水土保持研究2017，Vol.24Issue(3)：246-252,7.
南四湖流域土地利用及其景观格局变化分析
Analysis on Landscape Pattern Change and Land Use in Nansi Lake Basin
摘要
Abstract
Based on three sets of Landsat data (1987,2000 and 2014),the land use information was extracted by using the software of ENVI,ArcGIS.The landscape indexes were figured out by analyzing the attribute data of the landscape classification map with the Fragstats software.The land use change and its impact on the landscape pattern were quantitatively analyzed in the Nansi Lake Basin.The results show that:(1) during the 30 years,the change of the land use in Nansi Lake Basin performed distinctly for the transformation of farmland to construction land.The areas of farmland decreased by 1 069.15 km2 and construction land increased by 1 573.26 km2.The comprehensive land use dynamic degree was 0.461％ from 2000 to 2014,which is 4 times of that from 1987 to 2000;(2) on the landscape structure,farmland,as a dominated patch in basin,accounted for about 70％,percentage of landscape is reduced by 3.85 ％,and shape was complicated in 30 years;construction land was developed increasingly as an advantage patch,of which percentage of landscape was increased by 6.1％;the changes of farmland and construction land patches in landscape made the natural ecological function suffer more severe disturbance in basin;(3) the whole basin landscape was relatively integrated and the dominant patches were obvious,however,the spatial heterogeneity was higher and landscape connectivity was low.In the recent 30 years,the landscape structure dominated by relatively complete large patches,evolved into the pattern of the small circle patch perforated in large patches,and the landscape fragmentation was relatively severe.关键词
土地利用变化/景观格局/城市化/南四湖流域Key words
land use change/landscape pattern/urbanization/Nansi lake basin分类
管理科学引用本文复制引用
孟瑶瑶,薛丽芳..南四湖流域土地利用及其景观格局变化分析[J].水土保持研究,2017,24(3):246-252,7.基金项目
国家自然科学基金“面向流域的城市化水文效应与城市可持续发展”(41201166) （41201166）
江苏高校优势学科建设工程项目 （）
国家级大学生创新训练项目(201510290045) （201510290045）
