苏南典型城镇耕地景观动态变化及其影响因素  

Changes of paddy field landscape and its influence factors in a typical town of south Jiangsu Province

作　　者：周锐[1,2] 胡远满[2] 苏海龙[1,3] 李月辉[2] 许博涵[1] 武占云[1] 张凤娥[1] 

机构地区：[1]复旦大学城市规划与发展研究中心,上海200433 [2]中国科学院沈阳应用生态研究所,沈阳110016 [3]复旦大学环境科学与工程系,上海200433

出　　处：《生态学报》2011年第20期5937-5945,共9页Acta Ecologica Sinica

基　　金：国家科技支撑计划资助项目(2006BAJ10B05);国家自然科学基金资助项目(50808048;40871245)

摘　　要：基于高分辨率遥感影像获得3期土地利用数据,引入景观动态度和缩减强度指数分析了辛庄镇各村水田景观减少的速度和强度;利用转移矩阵和GIS地图叠加方法分析了辛庄镇水田景观变化的时空特征;应用冗余分析方法,直观地展现了主要的水田转变方式与各影响因子的定量关系。结果表明:1991—2009年间,研究区水田景观面积比例减少了30.5%,且呈加速下降趋势;各村水田景观缩减的规模、速度和强度差异明显;减少的水田主要被工业用地、鱼塘和居住用地占用,且这种现象集中发生在主要道路与河流周围。社会经济因子和区位因子对水田变化的空间差异具有很好的解释作用,且各因子对解释不同时段水田变化的空间分异的贡献率差异显著。Cultivated land is the most precious treasure in land resources.It is the foundation of human′s survival and development,and the guarantee of food and ecological security in regional level.The protection of agricultural land is now the core issue in the strategy of sustainable development among countries,and regarded as the national policy of China.Nevertheless,the national policy and its strategies did not effectively prevent the agricultural land from huge loss in recent years,and the phenomenon is significantly worse in south Jiangsu Province which experiences the most rapid industrialization across China.As time goes by with the acceleration of urbanization and industrialization,considerable amount of cultivated land resource has been consumed with the deteriorated ecological environment and the fragmented landscape.Thus summarizing the spatio-temporal change characteristics and identifying the main direction and impact factors of cultivated land loss in longitudinal study of the land use change in south Jiangsu Province would have crucial meaning for enhancing the sustainable development of regional Socio-economy and eco-environment. Based on three periods land-use historical data extracted from high-resolution remote sensing images of Xinzhuang Town in south Jiangsu Province,integrated with GIS spatial analysis and statistical method,we selected landscape dynamic degree and shrinking intensity index to analyze the decreasing speed and intensity of paddy field in each village,utilized transfer matrix and GIS map overlay to analyze the spatio-temporal characteristics of paddy landscape change,and took advantage of redundancy analysis to directly clarify the correlation between environmental variables（Socio-economic and neighborhood factors） and the major paddy-related land use transformation.The results showed that 30.5% of the total paddy field lost during 1991—2009 in Xinzhuang Town,with an accelerated decreasing trend;the losing size,speed and intensity of paddy field of different village varied co

关 键 词：水田 GIS 景观变化 冗余分析 苏南 

分 类 号：P901[天文地球—自然地理学]