多
Vast wilderness meets the horizon;snowy land ascends into douds.The Qinghai-Xizang Plateau,renowned as the"Roof of the World,"cradles numerous historical and cultural treasures in its cold,oxygen-thin wildness.
INTRODUCTION.On January 7,2025,at 9:05 AM BJT,a MS6.8 earthquake(CENC epicenter:28.50°N,87.45°E)struck Dingri County,Xizang Province(hereinafter referred to as the Dingri mainshock).The inferred moment magni...INTRODUCTION.On January 7,2025,at 9:05 AM BJT,a MS6.8 earthquake(CENC epicenter:28.50°N,87.45°E)struck Dingri County,Xizang Province(hereinafter referred to as the Dingri mainshock).The inferred moment magnitude,based on regional/teleseismic waveform inversion and back-projection,is approximately MW7.1.Focal mechanism solutions,aftershock distribution,and field surveys indicate that the Dingri mainshock was a normal-faulting event,with a nearly north-south strike and a westward-dipping fault plane.展开更多
0 INTRODUCTION.According to the China Earthquake Networks Center,an M6.8 earthquake struck Dingri County,Xizang Autonomous Region,China,on 7 January 2025 at 9:05 a.m.local time.The epicenter is located at 28.5°N,...0 INTRODUCTION.According to the China Earthquake Networks Center,an M6.8 earthquake struck Dingri County,Xizang Autonomous Region,China,on 7 January 2025 at 9:05 a.m.local time.The epicenter is located at 28.5°N,87.45°E,with a depth of~10 km.展开更多
Acute mountain sickness(AMS) is an illness caused by hypoxia due to rapid ascent to altitudes above 2,500 m. Symptoms include headache,nausea, vomiting, and loss of appetite, all of which usually improve within 1 to 2...Acute mountain sickness(AMS) is an illness caused by hypoxia due to rapid ascent to altitudes above 2,500 m. Symptoms include headache,nausea, vomiting, and loss of appetite, all of which usually improve within 1 to 2 days. However,untreated AMS can progress to life-threatening conditions such as high-altitude cerebral and pulmonary edema(HACE and HAPE, respectively)^([1]).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
In this study,we developed a high-resolution(3 arcsec,approximately 90 m)V_(S30) map and associated open-access dataset for the 140 km×200 km region affected by the January 2025 M6.8 Dingri Xizang,China earthquak...In this study,we developed a high-resolution(3 arcsec,approximately 90 m)V_(S30) map and associated open-access dataset for the 140 km×200 km region affected by the January 2025 M6.8 Dingri Xizang,China earthquake.This map provides a significantly finer resolution compared to existing V_(S30) maps,which typically use a 30 arcsec grid.The V_(S30) values were estimated using the Cokriging-based V_(S30) proxy model(SCK model),which integrates V_(S30) measurements as primary constraints and utilizes topographic slope as a secondary parameter.The findings indicate that the V_(S30) values range from 200 to 250 m/s in the sedimentary deposit areas near the earthquake’s epicenter and from 400 to 600 m/s in the surrounding mountainous regions.This study showcases the capability of the SCK model to efficiently generate V_(S30) estimations across various spatial resolutions and demonstrates its effectiveness in producing reliable estimations in data-sparse regions.展开更多
Some of my Tibetan friends joke that the reason I don’t get altitude sickness,even at elevations around 5,000 meters,is because,in my previous life,I was Tibetan.
It has long been recognized that garnet has the capacity to preserve the trace element and isotopic signature of distinct metamorphic growth zones because of its high closure temperature.Combined with the large size o...It has long been recognized that garnet has the capacity to preserve the trace element and isotopic signature of distinct metamorphic growth zones because of its high closure temperature.Combined with the large size of certain garnet porphyroblast,this allows investigating variations in metamorphic conditions such as pressure,temperature,deviatoric stress,and fluid composition,which occur during subduction-related metamorphism.Here,one garnet porphyroblast of 6 cm diameter was sampled from the Yardoi schists of Xizang,and the major-,trace-,and Li-Mg isotopic compositions of distinct growth zones were determined in situ.The δ^(7)Li values range from+6.0‰to+4.1‰and follow‘S-shaped’patterns on both sides of the garnet’s core,revealing a two-stage growth process corresponding to the fluid-assisted sequential recrystallization of chlorite and micas during prograde metamorphism.By contrast,once corrected for the overprinting by retrograde metamorphism,theδ^(26)Mg values vary monotonically from−1.73‰in the core to−1.32‰in the outer rim,reflecting a single-step process interpreted to result from increasing temperature and the solid-state recrystallization of chlorite-biotite during prograde metamorphism.This different behavior of Li and Mg isotopes is interpreted to result from the fact that Li is more fluid-mobile than the major element Mg.展开更多
The giant Jiama deposit is a post-collisional porphyry Cu-polymetallic system located in the Gangdese metallogenic belt of Xizang.It consists of three deposits:The Main deposit,the Zegulangbei deposit,and the South Pi...The giant Jiama deposit is a post-collisional porphyry Cu-polymetallic system located in the Gangdese metallogenic belt of Xizang.It consists of three deposits:The Main deposit,the Zegulangbei deposit,and the South Pit deposit according to exploration and research.The South Pit deposit is a high-grade Cu-Pb-Zn deposit,but its genesis is unclear.To investigate its genesis,a detailed study was conducted on the deposit geology,geochronology and amphibole geochemistry.The results indicate that the weighted average 206Pb/238U age of the zircons from the granite porphyry in the South Pit is 15.38±0.45 Ma,and the molybdenite from the mineralized skarn yield a ReOs isochron age of 15.23±0.22 Ma,in line with the age of the Main deposit(15.7-14.3 Ma).The amphiboles in the granite porphyry of the South Pit,magnesiohornblende and actinolite,are high in Mg and Ca and low in K.They crystallized at temperatures of 705-7490C,pressures of 0.44-0.67 kbar,oxygen fugacity of-14.31--13.69(NNO),and depths of 1.7-2.5 km.Mapping of structure and alteration indicates that the South Pit skarn developed due to the metasomatism of marble of hornfels or carbonate in fold hinge dilation and an interlayer detachment zone by magmatic hydrothermal fluids.According to the age of magmatism and geological features,the South Pit deposit and the Main deposit have originated from the same Miocene magmatism,but the South Pit deposit was affected by the gliding nappe tectonic system.The amphibole geochemistry indicates that the ore-related magma of the South Pit has a high oxygen fugacity and is rich in water.展开更多
In the early years of the 20th century,Britain sought to compete with Russia for dominance in East Asia,and set its sights on the strategic location of Xizang.Smallpox virus epidemics have been documented in Xizang si...In the early years of the 20th century,Britain sought to compete with Russia for dominance in East Asia,and set its sights on the strategic location of Xizang.Smallpox virus epidemics have been documented in Xizang since the 7th century,and smallpox remained a major public health issue in Xizang until the early 20th century.The British colonizers learned from their experience of passing on biological science and technology in India and carried out a series of medical activities in Xizang,the most influential of which was the smallpox vaccination for the people of Gyantse and other places.This paper examines the history of the fight against smallpox in Xizang from 1900 to 1907,and studies the historical process of British colonial expansion in Xizang,as well as the interaction between the Qing government and the British invaders in medical and healthcare events such as vaccination in Xizang.展开更多
On March 28,the white paper“Human Rights in Xizang in the New Era”was released.The white paper provides a comprehensive and systematic account of the remarkable achievements made in Xizang's human rights cause u...On March 28,the white paper“Human Rights in Xizang in the New Era”was released.The white paper provides a comprehensive and systematic account of the remarkable achievements made in Xizang's human rights cause under the leadership of the CPC's(Communist Party of China)strategy for governing Xizang in the new era,showcasing the development and progress of human rights in Xizang.展开更多
A halophilic bacterium,named Halomonas sp.NEC-1 was isolated from the Nyer Co Salt Lake on the Xizang Plateau,SW China.The strain exhibited a broad pH tolerance range of 5-11,distinguishing it from Halomonas alkaliphi...A halophilic bacterium,named Halomonas sp.NEC-1 was isolated from the Nyer Co Salt Lake on the Xizang Plateau,SW China.The strain exhibited a broad pH tolerance range of 5-11,distinguishing it from Halomonas alkaliphila despite a 99% genetic similarity.Optimal growth conditions,determined through orthogonal experiments,were found to be 37℃,100-g/L salinity,and an initial pH of 6,resulting in a maximum OD_(600) of 7.98±0.06.Halomonas sp.NEC-1 produced 545.43±25.10 mg/L of ectoine under optimal conditions of 75-g/L salinity,40-g/L sodium glutamate,and an initial pH of 6.This production increased to 1388.81±3.69 mg/L after five rounds of hypo-osmotic shocks.During the shocks,ectoine productivity remained stable at approximately 16.29±0.04 to 17.28±0.48 mg/(L·h),representing a 43.40%-52.11% increase compared to the rate without any shock(11.36±1.05 mg/(L·h)).Additionally,the expression of the ectABC gene cluster,related to ectoine synthesis,significantly increased following the shocks,enhancing ectoine production.The ectoine extract demonstrated notable protective effects on Escherichia coli and plasmid DNA.After 10 min of exposure at 60℃,the colony count of E.coli treated with ectoine extract increased by 342% compared to treatment with distilled water.Furthermore,the ectoine extract protected plasmid DNA from 2,2′-Azobis(2-methylpropionamidine)dihydrochloride-induced damage.This study highlights Halomonas sp.NEC-1 is a promising strain for ectoine production and underscores the potential of microbial resources in salt lakes from Xizang region.展开更多
Erratumto:Journal of Earth Science https://doi.org/10.1007/s12583-023-1946-6 The original version of this article unfortunately contained three mistakes.1.The presentation of Equation(4)was incorrect.The corrected one...Erratumto:Journal of Earth Science https://doi.org/10.1007/s12583-023-1946-6 The original version of this article unfortunately contained three mistakes.1.The presentation of Equation(4)was incorrect.The corrected one is given below.展开更多
The Surface Water and Ocean Topography(SWOT)mission represents a collaborative effort between physical oceanography and hydrology fields,aimed at exchanging detailed topography information characterized by its high pr...The Surface Water and Ocean Topography(SWOT)mission represents a collaborative effort between physical oceanography and hydrology fields,aimed at exchanging detailed topography information characterized by its high precision in vertical measurements and extensive spatial detail.This data is generated by a scientific payload,with the Ka-band radar Interferometer(KaRin)serving as its primary tool.However,its smaller incidence angle increases layover regions,introducing noise during observations.Focused on four rugged high-altitude Xizang Plateau regions,this study evaluates the simulation of areas that are not affected by the Synthetic Aperture Radar(SAR)side-looking mode,using simulated SWOT orbit parameters and Digital Elevation Model(DEM)data derived from Shuttle Radar Topography Mission(SRTM).The results show that the imaging mode of KaRIn induces layover in terrain with significant variations,challenging precise topography retrieval.Utilizing the left and right swaths of swOT could enhance the observations along the east and west axis,suggesting multiple observations are necessary for the accuracy of surface terrain.The detection results of the lake mask show that KaRIn is adept at monitoring lakes,though their boundaries could be affected by adjacent riverbanks and nearby mountainous landscapes.The importance of mitigating layover impact cannot be overstated for heightened precision and expanded applications,thereby raising the significance of sWOT in environmental and scientific studies.展开更多
Fresh fish was the best-selling product in Xitun Supermarket in Nyingchi City,the Xizang Autonomous Region,in the second half of 2024."They were really fresh and usually sold out within half an hour,"He Mei,...Fresh fish was the best-selling product in Xitun Supermarket in Nyingchi City,the Xizang Autonomous Region,in the second half of 2024."They were really fresh and usually sold out within half an hour,"He Mei,manager of the supermarket,said.The fish were raised by a local aquaculture farm,Nyingchi Statefarm Karma Agriculture Co.Ltd.(NSKA).展开更多
Editor's Note:The“two ssions”,the annual ssions of China's national lgislature and political advisory body,kicked of in early March in Beiing.As a highly anticipated event on the country's political cale...Editor's Note:The“two ssions”,the annual ssions of China's national lgislature and political advisory body,kicked of in early March in Beiing.As a highly anticipated event on the country's political calendar,it attracted both domestic and international attentions,ofering a critical window for the world at large into China's achievements in 2024 and is roadmap towards high-quality development and Chinese modernization in 2025-the final year of China's 14th Five Year Plan(2021-2025).展开更多
Cultural relics are carriers of history,preserving the shared historical origins of the Chinese nation.On the Qinghai-Xizang Plateau,there have been generations of guardians safeguarding the local civillizations.Their...Cultural relics are carriers of history,preserving the shared historical origins of the Chinese nation.On the Qinghai-Xizang Plateau,there have been generations of guardians safeguarding the local civillizations.Their work has been arduous,yet it has never halted.These guardians of cultural relics have made selfless sacrifices for the protection of cultural heritage,allowing us to appreciate in present days the ancient achievements and glory of Chinese civilization.They deserve to be further seen,understood,and supported!展开更多
文摘Located on the Qinghai-Xizang Plateau,the Xizang Autonomous Region boasts exceptional solar energy resources.Today,sunlight is being converted into electricity by a 100 megawatt(MW)photovoltaic power station in Chabala Township,Quxu County,Lhasa.Built by Huadian(Quxu)New Energy Co.,Ltd,the project is at an average altitude of 4,000 meters above sea level.It has become a powerful driver of green development in the region,ushering in a new chapter of harmonious coexistence between humanity and nature.
文摘The Qinghai-Xizang Plateau,known as the Roof of the World and the Water Tower of Asia,is recognized as the Earth’s Third Pole.It functions as a vital ecological security barrier and a strategic resource reserve for China,while also serving as an important conservation area that reflects the unique culture of the Chinese nation.Conducting the Second Comprehensive Scientific Expedition to the Qinghai-Xizang Plateau is essential for understanding valuable insights into scientific protection of the region.
文摘A gathering was held on December 9,2025,at theTashilhunpo Monastery in Xigaze,southwest China's Xizang Autonomous Region,to commemorate the 30th anniversary of the enthronement of Panchen Erdeni Chos-kyi rGyal-po.Panchen Rinpoche is a member of the Standing Committee of the National Committee of the Chinese People's Political Consultative Conference and vice president of the Buddhist Association of China.The Tashilhunpo Monastery has been Panchen Rinpoche's traditional seat.
文摘Vast wilderness meets the horizon;snowy land ascends into douds.The Qinghai-Xizang Plateau,renowned as the"Roof of the World,"cradles numerous historical and cultural treasures in its cold,oxygen-thin wildness.
基金supported by the“CUG Scholar”Scientific Research Funds at China University of Geosciences(Wuhan)(No.2021230)supported by the National Natural Science Foundation of China(Nos.41922025,42204062)。
文摘INTRODUCTION.On January 7,2025,at 9:05 AM BJT,a MS6.8 earthquake(CENC epicenter:28.50°N,87.45°E)struck Dingri County,Xizang Province(hereinafter referred to as the Dingri mainshock).The inferred moment magnitude,based on regional/teleseismic waveform inversion and back-projection,is approximately MW7.1.Focal mechanism solutions,aftershock distribution,and field surveys indicate that the Dingri mainshock was a normal-faulting event,with a nearly north-south strike and a westward-dipping fault plane.
基金funded by the National Key R&D Program of China(No.2020YFC150071)partly supported by the Shaanxi Province Geoscience Big Data and Geohazard Prevention Innovation Team(2022)and the Research Funds for the Interdisciplinary Projects,CHU(No.300104240914)。
文摘0 INTRODUCTION.According to the China Earthquake Networks Center,an M6.8 earthquake struck Dingri County,Xizang Autonomous Region,China,on 7 January 2025 at 9:05 a.m.local time.The epicenter is located at 28.5°N,87.45°E,with a depth of~10 km.
文摘Acute mountain sickness(AMS) is an illness caused by hypoxia due to rapid ascent to altitudes above 2,500 m. Symptoms include headache,nausea, vomiting, and loss of appetite, all of which usually improve within 1 to 2 days. However,untreated AMS can progress to life-threatening conditions such as high-altitude cerebral and pulmonary edema(HACE and HAPE, respectively)^([1]).
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supported by the National Natural Science Foundation of China(No.42120104002).
文摘In this study,we developed a high-resolution(3 arcsec,approximately 90 m)V_(S30) map and associated open-access dataset for the 140 km×200 km region affected by the January 2025 M6.8 Dingri Xizang,China earthquake.This map provides a significantly finer resolution compared to existing V_(S30) maps,which typically use a 30 arcsec grid.The V_(S30) values were estimated using the Cokriging-based V_(S30) proxy model(SCK model),which integrates V_(S30) measurements as primary constraints and utilizes topographic slope as a secondary parameter.The findings indicate that the V_(S30) values range from 200 to 250 m/s in the sedimentary deposit areas near the earthquake’s epicenter and from 400 to 600 m/s in the surrounding mountainous regions.This study showcases the capability of the SCK model to efficiently generate V_(S30) estimations across various spatial resolutions and demonstrates its effectiveness in producing reliable estimations in data-sparse regions.
文摘Some of my Tibetan friends joke that the reason I don’t get altitude sickness,even at elevations around 5,000 meters,is because,in my previous life,I was Tibetan.
基金supported by the National Natural Science Foundation of China(Nos.41729001,42073003,41673031).
文摘It has long been recognized that garnet has the capacity to preserve the trace element and isotopic signature of distinct metamorphic growth zones because of its high closure temperature.Combined with the large size of certain garnet porphyroblast,this allows investigating variations in metamorphic conditions such as pressure,temperature,deviatoric stress,and fluid composition,which occur during subduction-related metamorphism.Here,one garnet porphyroblast of 6 cm diameter was sampled from the Yardoi schists of Xizang,and the major-,trace-,and Li-Mg isotopic compositions of distinct growth zones were determined in situ.The δ^(7)Li values range from+6.0‰to+4.1‰and follow‘S-shaped’patterns on both sides of the garnet’s core,revealing a two-stage growth process corresponding to the fluid-assisted sequential recrystallization of chlorite and micas during prograde metamorphism.By contrast,once corrected for the overprinting by retrograde metamorphism,theδ^(26)Mg values vary monotonically from−1.73‰in the core to−1.32‰in the outer rim,reflecting a single-step process interpreted to result from increasing temperature and the solid-state recrystallization of chlorite-biotite during prograde metamorphism.This different behavior of Li and Mg isotopes is interpreted to result from the fact that Li is more fluid-mobile than the major element Mg.
基金supported by the National Key Research and Development Program of China(No.2022YFC2905004)Open Fund from Sino Probe Laboratory(No.SL202405)+4 种基金the Basic Research Fund of Institute of mineral Resource,Chinese Academy of Geological Sciences(No.JKYZD202316)the National Natural Science Foundation of China(Nos.42272093,42230813)China Scholarship Council Project,and the Geological Survey Project(No.DD20230054)Science and Technology Support Project in a new round of prospecting breakthrough strategic action(No.ZKKJ202429)the Central Government Guided Local Scientific and Technological Development Funding Project(No.XZ202401YD0006)。
文摘The giant Jiama deposit is a post-collisional porphyry Cu-polymetallic system located in the Gangdese metallogenic belt of Xizang.It consists of three deposits:The Main deposit,the Zegulangbei deposit,and the South Pit deposit according to exploration and research.The South Pit deposit is a high-grade Cu-Pb-Zn deposit,but its genesis is unclear.To investigate its genesis,a detailed study was conducted on the deposit geology,geochronology and amphibole geochemistry.The results indicate that the weighted average 206Pb/238U age of the zircons from the granite porphyry in the South Pit is 15.38±0.45 Ma,and the molybdenite from the mineralized skarn yield a ReOs isochron age of 15.23±0.22 Ma,in line with the age of the Main deposit(15.7-14.3 Ma).The amphiboles in the granite porphyry of the South Pit,magnesiohornblende and actinolite,are high in Mg and Ca and low in K.They crystallized at temperatures of 705-7490C,pressures of 0.44-0.67 kbar,oxygen fugacity of-14.31--13.69(NNO),and depths of 1.7-2.5 km.Mapping of structure and alteration indicates that the South Pit skarn developed due to the metasomatism of marble of hornfels or carbonate in fold hinge dilation and an interlayer detachment zone by magmatic hydrothermal fluids.According to the age of magmatism and geological features,the South Pit deposit and the Main deposit have originated from the same Miocene magmatism,but the South Pit deposit was affected by the gliding nappe tectonic system.The amphibole geochemistry indicates that the ore-related magma of the South Pit has a high oxygen fugacity and is rich in water.
文摘In the early years of the 20th century,Britain sought to compete with Russia for dominance in East Asia,and set its sights on the strategic location of Xizang.Smallpox virus epidemics have been documented in Xizang since the 7th century,and smallpox remained a major public health issue in Xizang until the early 20th century.The British colonizers learned from their experience of passing on biological science and technology in India and carried out a series of medical activities in Xizang,the most influential of which was the smallpox vaccination for the people of Gyantse and other places.This paper examines the history of the fight against smallpox in Xizang from 1900 to 1907,and studies the historical process of British colonial expansion in Xizang,as well as the interaction between the Qing government and the British invaders in medical and healthcare events such as vaccination in Xizang.
文摘On March 28,the white paper“Human Rights in Xizang in the New Era”was released.The white paper provides a comprehensive and systematic account of the remarkable achievements made in Xizang's human rights cause under the leadership of the CPC's(Communist Party of China)strategy for governing Xizang in the new era,showcasing the development and progress of human rights in Xizang.
基金Supported by the Key Science and Technology Program of Xizang Autonomous Region(No.XZ202301ZY0012N)the Key Fisheries Resources and Environmental Survey Project in the Southwest Region(No.CJW2023034)the National Natural Science Foundation of China(No.42306106)。
文摘A halophilic bacterium,named Halomonas sp.NEC-1 was isolated from the Nyer Co Salt Lake on the Xizang Plateau,SW China.The strain exhibited a broad pH tolerance range of 5-11,distinguishing it from Halomonas alkaliphila despite a 99% genetic similarity.Optimal growth conditions,determined through orthogonal experiments,were found to be 37℃,100-g/L salinity,and an initial pH of 6,resulting in a maximum OD_(600) of 7.98±0.06.Halomonas sp.NEC-1 produced 545.43±25.10 mg/L of ectoine under optimal conditions of 75-g/L salinity,40-g/L sodium glutamate,and an initial pH of 6.This production increased to 1388.81±3.69 mg/L after five rounds of hypo-osmotic shocks.During the shocks,ectoine productivity remained stable at approximately 16.29±0.04 to 17.28±0.48 mg/(L·h),representing a 43.40%-52.11% increase compared to the rate without any shock(11.36±1.05 mg/(L·h)).Additionally,the expression of the ectABC gene cluster,related to ectoine synthesis,significantly increased following the shocks,enhancing ectoine production.The ectoine extract demonstrated notable protective effects on Escherichia coli and plasmid DNA.After 10 min of exposure at 60℃,the colony count of E.coli treated with ectoine extract increased by 342% compared to treatment with distilled water.Furthermore,the ectoine extract protected plasmid DNA from 2,2′-Azobis(2-methylpropionamidine)dihydrochloride-induced damage.This study highlights Halomonas sp.NEC-1 is a promising strain for ectoine production and underscores the potential of microbial resources in salt lakes from Xizang region.
文摘Erratumto:Journal of Earth Science https://doi.org/10.1007/s12583-023-1946-6 The original version of this article unfortunately contained three mistakes.1.The presentation of Equation(4)was incorrect.The corrected one is given below.
基金supported by the National Natural Science Foundation of China(grant nos.42274028 and 41704023).
文摘The Surface Water and Ocean Topography(SWOT)mission represents a collaborative effort between physical oceanography and hydrology fields,aimed at exchanging detailed topography information characterized by its high precision in vertical measurements and extensive spatial detail.This data is generated by a scientific payload,with the Ka-band radar Interferometer(KaRin)serving as its primary tool.However,its smaller incidence angle increases layover regions,introducing noise during observations.Focused on four rugged high-altitude Xizang Plateau regions,this study evaluates the simulation of areas that are not affected by the Synthetic Aperture Radar(SAR)side-looking mode,using simulated SWOT orbit parameters and Digital Elevation Model(DEM)data derived from Shuttle Radar Topography Mission(SRTM).The results show that the imaging mode of KaRIn induces layover in terrain with significant variations,challenging precise topography retrieval.Utilizing the left and right swaths of swOT could enhance the observations along the east and west axis,suggesting multiple observations are necessary for the accuracy of surface terrain.The detection results of the lake mask show that KaRIn is adept at monitoring lakes,though their boundaries could be affected by adjacent riverbanks and nearby mountainous landscapes.The importance of mitigating layover impact cannot be overstated for heightened precision and expanded applications,thereby raising the significance of sWOT in environmental and scientific studies.
文摘Fresh fish was the best-selling product in Xitun Supermarket in Nyingchi City,the Xizang Autonomous Region,in the second half of 2024."They were really fresh and usually sold out within half an hour,"He Mei,manager of the supermarket,said.The fish were raised by a local aquaculture farm,Nyingchi Statefarm Karma Agriculture Co.Ltd.(NSKA).
文摘Editor's Note:The“two ssions”,the annual ssions of China's national lgislature and political advisory body,kicked of in early March in Beiing.As a highly anticipated event on the country's political calendar,it attracted both domestic and international attentions,ofering a critical window for the world at large into China's achievements in 2024 and is roadmap towards high-quality development and Chinese modernization in 2025-the final year of China's 14th Five Year Plan(2021-2025).
文摘Cultural relics are carriers of history,preserving the shared historical origins of the Chinese nation.On the Qinghai-Xizang Plateau,there have been generations of guardians safeguarding the local civillizations.Their work has been arduous,yet it has never halted.These guardians of cultural relics have made selfless sacrifices for the protection of cultural heritage,allowing us to appreciate in present days the ancient achievements and glory of Chinese civilization.They deserve to be further seen,understood,and supported!
