草业科学2012，Vol.29Issue(1)：19-24,6.
内蒙古草地面积的变化及其成因分析——以锡林郭勒盟多伦县为例
Variation of grassland area and its cause in Inner Mongolia - A case study on Duolun County of Xilin Gol League
摘要
Abstract
Variation of grassland area in the Duolun County of Xilin Gol League was presented by combining field survey and remote sensing technology and its causes were discussed in this study. The results of this study showed that grassland area in Duolun County was fluetuant from 1971 to 2007, indicating that the grassland area decreased from 227 640.93 ha in 1980 s to 166 929.43 ha in 1990 s, and restored to grassland area of the 1980 s in 2000 due to conversion of cropland to forest and grassland. Under the cli mate warming and drying, human disturbance was key factor affecting the grassland area. Plenty of grasslands were reclaimed into croplands and were substituted by the lakes and marshes in 1990 s when the climate was warm and humid, resulting in the decrease of grassland areas. In 1980 s, grassland degenerated and deserted because of overgrazing. Although the rainfall decreased, the grassland had been gradually restored because of better management from 2000 to 2007.关键词
草地面积/演变成因/3S技术/气候变化/沙化退化Key words
grassland area/fluctuant cause/3S technology/climate ehange/grassland desertification分类
农业科技引用本文复制引用
李兴华,魏玉荣,张存厚..内蒙古草地面积的变化及其成因分析——以锡林郭勒盟多伦县为例[J].草业科学,2012,29(1):19-24,6.基金项目
中国气象局气候变化专项 （）
国家公益性行业（气象）科研专项 （）
