干旱区生态环境知识资源中心(Arid): 生态建设政策对沙漠化影响的定量分析

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	生态建设政策对沙漠化影响的定量分析
其他题名	Quantitative Analysis on Ecological Construction Policy’s Impact on Sandy Desertification
	樊胜岳; 徐裕财; 徐均; 兰健
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2014
卷号	34 期号:3 页码:893-900
中文摘要	本文从分析沙漠化的物理机制入手,将生态建设政策对沙漠化的作用以政策指数(PIX)来表示,并将其分解为空间广度(PSS)和时间强度(PEF)两个变量,PIX=(PSS+PEF)/2。以宁夏盐池县退耕还林和草地禁牧两种政策为例,在政策实施区分别选取40个样本点,提取沙漠化变化、植被指数变化、政策指数等数据。计算表明:退耕还林和草地禁牧政策与沙漠化变化相关系数分别为-0. 664和-0. 746,两种政策都对沙漠化面积的减少起到了显著的作用。政策广度和政策强度都与沙漠化的逆转显著相关,说明构建的政策指数可以更准确地反映政策因素对沙漠化的作用。政策因素对沙漠化作用的定量分析,对沙漠化治理政策的绩效评价以及新制度的设计,都有重要意义。
英文摘要	This paper starts with the physical mechanism of sandy desertification, and policy index (PIX) is used to represent the impact that ecological construction policy has on sandy desertification. This index is divided into two variables: spatial scope (PSS) and time intensity (PEF), PIX = (PSS + PEF)/2. This paper sets Grain toGreen Program and Prohibiting Grazing carried out in Yanchi County, Ningxia Province as an example, and selects 40 sample points in policy implementation area to extract the data of sandy desertification area change, NDVI (Normalized Difference Vegetation Index) and policy index et al. Calculation shows that, coefficient of correlation of Grain-to-Green Program, Prohibiting Grazing and change of sandy desertification area are 0.664 and 0. 746, which means both policies play a significant role in desertification area reduction. PSS and PEF are significantly associated with sandy desertification, which shows that policy index can more accurately reflect the effect of factors on sandy desertification. Quantitative analysis of policy factors’ effect on desertification is of significance on evaluating the performance of desertification management policy and design of new.
中文关键词	沙漠化 ; 生态建设政策 ; 定量分析
英文关键词	sandy desertification ecology construction policy quantitative analysis
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECONOMICS
WOS研究方向	Business & Economics
CSCD记录号	CSCD:5153929
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232194
作者单位	中央民族大学经济学院, 北京 100081, 中国
推荐引用方式 GB/T 7714	樊胜岳,徐裕财,徐均,等. 生态建设政策对沙漠化影响的定量分析[J],2014,34(3):893-900.
APA	樊胜岳,徐裕财,徐均,&兰健.(2014).生态建设政策对沙漠化影响的定量分析.中国沙漠,34(3),893-900.
MLA	樊胜岳,et al."生态建设政策对沙漠化影响的定量分析".中国沙漠 34.3(2014):893-900.