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Assessment of the relative role of climate change and human activities in desertification：

Journal of Geographical Sciences 2011年第5期21卷 926-936页

作者： XU Duanyang LI Chunlei ZHUANG Dafang PAN Jianjun Institute of Scientific and Technical Information of China Beijing 100038 China Xinjiang Normal University Urumqi 830054 China Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China Nanjing Agricultural University Nanjing 210095 China

Climate change and human activities are the two kinds of driving forces in desertification,and assessing their relative role in desertification is of great significance to deeply understanding the driving mechanisms and preventing desertification *** paper has systematically reviewed the progress of the researches on assessing the relative role of climate change and human activities in desertification from qualitative,semi-quantitative and quantitative aspects *** authors found that there were still some problems in the previous *** example,the subjectivity in assessment was obvious,the assessment cannot be easily repeated,and the assessment and its results were always based on administrative regions and less taken and expressed in a continuous *** to the progress of previous researches and the works conducted by the authors recently,we put forward a quantitative approach by selecting NPP as a common indicator to measure the relative role of climate change and human activities in desertification and dividing the ecological process of ＂driving force effect-dynamic response of desertified land＂ into several ***,validation and scale of assessment should be taken into account when quantitative assessment of the relative role of climate change and human activities in desertification are carried out.

关键词： desertification climate change human activities relative role assessment

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