河南农业大学学报2017，Vol.51Issue(1)：101-107,119,8.
北江干流河岸缓冲带景观格局的梯度效应分析
Gradient effect analysis for landscape pattern of the Beijiang River riparian buffer zone
摘要
Abstract
Based on three sets of TM images (2000,2005 and 2010),GIS and RS techniques,we studied the characteristics of landscape pattern and its gradient effect within 10 km buffer zone along the Beijiang River using the method of buffer analysis.The results showed that in the period of 2000 ～ 2010,forest land was the landscape matrix of the study area,followed by cultivated land and water ar ea.Cultivated land,grass land and shrub land presented the tendency of decreasing,while the construction land and unused land presented the tendency of creasing;forest land and water area decreased first and then increased.In terms of landscape types,the complexity of different kinds of landscape declined,while connectivity was in adverse.Fragmentation increased first and then decreased.At the landscape scale,values of the largest patch index (LPI) and COHESION showed distinctive peaks because water area occupied dominant position within 1 km buffer zone and the landscape type was simple.Landscape shape index (LSI) increased with the increasing width of the buffer zone,while the aggregation index (AI) presented a completely reverse tendency.关键词
河岸缓冲带/景观格局/梯度效应/北江流域Key words
riparian buffer zone/landscape pattern/gradient effect/Beijiang River basin分类
天文与地球科学引用本文复制引用
徐珊珊,赵清贺,吴长松,曹梓豪..北江干流河岸缓冲带景观格局的梯度效应分析[J].河南农业大学学报,2017,51(1):101-107,119,8.基金项目
国家自然科学基金项目(41301197) （41301197）
中国博士后科学基金资助项目(2015T80766,2014M550382) （2015T80766,2014M550382）
河南省高校科技创新团队支持计划“农业资源开发与可持续利用”(1bIRTSTHN12) （1bIRTSTHN12）
广东省省级科技计划项目(2013B030700003,2014A020216026) （2013B030700003,2014A020216026）
