文献类型：期刊文献

中文题名：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

英文题名：THE QUANTITATIVE ANALYSIS OF EFFECT FACTORS ON SANDY DESERTIFICATION IN ORDOS PLATEAU

作者：贾宝全[1] 慈龙骏[1] 高志刚[2] 张红旗[3]

第一作者：贾宝全

机构：[1]中国林业科学研究院林业研究所;[2]新疆财经学院经济学系;[3]中国科学院地理科学与资源研究所

年份：2003

卷号：39

期号：6

起止页码：15-20

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目 ( 3 0 0 70 60 1;3 9990 490 )

语种：中文

中文关键词：鄂尔多斯高原;土地沙化过程;自然因素;人为因素;定量分析;作用强度

外文关键词：Sandy desertification, Nature factors, anthropogenic factors, Quantitative analysis, Ordos Plateau, Yijinhuoluo County

分类号：S288

摘要：以内蒙古自治区伊金霍洛旗为研究对象 ,选择了该旗 1 95 9— 1 999年共 41年的 1 9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 5 3 8% ,自然因素的贡献率仅为 1 0 0 % ,自然与人为因素共同作用的贡献率为 2 3 4%。对该旗土地沙化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、粮食作物播种面积以及林地面积等。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。
According to the latest national investigation in 1999, the area of desertification in China is 267.4×10 4km 2, 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 human activity in desertification process, the Yijinhuoluo County which was located in the interlock area of farming and pasturing was selected as a case study area. On the basis of abundant data from 1959 to 1999, the population quantity, population density, population natural growth rate, agriculture and non-husbandry population, non-agriculture and non-husbandry 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 5m·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 quantificationally. 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 Yijinhuoluo County. In the study area, the main anthropogenic factors included population(number, increasing rate), forest land and planting land area, the nature factors were annual preicipitation, annual mean temperature, the day of gale and the days of velocity above 5m·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 process 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.