%0 Journal Article
%T Spatio-temporal analysis of ecological health at the landscape scale- A case study of Guiyang, China<br>基于景观尺度的城市生态健康时空过程——贵阳市案例研究
%A LI Weihai
%A LI Yangbing
%A SHAO Jing''an
%A XIE Jing
%A DAN Wenli
%A <br>李卫海
%A 李阳兵
%A 邵景安
%A 谢静
%A 丹文丽
%J 环境科学学报
%D 2011
%I 
%X An evaluation index system for ecological health in Guiyang city at the landscape scale is established according to pressure-state-response (PSR) conceptual mode1. These 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 city indicate that, 17.91% of the city areas are been better, while 14.37% been worse, and 67.72% of them seen no variations. It is suggested that a significant increase of construction land directly leading to the decrease of landscape ecological health in the city.
%K Guiyang city
%K ecological health
%K assessment
%K landscape scale<br>贵阳市
%K 生态健康
%K 评价
%K 景观尺度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=CD9D760ABD61C2BCF8A8AA4DDDDD894E&yid=9377ED8094509821&vid=4AD960B5AD2D111A&iid=0B39A22176CE99FB&sid=78976D931AD1540F&eid=A6683C8C0EB9BCA7&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=0&reference_num=86