干旱区生态环境知识资源中心(Arid): 应用因子分析研究塔里木河下游生态环境的退化

Arid

	应用因子分析研究塔里木河下游生态环境的退化
其他题名	Study on the Degeneration of Ecological Environment in the Lower Reaches of the Tarim River by Using Factor Analysis
	徐海量; 宋郁东; 陈亚宁; 艾合买提·那由朴
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2005
卷号	28 期号:1 页码:21-25
中文摘要	采用SPSS分析软件,对塔里木河下游沿河道布设的39个样地进行了环境退化的因子分析.通过数学变换,9个观测指标被转换为2个综合指标(主分量).根据本地区的实际,对2个综合指标进行了环境解释.依据这2个主分量的贡献率计算了塔里木河下游39个样地的因子得分,并据此进行了环境退化程度(荒漠化)的评价.从因子得分结果看,塔里木河下游地区呈明显的随距大西海子水库距离的增加荒漠化程度加重的特点,引起这一结果的主要原因是水、盐条件逐渐恶化带来的植被衰败.从分类的结果看,与本地区的实际基本相符合.这说明因子分析的方法综合了多指标的综合影响,划分的结果更加客观.
英文摘要	The previous studies reveal that the climate change in the lower reaches of the Tarim River is not so obvious since recent decades, and the formation and development of land desertification in the region are closely related to the vulnerable ecological environment and the extensive exploitation and utilization of water and land resources. In this paper, the degeneration of ecological environment in the lower reaches of the Tarim River is analyzed by monitoring 39 plots and using the factor analysis, which is supported by the software of Statistical Package for the Social Science (SPSS) . Through mathematic transform, the 9 observational indexes are transformed into 2 synthetic indexes. According to the actuality and the data invested in the region, the environmental degeneration is explained with the 2 synthetic indexes. Based on the cumulated variance explained, the factor scores of the 39 plots are calculated, and the desertification is evaluated by using the factor scores. Viewing from the consequence, the desertification in the lower reaches of the Tarim River becomes more serious with the increase of distance away from the Daxihaizi Reservoir, which is mainly caused by shortage of water resources, salt accumulation in topsoil and degeneration of the natural vegetation. The study results accord basically with the actuality in the region.
中文关键词	生态环境 ; 环境退化 ; 因子分析 ; 塔里木河下游
英文关键词	eco-environment environmental degeneration factor analysis lower reaches of the Tarim River
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:1880926
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206127
作者单位	中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	徐海量,宋郁东,陈亚宁,等. 应用因子分析研究塔里木河下游生态环境的退化[J]. 中国科学院新疆生态与地理研究所,2005,28(1):21-25.
APA	徐海量,宋郁东,陈亚宁,&艾合买提·那由朴.(2005).应用因子分析研究塔里木河下游生态环境的退化.干旱区地理,28(1),21-25.
MLA	徐海量,et al."应用因子分析研究塔里木河下游生态环境的退化".干旱区地理 28.1(2005):21-25.