湖南省南县土地利用动态变化研究

土地利用变化是区域变化的重要组成部分,是短时期内人类活动对自然环境改造的显著表现形式.随着人口持续增长和社会经济的快速发展,南县土地利用发生了较大变化.以土地统计资料为依据,对南县1983-2003年的土地利用变化过程进行了全面分析.结果表明:土地利用结构发生了明显变化;土地利用变化速度较快;土地利用程度较高,土地利用处于调整期;人类活动对景观格局有较为明显的影响.

A Study of Land Use Change in Nanxian County of Hunan Province

Change in land use is a major part of regional change and an obvious manifestation of human activities transforming natural environment in a short period.Taking Nanxian County,Hunan Province,as an example,this paper analyzes the temporal and spatial characteristics of land use change according to the data from 1983 to 2003,arriving at the following conclusions:(1)the cultivated land and water areas account for more than 85 percent of the total land area of Nanxian County,and the rate of land use and cultivation was high;(2)evident change has taken place in the land use structure;(3)in the 20-year period,land use change was very fast,the land use intensity was relatively high,and the human activity has an obvious influence on landscape pattern.