洞庭湖区景观格局变化及驱动力研究——以钱粮湖单退垸为例  

Landscape pattern changes and driving forces in Dongting Lake region——the case of Qianlianghu single restoration polder

作　　者：漆良华 王月容[2] 

机构地区：[1]国际竹藤中心,北京100102 [2]北京市园林科学研究所,北京10010

出　　处：《华中农业大学学报》2013年第4期55-60,共6页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金项目(41071334);"十二五"科技支撑项目(2012BAD23B04)

摘　　要：基于洞庭湖1987、1996、2008年三期LANDSAT-TM影像及1∶10 000土地利用现状图,以钱粮湖单退垸为例,应用GIS技术及FRAGSTATS景观分析软件,从斑块类型和景观水平上分析了其近20多年来的景观格局动态变化,通过建立转移矩阵及计算转移贡献率,分析了景观格局变化的驱动力。结果表明:1987-2008年间,湖区景观要素类型发生了明显变化,总体上表现为旱地和园地面积持续减少,水域、水田、道路和建筑用地面积持续增加,林地面积先减后增;景观格局总体变化趋势是多样性增加、均匀度增加、破碎度增大、景观形状由简单趋于复杂;人口增长与城镇化建设、产业结构调整、退田还湖工程实施是导致研究区景观格局动态变化的三大驱动力。Based on the LANDSAT-TM images in 1987,1996 and 2008 years and the present land use maps（1∶10 000） of Qianlianghu polder in Dongting Lake region and by applying to GIS technologies and FRAGSTATS analyzing software,landscape pattern dynamic changes of Qianlianghu polder were analyzed on the patch type and landscape scales,and its driving forces were further analyzed through establishing the transfer matrixes and calculating transfer contribution rates in last more than 20 years.The results showed that landscape element types changed significantly in Dongting Lake region from 1987 to 2008,which were proofed wholly by area continuous decreasing in the types of dry land and garden plot,area continuous increasing in the types of water,paddy field,road and building land,and for the woodland area were firstly decreased and then increased.The overall changing trends in landscape patterns of Qianlianghu polder were increased in diversity,evenness,and degree of fragmentation,and became complexity in the shapes of landscape.The three main driving forces for landscape pattern changing were population increase and urbanization construction,industrial structure adjustment,together with the project implement of converting polders back into wetlands.

关 键 词：钱粮湖垸 景观格局 驱动力 退田还湖 

分 类 号：X171.4[环境科学与工程—环境科学]