首页|Assessing the relative role of climate change and human activities in desertification of North China from 1981 to 2010
Assessing the relative role of climate change and human activities in desertification of North China from 1981 to 2010
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Desertification is a severe environmental problem induced by both climate change and human activities.This study assessed the relative contribution of climate change,human activities,and different climatic and anthropogenic factors in desertification reversion and expansion of North China from 1981 to 2010.The results showed that the desertification of North China had changed significantly over the past 30 years;desertification reversion and expansion covered an area of 750,464 km2,and the spatial distribution of these regions exhibited considerable heterogeneity.For desertification reversion,climate change and human activity accounted for 22.6％ and 26％,respectively of total reverted land.Wind speed reduction and the improvement ofhydrothermal conditions were the most important climatic factors for desertification reversion in the add region of Northwest China (ARNC) and the Three-River Headwaters region (TRHR),and the reduction in grassland use intensity was the most important anthropogenic factor related to desertification reversion in Inner Mongolia and regions along the Great Wall (IMGW).For desertification expansion,the relative role of climate change was more obvious,which was mainly attributed to the continuous reduction in precipitation in eastern IMGW,and the increase in grassland use intensity was the main factor underlying regional human-induced desertification expansion.
desertificationclimate changehuman activityrelative roleNorth China
Duanyang XU、Alin SONG、Dajing LI、Xue DING、Ziyu WANG
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Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
Institute of Agricultural Resources and Regional Planning of Chinese Academy of Agricultural Sciences, Beijing 100081, China
College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
College of Forestry, Beijing Forestry University, Beijing 100083, China
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This research was jointly supported by the National Key Research and Development Program of ChinaNational Natural Science Foundation of China
NETL
NSTL
万方数据
维普
