干旱区生态环境知识资源中心(Arid): 近50年来盐池县土地沙漠化驱动因素的时间变化

Arid

	近50年来盐池县土地沙漠化驱动因素的时间变化
其他题名	Time Series Variation in the Driving Factors Leading to Land Desertification in Yanchi County Over the Last 50 Years
	马永欢 1; 周立华 2; 朱艳玲 2; 李斌 3
ISSN	1001-4675
出版年	2009
卷号	26 期号:2 页码:249-254
中文摘要	基于因子分析法,在近50年来数据可获取性的基础上,研究了盐池县土地沙漠化过程中驱动因素的时间变化.因子分析结果表明:1981-2002年人类活动对土地沙漠化驱动作用的贡献率为72.22%,比1953-1980年高11.56%,比1981-2006年高14.4%;1953-1980年自然因素的贡献率为29.21%,比1981-2002年高12.64%,比1981-2006年低3.19%.并且,这3个时间段综合因素的比重大致相当,这种变化说明2002年之前盐池县人类活动对土地沙漠化的影响是不断增强的.
英文摘要	This study evaluates the time series variation in the driving factors that lead to land desertification in Yanchi County,Ningxia Hui Autonomous Region,China based on factor analysis of the currently available data.The results demonstrated that human activities accounted for 72.22% of the process of land desertification between 1981 and 2002,which was 11.56% and 14.4% higher than the contribution rates between 1953 and 1980 and between 1981 and 2006,respectively.The contribution rate of natural factors accounted for 29.21% of desertification between 1953 and 1980,which was 12.64% higher than the contribution of natural factors during the period from 1981 to 2002 but 3.19% lower than the contribution between 1981 and 2006.Moreover,the proportion of the integrated factors during these three periods was approximately the same.Such changes indicate that the impact of human activities on desertification increased continuously prior to 2002.The results also demonstrate that the excessive economic activities are the primary factors leading to land desertification in Yanchi Countya.Therefore,it is suggested that rural industrialization be developed to increase the value of farm and side products and the per capita income of farmers’ households so that the ecologically destructive farming activities currently in place can be phased out.In addition,the results of this study demonstrate that implementation of the prohibition of grazing in areas where the ecology is fragile and soil erosion is serious plays an active role in conservation of the environment.
中文关键词	盐池 ; 土地沙漠化 ; 驱动因素 ; 人类活动 ; 因子分析法
英文关键词	Yanchi County land desertification driving factor factor analysis method
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:3657526
来源机构	中国科学院西北生态环境资源研究院 ; 中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223600
作者单位	1.中国科学院科技政策与管理科学研究所, 北京 100190, 中国; 2.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 3.中国科学院地理科学与资源研究所, 北京 100101, 中国
推荐引用方式 GB/T 7714	马永欢,周立华,朱艳玲,等. 近50年来盐池县土地沙漠化驱动因素的时间变化[J]. 中国科学院西北生态环境资源研究院, 中国科学院地理科学与资源研究所,2009,26(2):249-254.
APA	马永欢,周立华,朱艳玲,&李斌.(2009).近50年来盐池县土地沙漠化驱动因素的时间变化.,26(2),249-254.
MLA	马永欢,et al."近50年来盐池县土地沙漠化驱动因素的时间变化".26.2(2009):249-254.