研究报告
李卫海,李阳兵,邵景安,谢静,丹文丽.基于景观尺度的城市生态健康时空过程——贵阳市案例研究[J].环境科学学报,2011,31(2):440-448
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
- 基金项目：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)
- 作者
- 单位
- 李卫海
- 贵州师范大学地理与环境科学学院, 贵阳 550001
- 李阳兵
- 贵州师范大学地理与环境科学学院, 贵阳 550001
- 邵景安
- 重庆师范大学地理科学学院, 重庆 400047
- 谢静
- 贵州师范大学地理与环境科学学院, 贵阳 550001
- 丹文丽
- 贵州师范大学地理与环境科学学院, 贵阳 550001
- 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.
- Abstract：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 GISis 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.
- Key words：Guiyang ecological health assessment landscape scale
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