东莞市风岗镇景观人工改造活动的空间分析

在风岗镇多时段景观结构遥感研究的基础上，根据人工改造活动与景观且分之间的对应关系，构造了人为影响指数这样一个定量描述人工改造活动强度的空间变量。借助人为影响指数，利用系统网格采样方法和地统计学分析，研究了风岗镇过去１０ａ中的景观人工改造活动，揭示了它的空间变异和强度分布特征，并根据该镇社会经济生产活动的空间特点，特别是城市，农业，新经济开发区等用地类型的开发和分布情况，对人工改造活动的空间特征进行

SPATIAL ANALYSIS OF ARTIFICIAL LANDSCAPE TRAN SFORM IN FENGGANG TOWN,DONGGUAN CITY

Besed on the multi temporal landscape remote sensing study in Fenggang Town,Zhujiang River Delta.The analyzed the relations between transforming activities and landscape elements.A spatial variance,Human Impact Index,was raised to express the spatial distribution of artificial transforming strength.Using this index,mesh sampling method,and geostatistics tool,we studied the landscape human impact conditions during the past 10 yeas,and revealed the spatial characteristics of artificial transforming strength and their relations with the regional social and economic development. The results indicated that the spatial characteristics of artificial transforming had strong relations with the economic activities in Fenggang Town.In 1988,when agricultural production was the main human impact of Fenggang landscape,the semivariagram of impact index was very low and in short ranges.In 1992 and 1994,both agricultural production and non argicultural land exploitation were equally important types of human disturbance,the semivariagram was high and in long ranges.Because the north south belt area were the main exploiting region,the semivariagram was anisotropic from 1986 to 1994,but when the east west new developing belt area began to be constructed from 1992,it became more and more isotropic.