干旱区农业绿洲景观格局研究

Abstract

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.

Key words: agricultural oasis, landscape pattern, landscape index, FRAGSTATS, GIS

CLC Number:

S181

JIAO Yuan-Mei, MA Ming-Guo, XIAO Du-Ning, CHENG Guo-Dong. Landscape patterns of agricultural oases in arid region[J]. Journal of Ecology and Rural Environment, 2003, 19(1): 22-26.

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Landscape patterns of agricultural oases in arid region

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