近30年四平市土地利用时空变化及生态环境效应.doc

文档介绍：
近 30 年四平市土地利用时空变化及生态环
境效应#
李艾玉,刘吉平,于佳**
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(吉林师范大学旅游与地理科学学院,四平,136000)
摘要:以四平市为研究区域,利用 1980 年、1995 年和 2010 年的 Landsat TM 遥感影像解译
数据,基于 GIS 空间分析功能,根据土地利用状态转移矩阵对四平市土地利用动态变化进
行研究。结果表明,近 30 年四平市草地、沼泽地、盐碱地面积减少幅度最大,其次为林地
和水域面积,耕地面积增加明显。西部和东北部地区的土地利用的综合动态度变化速率快于
北部和东南地区。西部地区及东北部地区的土地利用类型的空间变化最大,并逐渐向中部地
区递减,北部和东南部地区的空间变化最小。土地利用对环境变化的影响主要包括大气环境
效应、土壤环境效应、水环境效应。
关键词:土地利用;动态变化;生态环境;四平市
中图分类号:
Analysis of dynamic changes and ecological environment of
land use in Siping city during last 30 years
Li Aiyu, Liu Jiping, Yu Jia
(College of Tourism and Geographical Science, Jilin Normal University, Siping City, 136000)
Abstract: This study was located in Siping city and based on Landsat TM images in 1980, 1995
and 2010. Land use patterns dynamic changes and distribution in Siping City were researched
using GIS spatial analysis method and using state transition matrix method. The results show that,
areas of grasslands, marshlands and saline-alkali lands decrease mostly, followed by forest and
water area. Cultivated lands are increased obviously. Comprehensive dynamic degree change rate
of land use in the western and northeast region is faster than the north and southeast region.
Spatial variation of land use type in the western northeast region changes mostly and gradually
decline to central region, spatial variation of land use type in