基于RS和GIS的柘皋河流域景观空间格局研究

Research on the Langdscape Spatial Pattern of Zhegao watershed Based on GIS and RS

在RS和GIS技术的支持下,运用景观生态学原理,以2000年LandsatTM7遥感数据为数据源,通过影像解译和实地调查获得柘皋河流域景观类型图,并采用景观指数分析法对流域内景观空间格局做定量分析,为流域内生态保护和区域经济的可持续发展提供有益参考。结果显示:柘皋河流域是以农业为主的发展模式。景观异质性高,分布相对均匀;耕地破碎化程度低,连通性好,利于农业发展;居民点与交通用地破碎化程度高,边缘效应强,对周围影响大。A区农业化和非农化矛盾最强烈。B区景观异质性高,景观类型分布均匀,生态结构稳定。C区景观异质性低,生态稳定性较差。

In this paper , the map of landscape pattern in Zhegao watershed was derived from the landsat TM 7 data taken in 2000 by interpretation and field survey,and it was divided into three regions by drainage area character and administerial character. Useing landscape ecology theory and with the help of GIS , RS technology the landscape patterns were analyzed by quantitative indicators.It is beneficial to given a referrence for protecting The results show that ： Agriculture area. Landscape heterogeneity was cultivated land fragmentation was and economy sustainable development in Zhegao river watershed. is very important to economy development in Zhegao river drainage high, each landscape type is comparatively well-proportioned;.The lowest and the cohesion was highest,it is propitious to agriculture development~ Land for rural residents and transportation fragmentation was hightest and edge effect was strongest, it is said that the conflict between rural development and farming is severe. A section：The conflict between agricuhuralization and non-agriculturalization is strongest, than B and C.B section： Landscape diversity index and evenness index was highest,and the proportiong approximate, ecosystem is relatively steady.C section： landscape heterogeneity unsteady.