2003—2018年瑞兴于地区土地利用景观格局时空演变及驱动因素

为了解近15年来瑞兴于地区土地利用景观格局时空变化特征及其驱动因素,基于4期遥感影像,结合RS和GIS技术,运用土地利用动态度、土地利用转移矩阵、景观格局指数等分析了瑞兴于地区土地利用、景观格局时空演变特征,选取11项社会经济因素进行主成分分析并结合相关统计信息及政策法规分析其驱动因素。结果表明:林地是瑞兴于地区最主要的土地利用类型,约占研究区域总面积的70%,2003—2018年建设用地呈持续增加趋势,而耕地则呈持续减少趋势,草地和水域处于波动状态; 类型转换以林地与草地、草地与耕地、耕地与建设用地之间的相互转换为主,耕地是建设用地最主要的转入源; 研究区内景观破碎化程度降低,优势性提高,整体多样性及均衡性略有提高,研究区内景观类型区域均衡化、多样化发展。瑞兴于地区土地利用景观格局变化在一定程度上受到地形地貌因素的影响,主要驱动因素为经济发展、人口增加、产业结构调整以及相关政策法规的实施。

Spatiotemporal Evolution of Landscape Pattern of Land Use and Its Driving Factors in Ruijin-Xingguo-Yudu Region from 2003 to 2018

In order to understand the spatiotemporal change characteristics and driving factors of landscape pattern of land use in Ruijin-Xingguo-Yudu Reigion in the past 15 years, based on the 4 phases of remote sensing images, RS and GIS technology, land use dynamics, land use transfer matrix, landscape pattern index were use to analyze the spatiotemporal evolution characteristics of land use and landscape pattern in Ruijin-Xingguo-Yudu Reigion, and 11 socio-economic factors for principal component analysis were selected to analyze their driving factors by combining with relevant statistical information and policies and regulations. The results show that forest land was the most important land use type in Ruijin-Xingguo-Yudu region, and accounted for about 69% of the total area of the study area. From 2003 to 2008, construction land had a continuous increase trend, while cultivated land had a continuous decrease trend, and grassland and waters were in a state of fluctuation. Type conversion was dominated by the mutual conversion between forest land and grassland, grassland and cultivated land, cultivated land and construction land. Cultivated land was the main source of conversion of construction land. The degree of fragmentation of the landscape in the study area was reduced, the advantages were improved, the overall diversity and balance were slightly improved, and the landscape types in the study area were balanced and diversified. The changes in the landscape pattern of land use in Ruijin-Xingguo-Yudu Region were affected to a certain extent by topography and geomorphology. The main driving factors are economic development, population growth, industrial structure adjustment, and the implementation of relevant policies and regulations.