【摘要】 将地理信息系统 (GIS)与景观格局分析软件FRAGSTATS相结合 ,选取了 9个斑块类型指标和 13个景观指标 ,从区域和绿洲 2个尺度分析了金塔县及其境内的金塔农业绿洲和鼎新农业绿洲的景观格局。结果显示 ,区域尺度的景观格局体现了绿洲与戈壁等基质类型景观的镶嵌特征 ;金塔农业绿洲体现出冲、洪积三角洲的特征 ,即耕地从扇顶呈放射状与盐碱地相间分布 ;鼎新农业绿洲显示了沿河绿洲的特点 ,即景观类型以河道为轴对称分布。指出划定绿洲界限和提高数据分辨率是揭示绿洲景观格局与过程相互作用机制的关键更多还原

【Abstract】 To analyze landscape patterns of Jinta County and the Jinta oasis and Dingxin oasis therein from the angle of the region and the oasis,nine patch-type indexes and thirteen landscape indexes were selected and GIS and FRAGSTATS were applied in combination.Results of the analysis showed that the landscape pattern on the regional scale reflected the feature of mosaic of substrate landscapes of Gobi and oasis.The Jinta oasis was a type of alluvio-diluvial delta,which featured farmlands distributed alternately with saline-alkaline lands in the pattern of a radiating fan while the Dingxin oasis showed the features of a riverside oasis distributed alongside the river symmetrically.Demarcation of oases and higher data distinguishability are the key to exposing the mechanism of interactions between oasis landscape patterns and their processes.更多还原