Oasis corridor landscape in arid regions:A case study of Jinta Oasis

Abstract

Abstract: In arid region oasis, the main corridor landscape types include river, ditch, shelterbelt and road. This paper introduced their basic ecological effects on transporting mass and energy and on obstructing desert landscape expansion and incursion. Using Geographic Information System (GIS), the corridor distribution and its spatial relationship with other landscape types in the Jinta Oasis were analyzed. Based on the dynamically monitoring on the landscape pattern change of the Jinta Oasis during the latter 10 years, the driving functions of the corridors on this change were analyzed in detail. The results showed that all kinds of corridors' characteristics could be quantified by the indexes such as length and width, ratio of parameter and area, density,and non heterogeneity. The total corridor length of Jinta Oasis is 1838.5 kilometers and its density is 2.1 km穔m^-2 .The corridor density of the irrigated land, forest and resident area is maximal,showing that the affection degree of the oasis corridors on them is the most. The improvement of the corridor quality is one of the important driving factors on the irrigated land.

Key words: Arid regions, Oasis, Corridor landscape

CLC Number:

Q149

MA Mingguo, CAO Yu, CHENG Guodong . Oasis corridor landscape in arid regions:A case study of Jinta Oasis[J]. Chinese Journal of Applied Ecology, 2002, (12): 1624-1628.

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