基于景观尺度的城市生态健康时空过程——贵阳市案例研究  

Spatio-temporal analysis of ecological health at the landscape scale——A case study of Guiyang,China

作　　者：李卫海[1] 李阳兵[1] 邵景安[2] 谢静[1] 丹文丽[1] 

机构地区：[1]贵州师范大学地理与环境科学学院,贵阳550001 [2]重庆师范大学地理科学学院,重庆400047

出　　处：《环境科学学报》2011年第2期440-448,共9页Acta Scientiae Circumstantiae

基　　金：教育部新世纪优秀人才支持计划资助(No.NCET-05-0819);贵州省高层次人才科研条件特助经费项目(No.TZJF-2007)~~

摘　　要：依据压力-状态-响应概念模型,建立了基于景观尺度的贵阳市生态健康评价指标体系.以1991年TM影像和2006年CBERS影像为基础数据源,采用空间单元网格(1km×1km)作为评价单元,在GIS技术支持下获取了与贵阳市景观生态健康评价相关的宏观生态指标,并借助GIS的空间分析功能制作出各单项指标和综合指标的空间分布图,完成了对区域生态健康的综合评价.结果表明,研究区生态健康趋好的区域占17.91%,生态健康相对无变化的区域占67.72%,生态环境健康趋差的区域占14.37%.研究区建设用地比例的较大增加直接导致景观生态健康的降低.An evaluation index system for ecological health in the city of Guiyang at the landscape scale is established according to the pressure-state-response （PSR） conceptual mode1. The correlative ecological indices for ecological health assessment are extracted using images of TM （year 1991） and CBERS （year 2006）. Spatial unit grids at 1km×1km are selected as assessment units,and the spatial analysis function of GIS is applied to create a spatial distribution map for each single index and general indices. The integrated evaluations for ecological health of Guiyang indicate that,17.91% of the city area improved,while 14.37% became worse,and 67.72% showed no variation. It is suggested that a significant increase of construction land directly leads to the decrease of the landscape＇s ecological health in the city.

关 键 词：贵阳市 生态健康 评价 景观尺度 

分 类 号：X171[环境科学与工程—环境科学]