中南丘陵区不同土壤类型下的土地利用景观格局分析

应用RS,GIS,Fragstats软件研究了醴陵市土壤类型和景观格局、景观指数的关系。结果表明:(1)醴陵市主要土壤类型是红壤和水稻土;景观类型以林地和水田为主,各景观分布的主要土壤类型为红壤与水稻土,景观斑块类型在各土壤类型区存在明显差异;(2)土地利用景观多样性指数和均匀度为:紫色土>水稻土>红壤>河潮土>黄壤,优势度则相反;(3)各土壤类型区形状指数变化很小,分维数一致;(4)各土壤类型区的廊道密度指数为:紫色土>水稻土>河潮土>红壤>黄壤,差异较大。

Research on the Land Use Landscape Pattern of Different Soil Types in Central-south Hilly Area

By using the softwares of RS,GIS and Fragstats,the relationship between soil type and landscape pattern,landscape indices in Liling City was studied.The result showed that:(1) the major soil types in Liling City were red soil and paddy soil,and landscape types were dominated by wood land and paddy field.There were obvious differences in landscape patch types in the different soil types;(2) landscape diversity index and evenness of land use were as the order of purple soil area>paddy soil area>red soil area>river alluvial soil area>yellow soil area,while dominance was opposite;(3) the shape index changed slightly in each soil type area,and the fractal dimension was basically same;(4) the corridor density index was quite different,it was expressed as purple soil area>paddy soil area>river alluvial area area>red soil area>yellow soil area.