干旱区生态环境知识资源中心(Arid): 气候变化和人类活动在沙漠化过程中相对作用评价综述

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	气候变化和人类活动在沙漠化过程中相对作用评价综述
其他题名	Assessment of the Relative Role of Climate Change and Human Activities in Desertification:A Review
	许端阳 1; 李春蕾 2; 庄大方 3; 潘剑君 4
来源期刊	地理学报
ISSN	0375-5444
出版年	2011
卷号	66 期号:1 页码:68-76
中文摘要	气候变化和人类活动是导致沙漠化的两大驱动力,系统评价两者在沙漠化过程中的相对作用对于深入理解沙漠化过程的驱动力作用机理以及开展防沙治沙工作具有重要的意义.本研究从定性--半定量和定量研究两个方面对目前气候变化和人类活动在沙漠化过程中相对作用评价方法进行了系统的梳理,认为目前的评价方法存在着主观性强,可重复操作性差,多基于行政单元而缺乏在连续的空间域上来评价气候变化和人类活动相对作用等不足.基于对以往研究的总结和笔者近阶段的相关研究成果,笔者认为开展气候变化和人类活动在沙漠化过程中相对作用的评价工作关键是突破两类驱动力相对作用在连续的空间域上进行评价和表达这一瓶颈的制约,并提出了以定量研究为核心,以NPP为衡量气候变化和人类活动在沙漠化过程中相对作用的公共指标,通过拆分"驱动力作用--沙漠化土地动态响应"这一生态过程为若干可能情景来构建气候变化和人类活动在沙漠化过程中相对作用评价方法的思路.此外,在进行定量评价时,还需要考虑结果验证以及评价尺度这两个重点问题对评价结果和结论的影响
英文摘要	Desertification is becoming one of the most serious global social-economic-environmental issues of our time, which threatens human survival and development. Climate change and human activities are the two kinds of driving forces in desertification, and assessing their relative role in desertification has important significance for deeply understanding the driving mechanism of desertification and preventing desertification expansion. This paper systematically reviewed the methods of assessing the relative role of climate change and human activities in desertification from qualitative, semi-quantitative and quantitative aspects. The authors found that there were some disadvantages 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 continuous space. According to the progress of previous researches and the works conducted by the authors recently,we thought that the key point of assessing the relative role of climate change and human activities in desertification was breaking through the bottleneck that restricted the expression of the relative role of two drivers in continuous space. Meanwhile, the authors put forward a quantitative approach to assess the relative role of climate change and human activities in desertification basing on selecting NPP as a common indicator to measure the relative role of climate change and human activities in desertification and identifying the ecological process of "driving force affecting-desertification land dynamically responded" into several scenarios. Besides, validation and scale of assessment should be taken into account when quantitatively assessing the relative role of climate change and human activities in desertification
中文关键词	沙漠化 ; 气候变化 ; 人类活动 ; 相对作用评价
英文关键词	desertification climate change human activities
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOGRAPHY
WOS研究方向	Geography
CSCD记录号	CSCD:4126782
来源机构	中国科学院地理科学与资源研究所 ; 新疆师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226273
作者单位	1.中国科学技术信息研究所, 北京 100038, 中国; 2.新疆师范大学地理科学与旅游学院, 乌鲁木齐, 新疆 830054, 中国; 3.中国科学院地理科学与资源研究所, 北京 100101, 中国; 4.南京农业大学资源与环境科学学院, 南京, 江苏 210095, 中国
推荐引用方式 GB/T 7714	许端阳,李春蕾,庄大方,等. 气候变化和人类活动在沙漠化过程中相对作用评价综述[J]. 中国科学院地理科学与资源研究所, 新疆师范大学,2011,66(1):68-76.
APA	许端阳,李春蕾,庄大方,&潘剑君.(2011).气候变化和人类活动在沙漠化过程中相对作用评价综述.地理学报,66(1),68-76.
MLA	许端阳,et al."气候变化和人类活动在沙漠化过程中相对作用评价综述".地理学报 66.1(2011):68-76.