广州东进扩张下的萝岗区土地利用与景观动态分析

Dynamics of Land Use and Landscape Pattern in Luogang District of Guangzhou from 1979 to 2006

以研究区1979年MSS1、990年LandsatTM、2000年LandsatETM以及2006年Aster 4个时段的卫星遥感影像为基础数据,运用RS与GIS技术手段,结合FRAGSTATS景观格局分析软件,对萝岗区近30年来的土地利用与景观格局变化进行了定量分析。研究表明:研究区未利用土地、园地及耕地面积大幅减少,林地与城镇用地面积显著增加。1979—2006年期间,2000年是一个分水岭,2000年前景观的连接度下降,破碎程度增加,景观斑块的形状趋于复杂化,景观结构组成的复杂性也趋于增加。2000年后各指数呈现了逆转的趋势,表明萝岗区为建设成为国际化生态型新城区,在后期的城市化进程中特别重视了生态环境的保护及建设。

In this paper,the land use and landscape spatial pattern were analyzed quantitatively using RS,GIS and software FRAGSTATS on the basis of MSS data obtained in 1979,LandSat TM data obtained in 1990,LandSat ETM＋ data obtained in 2000 and Aster data obtained in 2006.The results showed that the areas of unused land,orchard and cropland decreased during the previous 27 years,while the areas of the forest land and city land remarkably increased.Before 2000 the landscape connectivity decreased and the level of fragmentation increased.Meanwhile landscape patch shape and landscape structure became more complex.But these indexes showed a reversal trend after 2000.This result reflected that in recent years of the urbanization process the particular attention were paid to the environmental protection and ecological construction in Luogang District.