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Evaluation of ontological value of regional tourism resources:A case study of Hainan Island,China 被引量:4
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作者 ZHANG Tongyan WANG Yingjie +2 位作者 ZHANG Shengrui WANG Yingying YU Hu 《Journal of Geographical Sciences》 SCIE CSCD 2021年第7期1015-1038,共24页
Evaluation of tourism resources is necessary for tourism regionalization and planning and for the development of tourism destinations.Furthermore,the scientific evaluation of the status of existing tourism resources i... Evaluation of tourism resources is necessary for tourism regionalization and planning and for the development of tourism destinations.Furthermore,the scientific evaluation of the status of existing tourism resources is important for optimally combining and rationally developing regional tourism resources.In this study,a conceptual model for estimating the ontological value of tourism resources was developed and an evaluation indicator system was designed for the ontological value.On the basis of the quantitative and spatial characteristics of regional tourism resources,six indicators were constructed:quantitative density,richness,dominance,combination,aggregation,and accessibility.Furthermore,spatial differentiation characteristics of the ontological value indicators of county-level tourism resources on Hainan Island were analyzed,and the ontological value of the tourism resources was comprehensively evaluated and ranked by using a fuzzy clustering evaluation method.Finally,the evaluation results were verified on the basis of the quantity,quality,and accessibility of regional tourism resources by using an expert scoring method.The results showed that the test results were consistent with the inferences drawn from the ontological value,indicating that the evaluation indicator system is scientific and reliable and that it is an effective alternative to existing evaluation indexes of regional tourism resources,which are inconsistent.The fuzzy clustering evaluation method overcomes the subjectivity in the evaluation process and is practical for the quantitative evaluation of regional tourism resources.The evaluation indicator system for regional tourism resources designed in this study can provide a reference for the evaluation of the tourism resource development value on a regional scale,and the evaluation results can facilitate informed policymaking for the rational development of regional tourism resources. 展开更多
关键词 ontological value indicator system evaluation of regional tourism resources Hainan Island China
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Emission inventory evaluation using observations of regional atmospheric background stations of China 被引量:7
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作者 Xingqin An Zhaobin Sun +2 位作者 Weili Lin Min Jin Nan Li 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2013年第3期537-546,共10页
Any accurate simulation of regional air quality by numerical models entails accurate and up-to-date emissions data for that region.The INTEX-B2006 (I06),one of the newest emission inventories recently popularly used... Any accurate simulation of regional air quality by numerical models entails accurate and up-to-date emissions data for that region.The INTEX-B2006 (I06),one of the newest emission inventories recently popularly used in China and East Asia,has been assessed using the Community Multiscale Air Quality model and observations from regional atmospheric background stations of China.Comparisons of the model results with the observations for the species SO2,NO 2,O 3 and CO from the three regional atmospheric background stations of Shangdianzi,Longfengshan and Linan show that the model can basically capture the temporal characteristics of observations such as the monthly,seasonal and diurnal variance trends.Compared to the other three species,the simulated CO values were grossly underestimated by about two-third or one-half of the observed values,related to the uncertainty in CO emissions.Compared to the other two stations,Shangdianzi had poorer simulations,especially for SO2 and CO,which partly resulted from the site location close to local emission sources from the Beijing area;and the regional inventory used was not capable of capturing the influencing factors of strong regional sources on stations.Generally,the fact that summer gave poor simulation,especially for SO2 and O 3,might partly relate to poor simulations of meteorological fields such as temperature and wind. 展开更多
关键词 evaluation CMAQ model INTEX-B2006 inventory regional atmospheric background stations
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Research on the Regional Ecological Environment Evaluation and Application under the Influence of the Severe Earthquake Disaster
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作者 FU Fei YANG Qiaoyan ZHANG Shuaijun 《Journal of Landscape Research》 2014年第6期29-33,38,共6页
To conduct the ecological restoration and reconstruction of disaster areas after the severe earthquake, such as Wenchuan Earthquake and Lushan Earthquake, this article uses region al ecological environment evaluation ... To conduct the ecological restoration and reconstruction of disaster areas after the severe earthquake, such as Wenchuan Earthquake and Lushan Earthquake, this article uses region al ecological environment evaluation and ecological footprint to construct a quantitative analysis model on the basis of ecololgical environment indexes in Mianzhu City. Through this model, resource status of the regional environment in Mianzhu is analyzed, as well as the ecological capacity and the ecological security. Based on the evaluation and analysis, this paper provides multi-path development strategies of ecological restoration and sustainable development of human settlements after the earthquake. 展开更多
关键词 Severe earthquake disaster Regional ecological environment evaluation Ecological footprint Ecological pressure and sustainable development of human settlements Ecological construction strategy
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RESEARCH ON THE THEORY AND METHODS OF COMPREHENSIVE EVALUATION OF REGIONAL COAL RESOURCES
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《石家庄经济学院学报》 1995年第S1期99-105,共7页
consists of forecasting for the total reserves of regional mineral resources and evaluation,compreIn general,based on evaluated objects and factors involved,evaluation of mineral resources hensive evaluation of region... consists of forecasting for the total reserves of regional mineral resources and evaluation,compreIn general,based on evaluated objects and factors involved,evaluation of mineral resources hensive evaluation of regional mineral resources, and economic and technical evaluation of deposits. Here a region can be a country, a province, or a mining area, while a deposit is mainly related to a single type of mineral, although it can contain more than one types of minerals. In the past, to assess mineral resources was primarily to evaluate and forecast the total reserves of regional mineral resources. With the advancement of science, technology, and economy, the evaluation of mineral resources has developed from forecasting the reserves of them to comprehensively evaluating them on the basis of numerous factors. 展开更多
关键词 RESEARCH ON THE THEORY AND METHODS OF COMPREHENSIVE evaluation OF REGIONAL COAL RESOURCES
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The features of Karstic water and the evaluation of groundwater resources in Sanglin spring region
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《Global Geology》 1998年第1期76-77,共2页
关键词 The features of Karstic water and the evaluation of groundwater resources in Sanglin spring region
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Modeling the regional grazing impact on vegetation carbon sequestration ability in Temperate Eurasian Steppe 被引量:2
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作者 CHEN Yi-zhao SUN Zheng-guo +4 位作者 QIN Zhi-hao Pavel Propastin WANG Wei LI Jian-long RUANHong-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2017年第10期2323-2336,共14页
Anthropogenic activities profoundly influence carbon sequestration in the Eurasian Steppe. In particular, grazing has been identified as having a major effect on carbon sequestration. However, the extent to which graz... Anthropogenic activities profoundly influence carbon sequestration in the Eurasian Steppe. In particular, grazing has been identified as having a major effect on carbon sequestration. However, the extent to which grazing affects regional patterns or carbon sequestration is unknown. In this study, we evaluated the impact of regional grazing on grassland carbon seques- tration using the Boreal Ecosystem Productivity Simulator (BEPS) and the Shiyomi grazing model. Model performances were validated against the results from field measurements and eddy covariance (EC) sites. Model outputs showed that in 2008, the regional net primary productivity (NPP) was 79.5 g C m-2, and the net ecosystem productivity (NEP) was -6.5 g C m-2, characterizing the region as a Weak carbon source. The Mongol Steppe (MS) was identified as a carbon sink, whereas the Kazakh Steppe (KS) was either carbon neutral or a weak carbon source. The spatial patterns of grazing density are divergent between the MS and the KS. in the MS, livestock was mainly distributed in China with relatively good management, while in the KS livestock was mainly concentrated in the southern countries (especially Uzbekistan and Turkmenistan) with harsh environments and poor management. The consumption percentages of NPP in Turkmenistan, Tajikistan and Uzbekistan were 5.3, 3.3 and 1.2%, respectively, whereas the percentages in other countries were lower than 1%. Correspondingly, grazing consumption contributed to the carbon sources of Turkmenistan, Tajikistan and Uzbekistan by 11.6, 6.3 and 4.3%, respectively, while it weakened the carbon sink in Inner Mongolia, China and Mongolia by 1.6 and 0.5%. This regional pattern should be affected by different sub-regional characteristics, e.g., the continuous degradation of grassland in the southern part of the KS and the restoration of grassland in Inner Mongolia, China. 展开更多
关键词 Temperate Eurasian Steppe terrestrial modeling carbon sequestration ability grazing activity regional evaluation
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Susceptibility-weighted imaging is suitable for evaluating signal strength in different brain regions of a rabbit model of acute hemorrhagic anemia 被引量:2
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作者 Jun Xia Ni Xie +3 位作者 Anyu Yin Guozhao Teng Fan Lin Yi Lei 《Neural Regeneration Research》 SCIE CAS CSCD 2014年第9期990-992,共3页
Acute hemorrhagic anemia can decrease blood flow and oxygen supply to brain, and affect its physiological function. While detecting changes in brain function in patients with acute hemorrhagic anemia is helpful for pr... Acute hemorrhagic anemia can decrease blood flow and oxygen supply to brain, and affect its physiological function. While detecting changes in brain function in patients with acute hemorrhagic anemia is helpful for preventing neurological complications and evaluating therapeutic effects, clinical changes in the nervous systems of these patients have not received much attention. In part, this is because current techniques can only indirectly detect changes in brain function following onset of anemia, which leads to lags between real changes in brain function and their detection. 展开更多
关键词 Susceptibility-weighted imaging is suitable for evaluating signal strength in different brain regions of a rabbit model of acute hemorrhagic anemia Figure
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Application of a Method for Calculating the Organic Carbon Content by Well Logs to Faulted Basins
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作者 SunJianping LiuLuofu +2 位作者 PangXiongqi GongGuangsheng LiFengjun 《Petroleum Science》 SCIE CAS CSCD 2005年第2期76-81,共6页
The source rock model used in this project was developed by French Petroleum Research Institute. The total organic carbon content was estimated primarily and directly by using continuous conventional logging curves (s... The source rock model used in this project was developed by French Petroleum Research Institute. The total organic carbon content was estimated primarily and directly by using continuous conventional logging curves (such as sonic and resistivity curves), which are calibrated through the laboratory analysis data of organic carbon of cores, cuttings or sidewall cores. Regional evaluations have been carried out in downwarping basins abroad. The Haila′er Basin is a faulted basin and the evaluation of such a basin is a new subject. On the basis of a regional evaluation method for the downwarping basins, a new method suitable to faulted basins was developed. The effect is satisfactory when this new method is applied to the Wu′erxun Sag and the Bei′er Sag. 展开更多
关键词 Haila′er Basin Wu′erxun and Bei′er sags well logs organic carbon content regional evaluation contour maps
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A Multi-Regional Epidemiological Evaluation on Post-vaccination Serological Testing in Prevention of Vertical Transmission of Hepatitis B Virus—10 Counties,5 Provinces,China,2019–2024
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作者 Lin Tang Lun Li +11 位作者 Lifang Huang Jing An Yang Zhou Yi Liu Xiaoxue Liu Qianqian Liu Xiaoqi Wang Siyu Liu Hong Yang Ning Wen Zundong Yin Fuzhen Wang 《China CDC weekly》 2025年第19期658-664,I0009,I0010,共9页
Introduction:Infants born to HBsAg-positive mothers are exposed to hepatitis B virus(HBV)during childbirth and require timely hepatitis B vaccination(HepB)and hepatitis B immunoglobulin(HBIG)to prevent vertical transm... Introduction:Infants born to HBsAg-positive mothers are exposed to hepatitis B virus(HBV)during childbirth and require timely hepatitis B vaccination(HepB)and hepatitis B immunoglobulin(HBIG)to prevent vertical transmission.Post-vaccination serological testing(PVST)determines whether HBVexposed infants are protected,infected,or need revaccination.This study evaluated PVST implementation among HBV-exposed infants and the effectiveness of the recommended strategy to prevent mother-to-child transmission(MTCT)of HBV.Methods:This observational study of infants born to HBsAg-positive mothers evaluated implementation of the MTCT prevention strategy and PVST follow-up across five provinces in China.Chi-square tests assessed timely HepB1 and HBIG administration and HepB series completion.PVST was used to evaluate MTCT prevention effectiveness.Bivariate analyses explored factors influencing infection and protection rates among HBV-exposed infants.Results:Among 7,425 infants born to HBsAgpositive mothers,94.8%received timely HepB1 and HBIG,and 99.5%completed the full HepB vaccination series.PVST was conducted in 3,243(43.7%)infants;the median interval between HepB3 and PVST was 66 days(interquartile range:47–114).26(0.8%)infants tested HBsAg-positive;3,147(97.0%)developed protective antibody levels;and 72(2.2%)were neither infected nor protected,requiring revaccination.Maternal HBeAg positivity was a significant risk factor for MTCT prevention failure[adjusted odds ratio(aOR)=12.7,95%confidence interval(CI):4.7,34.1].Conclusions:The MTCT prevention strategy was highly effective.PVST for infants born to HBsAgpositive mothers enables evaluation of MTCT prevention strategies and improvement of strategy their effectiveness.PVST utilization should be expanded to test all HBV-exposed infants to ensure their protection and to further enhance the MTCT prevention. 展开更多
关键词 multi regional epidemiological evaluation hepatitis b immunoglobulin hbig vertical transmission hepatitis b PREVENTION hepatitis B virus infants China
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Validation of Monthly Data of Temperature and Precipitation over West Africa from Simulations of CORDEX-CORE Ensemble
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作者 Alphonse Um Um Cyrille Meukaleuni +5 位作者 Eric Efon Brice Baudouin Sandjeu Wandjie Rinelle Djiondo Ngongang Alain Tchio Tamoffo Carine Betant Andre Lenouo 《Journal of Geoscience and Environment Protection》 2025年第1期422-443,共22页
We analysed nine simulations from dynamic downscaling to a horizontal resolution of approximately 25 km of three general circulation models (GCMs). These GCMs use three regional climate models (RCMs) that participated... We analysed nine simulations from dynamic downscaling to a horizontal resolution of approximately 25 km of three general circulation models (GCMs). These GCMs use three regional climate models (RCMs) that participated in the coordinated downscaling experiment (CORDEX-CORE). These simulations were compared to three datasets of reanalysis. The ERA5 for temperature at 2 metres and for precipitation, Climate Hazards Center InfraRed Precipitation with Stations (CHIRPS) and African Rainfall Climatology from the Famine Early Warning System (FEWS-ARC) were used. To give an overview of these nine model experiments, we presented and compared the results of the latter with the reanalysis taken into account for the period 1983 - 2005. The results indicated that the nine models correctly reproduced the temperature and rainfall in West Africa during the historical period. In the Guinean coast region, REMO-NorESM1 and RegCM4-MPI-MR models well simulated precipitation and temperature during the historical period. In the Savannah region, RegCM4-NorESM1, CCLM5-MPI-LR, REMO-NorESM1, CCLM5-NorESM1 and CCLM5-HadGEM2 model gave best result. In the Sahel region, the RegCM4-HadGEM2 model gave a good correlation. Using the Taylor diagram in the historical period, all CORDEX-CORE RCMs had a strong relationship with temperature. 展开更多
关键词 CORDEX-CORE Regional Climate Model evaluation ERA5 CHIRPS FEWS-ARC West Africa
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Effectiveness of CORDEX-AFRICA Multi-Model Ensemble in Replicating Temperature and Associated Extremes over Côte d’Ivoire
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作者 Assi Louis Martial Yapo Benjamin K. Kouassi +7 位作者 Adjoua Moise Landry Famien Pêlèmayo Raoul Touré Fidèle Yoroba Dro Touré Tiemoko Kouakou Kouadio Mamadou Diarrassouba Dianikoura Ibrahim Koné Adama Diawara 《Atmospheric and Climate Sciences》 2025年第1期147-174,共28页
Developing reliable adaptation and mitigation strategies to combat climate change is necessary at regional and local scales. The present study analyses the ability of the multi-model ensemble (MME) composed of fourtee... Developing reliable adaptation and mitigation strategies to combat climate change is necessary at regional and local scales. The present study analyses the ability of the multi-model ensemble (MME) composed of fourteen (14) CORDEX-Africa simulations to capture characteristics of the mean temperature for the present day (1979-2005) and associated extremes over Côte d’Ivoire. For this end, the analysis uses the mean variables of the temperature (i.e., minimum temperature (TMIN), mean temperature (TMEAN) and maximum temperature (TMAX)) as well as associated extremes such as intra-period extreme temperature range (ETR), warm spell duration index (HWFI) and warm days index (TX90P) during January-February-March (JFM), April-May-June (AMJ), July-August-September (JAS) and October-November-December (OND) seasons. The results indicate that mean temperature variables (TMIN, TMEAN and TMAX) are underestimated by CORDEX MME in general, except TMEAN in the centre of Côte d’Ivoire. On the other hand, extreme temperature indices are overestimated over Côte d’Ivoire, except ETR in JAS with an underestimation of about 2˚C and TX90P during JAS in the southern part of the country in JFM, AMJ and OND with an underestimation varying between 1% to 4%. In addition, CORDEX MME and observational datasets (CPC and NCEP) have a significant correlation in simulating temperature variables (TMIN, TMEAN, TMIN), while this correlation is not significant in general for extreme temperature, except ETR and HWFI. Furthermore, extreme temperatures (TX90P and HWFI) are characterized by more important interannual variability in the observations CPC and NCEP for ETR. Moreover, mean temperature variables (TMIN, TMEAN, TMAX) show slight interannual variability with respect to the observations CPC and NCEP, which are characterized by the most variability. Overall, CORDEX MME outperforms the seasonal and spatial variability of the temperature and associated extremes over Côte d’Ivoire, although some biases in representing their magnitudes. Thus, the results of the present study will help take appropriate adaptation and mitigation strategies against heatwaves and extreme temperature advent over Côte d’Ivoire as these climate extremes are projected to increase over the country. 展开更多
关键词 Extreme Temperature Indices Regional Climate Models evaluation CORDEX Côte d’Ivoire
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