气候变化和人类活动在沙漠化过程中相对作用评价综述(英文)

编号 zgly0001585605

文献类型 期刊论文

文献题名 气候变化和人类活动在沙漠化过程中相对作用评价综述(英文)

作者 许端阳  李春蕾  庄大方  潘剑君 

作者单位 InstituteofScientificandTechnicalInformationofChina  NanjingAgriculturalUniversity  XinjiangNormalUniversity  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS 

母体文献 Journal of Geographical Sciences 

年卷期 2011年05期

年份 2011 

分类号 P467 

关键词 desertification  climatechange  humanactivities  relativerole  assessment 

文摘内容 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 expansion.This 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 respectively.The authors found that there were still some problems in the previous researches.For 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 space.According 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 scenarios.Meanwhile,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.