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| 1 | Toward an improved data stewardship and service for environmental and ecological science data in West China显示文摘Sharing of scientific data can help scientific research to flourish and facilitate more widespread use of scientific data for the benefit of society.The Environmental and Ecological Science Data Center for West China(WestDC),sponsored by the National Natural Science Foundation of China(NSFC),aims to collect,manage,integrate,and disseminate environmental and ecological data from western China.It also aims to provide a long-term data service for multidisciplinary research within NSFC’s‘‘Environment and Ecology of West China Research Plan’’(NSFC West Plan).An integrated platform has been developed by the WestDC,and this has the function of data sharing,acting as a knowledge repository.Major data sets developed by the WestDC include basic geographic data,the regionalization of global data set for China,scientific data for cold and arid regions in China,scientific data for the cryosphere in countries that neighbor China,data relating to the inland river basins in northwestern China,and data submitted by the NSFC West Plan projects.In compliance with the‘‘full and open’’data sharing policy,most data in the WestDC can be accessed online.Highlights include detailed data documentation,the integration of data with bibliographic knowledge,data publishing,and data reference. | Xin Li Zhuotong Nan Guodong Cheng Yongjian Ding Lizong Wu Liangxu Wang Jian Wang Youhua Ran Hongxing Li Xiaoduo Pan Zhongming Zhu | 2011 | International Journal of Digital Earth2011，4，4： | 11 |
| 2 | Mapping the permafrost stability on the Tibetan Plateau for 2005–2015显示文摘Data scarcity is a major obstacle for high-resolution mapping of permafrost on the Tibetan Plateau(TP).This study produces a new permafrost stability distribution map for the 2010 s(2005–2015)derived from the predicted mean annual ground temperature(MAGT)at a depth of zero annual amplitude(10–25 m)by integrating remotely sensed freezing degree-days and thawing degree-days,snow cover days,leaf area index,soil bulk density,high-accuracy soil moisture data,and in situ MAGT measurements from 237 boreholes on the TP by using an ensemble learning method that employs a support vector regression model based on distance-blocked resampled training data with 200 repetitions.Validation of the new permafrost map indicates that it is probably the most accurate of all currently available maps.This map shows that the total area of permafrost on the TP,excluding glaciers and lakes,is approximately 115.02(105.47–129.59)×10^4 km^2.The areas corresponding to the very stable,stable,semi-stable,transitional,and unstable types are 0.86×10^4,9.62×10^4,38.45×10^4,42.29×10^4,and 23.80×10^4 km^2,respectively.This new map is of fundamental importance for engineering planning and design,ecosystem management,and evaluation of the permafrost change in the future on the TP as a baseline. | Youhua RAN Xin LI Guodong CHENG Zhuotong NAN Jinxing CHE Yu SHENG Qingbai WU Huijun JIN Dongliang LUO Zhiguang TANG Xiaobo WU | 2021 | Science China Earth Sciences2021，64，1： | 11 |
| 3 | First comprehensive fine-resolution global land cover map in the world from China—Comments on global land cover map at 30-m resolution显示文摘Land cover maps are of fundamental importance in studies of the complex interactions between human activities and global change.Mapping land cover using remote sensing is a traditional but still very active field.In the past 45 years,nearly 30000 papers about land cover mapping were published worldwide,including approximately 10000 | RAN YouHua LI Xin | 2015 | Science China Earth Sciences2015，58，9： | 10 |
| 4 | TanSat: a new star in global carbon monitoring from China显示文摘Accurate monitoring of changes in atmospheric carbon dioxide(C02)coneentration and carbon sinks/sources distribution are an important prerequisite for comprehensively understanding the global carbon cycle and correctly predicting future climate change.Satellite remote sensing is the only method to achieve this monitoring with high resolution.Although spaceborne hyperspectral remote sensing sensors have been successfully applied to monitor the concentration of C02 in the upper troposphere,they are not sensitive to changes in C02 concentrations near the Earth's surface.W让h the rapid development of sensor technology,quantitative remote sensing algorithms,satellites equipped with near-infrared and short-wave infrared hyperspectral sensors dedicated to C02 monitoring have been successively launched. | Youhua Ran Xin Li | 2019 | Science Bulletin2019，64，5： | 4 |
| 5 | HEIHE WATERSHED ALLIED TELEMETRY EXPERIMENTAL RESEARCH (HiWATER): Scientific Objectives and Experimental Design显示文摘 | Li Xin Cheng Guodong Liu Shaomin Xiao Qing Ma Mingguo Jin Rui Che Tao Liu Qinhuo Wang Weizhen Qi Yuan Wen Jianguang Li Hongyi Zhu Gaofeng Guo Jianwen Ran Youhua Wang Shuoguo Zhu Zhongli Zhou Jian Hu Xiaoli Xu Ziwei | 2013 | Bulletin of the American Meteorological Society2013，，8： | 3 |
| 6 | Mid-term outcomes after intramedullary fixation of peritrochanteric femoral fractures using the new proximal femoral nail antirotation (PFNA)显示文摘 | Yake Liu Ran Tao Fan Liu Youhua Wang Zhenyu Zhou Yi Cao Hong Wang | 2010 | Injury2010，，8： | 2 |
| 7 | Evaluation of four remote sensing based land cover products over China显示文摘 | Ran Youhua Li Xin Lu Ling | 2010 | Intemational Journal of Remote Sensing2010，31，2： | 1 |
| 8 | Watershed Allied Telemetry Experimental Research显示文摘 | Li Xin Li Xiaowen Li Zengyuan Ma Mingguo Wang Jian Xiao Qing Liu Qiang Che Tao Chen Erxue Yan Guangjian Hu Zeyong Zhang Lixin Chu Rongzhong Su Peixi Liu Qinhuo Liu Shaomin Wang Jindi Niu Zheng Chen Yan Jin Rui Wang Weizhen Ran Youhua | 2009 | Journal of Geophysical Research Atmospheres2009，，22： | 1 |
| 9 | Large-scale land cover mapping with the integration of multi-source in- formation based on the Dempster-Shafer theory显示文摘 | Ran Youhua Li Xin Lu Ling | 2012 | In- ternational Journal of Geographical Information Sci- ence2012，26，1： | 1 |
| 10 | Distribution of permafrost in China:an overview of existing permafrost maps显示文摘 | Ran Youhua Li Xin Cheng Guodong | 2012 | Permafrost and Periglacial Processes2012，23，4： | 1 |
| 11 | Evaluation of four remote sensingbased land cover products over China显示文摘 | Youhua Ran Xin Li Ling Lu | 2010 | International Journal of Remote Sensing2010，31，2： | 1 |
| 12 | Large-scale land cover mapping with the integration of multi-source information based on the Dempster-Shafer theory显示文摘 | Ran Youhua Li Xiong Lu Liang | 2012 | International Journal of Geographical Information Sci- ence2012，26，1： | 1 |
| 13 | Terrestrial carbon cycle model-data fusion:Progress and challenges显示文摘The terrestrial carbon cycle is an important component of global biogeochemical cycling and is closely related to human well-being and sustainable development.However,large uncertainties exist in carbon cycle simulations and observations.Model-data fusion is a powerful technique that combines models and observational data to minimize the uncertainties in terrestrial carbon cycle estimation.In this paper,we comprehensively overview the sources and characteristics of the uncertainties in terrestrial carbon cycle models and observations.We present the mathematical principles of two model-data fusion methods,i.e.,data assimilation and parameter estimation,both of which essentially achieve the optimal fusion of a model with observational data while considering the respective errors in the model and in the observations.Based upon reviewing the progress in carbon cycle models and observation techniques in recent years,we have highlighted the major challenges in terrestrial carbon cycle model-data fusion research,such as the“equifinality”of models,the identifiability of model parameters,the estimation of representativeness errors in surface fluxes and remote sensing observations,the potential role of the posterior probability distribution of parameters obtained from sensitivity analysis in determining the error covariance matrixes of the models,and opportunities that emerge by assimilating new remote sensing observations,such as solar-induced chlorophyll fluorescence.It is also noted that the synthesis of multisource observations into a coherent carbon data assimilation system is by no means an easy task,yet a breakthrough in this bottleneck is a prerequisite for the development of a new generation of global carbon data assimilation systems.This article also highlights the importance of carbon cycle data assimilation systems to generate reliable and physically consistent terrestrial carbon cycle reanalysis data products with high spatial resolution and longterm time series.These products are critical to the accurate estimation of carbon cycles at the global and regional scales and will help future carbon management strategies meet the goals of carbon neutrality. | Xin LI Hanqing MA Youhua RAN Xufeng WANG Gaofeng ZHU Feng LIU Honglin HE Zhen ZHANG Chunlin HUANG | 2021 | Science China Earth Sciences2021，64，10： | 0 |
| 14 | Evaluation of the permafrost stability degradation from 1980 to 2010 in China显示文摘permafrost;;mean annual air temperature(MAAT);;air temperature;;reanalysis;;thermal | YouHua Ran | 2016 | Research in Cold and Arid Regions2016，8，5： | 0 |
| 15 | Investigate the relationships between the Aral Sea shrinkage and the expansion of cropland and reservoir in its drainage basins between 2000 and 2020显示文摘The Aral Sea crisis is considered one of the most severe ecological tragedies from the 1960s in Central Asia.The reasons for this crisis,especially in the twenty-first century,are still scientific disputes.This study investigated the relationship between land cover change in the Aral Sea related basins and the Aral Sea crisis from 2000 to 2020 by employing the GlobeLand30 dataset with 30 m resolution.Results showed that the cultivated land in the Aral Sea basin increased by 2,291 km^(2),and 75.4%of it occurred in the region of Karakum Canal,the largest water conservancy project for irrigation in the world.The water surface area of reservoirs increased by 1,183.5 km^(2) during the same period.Coincident with this change,the Aral Sea further shrank from 26,280.8 km^(2) in 2000 to 9,285.2 km^(2) in 2020,mainly occurred in the first decade of the twenty-first century.These imply that the Aral Sea crisis is persistent in the twenty-first century and is likely driven by water competition among different regions within the basin for agricultural irrigation.Strengthening the coordination and cooperation of crossboundary water resource management is still the most important management strategy choice to address the crisis from a broader perspective. | Qiang Li Xin Li Youhua Ran Min Feng Yanyun Nian Meibao Tan Xi Chen | 2021 | International Journal of Digital Earth2021，14，6： | 0 |
| 16 | A landscape management analysis framework and its preliminary application in Ejina Oasis, Northwest China显示文摘The implementation of integrated landscape management to support local and regional human well-being is crucial in arid regions,but its application to date is very limited.Although analytical frameworks have been established to maximize ecosystem services via trade-offs between different landscape configurations,consumption factors such as water resources are rarely and weakly considered in such frameworks.In this paper,an improved integrated landscape-management analysis framework,called the Consumption-integrated Landscape Management to Ecosystem Service(CLMES),is proposed.In this framework,consumption factors are integrated at the same level as ecosystem services.The improved analytical framework is then used to assess and optimize landscape design in the Ejina Oasis,an extremely arid region in western China.Three landscape conditions(past,current,and future)are evaluated,based on the CLMES.Our results indicate that the Heihe River water-allocation program effectively promoted ecosystem services in the Ejina Oasis from 2000 to 2011.However,the excessive expansion of cropland led to a slight decline in habitat quality.An optimized landscape configuration and policy suggestions are proposed,which may be beneficial to the improvement of total water-use efficiency,oasis stability,and resilience of the ecological?social system in the Ejina Oasis. | YouHua Ran Yan Zhao | 2019 | Research in Cold and Arid Regions2019，11，3： | 0 |
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