北京生态用地的空间格局及复杂性

Exploring Spatial Patterns and Complexities of Ecological Lands in Beijing

在都市化背景下,近年北京生态用地变化显著。运用多项景观指数对北京的有林地、灌木林地、其他林地、其他草地、旱地、水浇地进行了空间序列分析。结果显示:1目前各类生态用地承担着多功能化的任务,其复杂性较强;2六类用地均存在空间自相关;3有林地、其他林地、旱地存在显著的波谱特征,并形成了空间圈层结构;广义上,其他林地、旱地、水浇地有空间分形与长程相关性倾向;4各类生态用地具有五个渐进的演化阶段,其演化次序与其景观变化存在着显著关联。本文的空间格局与复杂性分析有助于深入了解社会经济因素对北京生态用地空间演变的影响。

Recently Beijing is experiencing significant changes in terms of ecological lands due to the urbanlzation. Using multiple landscape index, this paper conducts spatial sequence analysis for ecological lands in Beijing like forest land, shrub land, woodland, grassland, dry land, and irrigated land., Results show that： a） various current ecological lands have undertaken different function, which shows complexities characteristics; b） all six ecological lands are spatially autocorrelated; c） significant spectral characteristics have been found for forest land, woodland and dry land, as well as spatial sphere structure, and generally speaking, there is a correlation tendency between spatial fractal and long-range for woodland, dry land and irrigated land; d） five progressive stages of evolution exist for each ecological land, and whose evolution order is significantly correlating with landscape changing. The spatial pattern and complexites analysis in this paper may facilitate understanding impact of social-economic factors on evolutaion of ecological lands in Beijing.