呼和浩特市大青山南坡生态用地时空演变分析

Spatial-temporal evolution of ecological land use on the south slope of Daqingshan mountain in Hohhot

利用GIS空间统计、景观格局指数计算、主成分分析等方法,分析2000-2018年间大青山南坡生态用地幅度、动态度、转移方向和空间格局的演变特征及驱动机制。研究发现,生态用地减少且向建设用地与耕地转移,动态度变化显著,生态用地空间格局的特点是破碎度和不稳定性增加,其演变是人口数量的增长、经济的向前发展和生态环境保护支出的增加三者共同作用的结果。

Using GIS spatial statistics,landscape pattern index calculation,principal component analysis and other methods,this paper analyzes the evolution characteristics and driving mechanism of area size,dynamics,transformation directions and spatial patterns of the ecological land on the south slope of Daqingshan mountain from 2000 to 2018,which will have far-reaching guiding significance for the dynamic protection,planning and construction of ecological land on the south slope of Daqingshan mountain.The following findings are obtained:firstly,the ecological land decreases in area and transforms to construction and cultivated lands,and the dynamic degree changes significantly;secondly,the spatial pattern of ecological land is characterized by the increase of fragmentation and instability;thirdly,its evolution is the result of the growth of urban population,the rapid development of economy and the increase of ecological and environmental protection expenditures.