干旱区生态环境知识资源中心(Arid): 鄂尔多斯高原土地沙化过程中自然与人为因素的定量分析

Arid

	鄂尔多斯高原土地沙化过程中自然与人为因素的定量分析
其他题名	The quantitative analysis of effect factors on sandy desertification in ordos plateau
	贾宝全 1; 慈龙骏 1; 高志刚 2; 张红旗 3
来源期刊	林业科学
ISSN	1001-7488
出版年	2003
卷号	39 期号:6 页码:15-20
中文摘要	以内蒙古自治区伊金霍洛旗为研究对象，选择了该旗1959-1999年共41年的19个自然与社会经济统计因子，利用主成份分析（PCA）方法，对土地荒漠化过程中的自然与人为要素作用强度进行了量化分析。结果表明，在伊金霍洛旗的荒漠化发展过程中，人为因素的贡献率为53.8%，自然因素的贡献率仅为10.0%，自然与人为因素共同作用的贡献率为23.4%。对该旗土地沙化的影响最大的自然因素有：年降水量、年均温度、年大风日数、起沙风日数等；人为因素主要有人口数量、人口的自然增长率、粮食作用播种面积以及森地面积等。相关因子的历年变化情况与土地荒漠化状况的分析表明，只要严格控制人口的自然增长率、大力植树造林并着力扩大农田的灌溉面积，调整草场内部结构，则不仅可以防止土地荒漠化的发生，而且可以改善当地的生态。
英文摘要	According to the latest national investigation in 1999, the area of desertification in China is 267.4 * 10~4 km, accounting for 27.3 % of the whole territory. In China, the interlock area of farming and pasturing in Semi-arid region is the main region which is affected by desertification seriously. In this paper, in order to analysis the intensity of natural and hu-man activity in desertification process, the Yijinhuoluo County which was located in the interlock area of fanning and pas-turing was selected as a case study area. On the basis of abundant data from 1959 to 1999, the population quantity, popu-lation density, population natural growth rate, agriculture and non-husbandry population, non-agriculture and non-husband-ry population, livestock quantity, cultivated land, irrigated land, grain planting land, forest land, afforestation land, total production value of agriculture and husbandry, annual precipitation, annual mean temperature, annual relative humidity, the day of gale, the days of velocity above 5 m·s~(-1), the days of sandstorm and annual mean wind speed were choosen and the principal component analysis method was used to measure the intensity of nature and human activity factors quantifica-tionally. The results showed that in the process of the desertification process, 53.8% was caused by anthropogenic activity, 10.0% was caused by nature factors, and 23.4 % was caused by anthropogenic activity combined with nature factors in Yi-jinhuoluo County. In the study area, the main anthropogenic factors included population(number, increasing rate) , forest and and planting land area, the nature factors were annual preicipitation, annual mean temperature, the day of gale and the days of velocity above 5 m·s~(-1). Comparing the anthropogenic factors and land sandy desertification, it was found that the anthropogenic factors had two effects in the process of desertification, in which it can accelerate the desertification pro-cess in some times, but in another period it can restrain the desertification process. By reducing the population natural growth rate, enlarging the area of irrigated land and forestry land, and increasing the meliorated and artificial grassland, the desertification can be controlled easily.
中文关键词	沙质荒漠化 ; 自然因素 ; 人为因素 ; 作用强度 ; 定量分析
英文关键词	sandy desertification nature factors anthropogenic factors quantitative analysis ordos plateau yijinghuoluo county
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:1173414
来源机构	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/2XILL650/204186
作者单位	1.中国林业科学研究院林业研究所, 北京 100091, 中国; 2.新疆财经学院经济学系, 乌鲁木齐, 新疆 830012, 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	贾宝全,慈龙骏,高志刚,等. 鄂尔多斯高原土地沙化过程中自然与人为因素的定量分析[J]. 中国科学院地理科学与资源研究所,2003,39(6):15-20.
APA	贾宝全,慈龙骏,高志刚,&张红旗.(2003).鄂尔多斯高原土地沙化过程中自然与人为因素的定量分析.林业科学,39(6),15-20.
MLA	贾宝全,et al."鄂尔多斯高原土地沙化过程中自然与人为因素的定量分析".林业科学 39.6(2003):15-20.