摘要
以内蒙古杭锦旗为例,研究了该地区20世纪80年代到21世纪初荒漠草原景观的动态。结果表明:杭锦旗近20年来明沙或盐碱斑景观的面积有较大增加,且有逐渐相连的趋势;居民地和耕地的面积增加,水域面积减少;两个时期的景观破碎度具有极显著的差异;大部分景观类型的景观破碎度和异质性增加;沙鞭草地景观的面积大幅下降,更耐旱的中间锦鸡儿草地景观的面积增加。在景观类型的转化过程中,荒漠草原景观类型转化为明沙或盐碱斑景观的面积最大。
The landscape dynamic change from 1980s to 21 century of desert-steppe of Hangjin district was researched. The result showed that sandy land area in Hangjin district is enlarging and being joined in these years; the area of residential and the tilth is enlarging, and water area is minishing; the significance of landscape fragmentation between two periods is very different; most landscape fragmentations and heterogeneity of the landscapes are enlarging; the area of Psammochloa mongolica in desert-steppe is minishing dadly,and the area of Caragana intermedia Kuang et H. C. Fu is enlarging. During the process of desert-steppe change to other kind of landscape , area that desert-steppe changed to desert and salina was the largest.
出处
《中国草地学报》
CSCD
2007年第5期72-78,共7页
Chinese Journal of Grassland
基金
科技部社会公益研究项目(2004DIB3J094)
关键词
景观动态
杭锦旗
景观指数
Landscape dynamic change
Hangjin district
Landscape-level index
