基于RS和GIS的滁州市土地利用与景观格局变化

Changes of land use and landscape pattern in Chuzhou City based on RS and GIS

人类社会经济的发展对土地利用和景观格局会产生重要的影响。以2000年、2005年、2010年和2015年4期TM遥感影像数据为基础,借助RS和GIS技术对滁州市土地利用与景观格局的变化进行分析。研究结果表明:滁州市土地类型主要为耕地、林地、居民用地和水域,草地和未利用地面积相对较小。2000—2015滁州市土地利用变化表现为耕地面积减少,林地、居民用地和水域面积增加,草地和未利用地面积相对稳定。变化过程主要是耕地转化为居民用地和林地。景观格局分析表明滁州市景观的斑块密度、形状指数、香农多样性指数和均匀度指数不断增加,景观的破碎化程度提高,异质性增强。滁州市土地利用和景观格局变化有不断加剧的趋势,城市化和退耕还林是滁州市土地利用和景观格局变化的主要因素。

The development of human society and economy will have an important impact on land use and landscape pattern.Based on the TM remote sensing data of 2000,2005,2010 and 2015,the changes of land use and landscape pattern of Chuzhou City are analyzed by using RS and GIS technology.The research result shows that:Land use of Chuzhou is mainly cultivated land,forest land,residential land and water area.Grassland and unused land areas are relatively small.From 2000 to 2015,the land use change in Chuzhou City was manifested as the decrease of cultivated land area,the increase of forest land,residential land and water area,and the relatively stable change of grassland and unused land area.The change process is mainly from cultivated land to residential land and woodland.Landscape pattern analysis shows that patch density,shape index,shannon diversity index and evenness index of landscape of Chuzhou are increasing,landscape fragmentation degree is improving and heterogeneity is increasing.The change of land use and landscape pattern of Chuzhou City has a tendency of intensifying.Urbanization and returning farmland to forest are the main factors of land use and landscape pattern change of Chuzhou City.