【摘要】 以内蒙古库布齐沙漠东北部的农牧交错区为研究区,采用1987、1995和2003年的TM影像为数据源,在3S技术的支持下分析了各时期农田景观格局特征及1987-1995、1995-2003两个时间段内的农田与其它景观类型之间的相互转移过程。结果表明:1987~2003年间,农田面积增加,斑块数量减少,斑块形状规则,分布趋向于均匀,并由分散状态向集中状态发展;农田主要是与草甸、固定沙丘、半固定沙丘和居民地等类型之间进行转化。更多还原

【Abstract】 This study area is located in the northeast of Hobq desert,in Agri-Grazing-Ecotone.The Land-sat TM images of 1987,1995 and 2003 were interpreted based on 3S software(Arcview3.2,Erdas8.6 and Arcgis9.0).It analyzed the dynamics of crop-landscape by comparing patterns of crop-landscape in 1987,1995 and 2003.The progresses of land-use changing between crop-landscape and other types were analyzed by using convection matrixes from 1987 to 1995 and 1995 to 2003.The results showed that: from 1987 to 2003,the area of cropland increased,its patch number decreased,the cropland patches becoming uniform distribution,and their shape is regular,and it transformed from dispersion state to concentration state.Cropland mainly converted with meadow,fixed sand-dune,semi-fixed sand-dune and habitation.更多还原