Landscape changes of Minqin oasis in Gansu Province and its driving force

Abstract

Abstract: Based on the technology of GIS, RSand using FRAGSTATS, studies on the landscape changes of Minqin oasis during1987 to 2001 showed that the transitions of landscape patches were complex, and open up wasteland took place during1994 to 1998 in the south of the oasis where the condition of water was better and desertization took place during1998 to 2001 in the north of the oasis where the condition of water was worse.The decreasing of the Shannon's diversity index and the Shannon's evenness index and the increasing of Contagion index showed that human beings reconstructing the landscape of the oasis began stronger than before.Unreasonable land use was changed the landscape pattern, and the condition of water resource accelerated the landscape change.

Key words: Minqin oasis, Landscape change, Landscape index, Driving force, sediment, Beijing-Tianjin-Hebei, drinking water source, pollutants, speciation

CLC Number:

Q149

SONG Dongmei, XIAO Duning, ZHANG Zhicheng, CAO Yu, MA Mingguo, WANG Jianhua, WANG Jian. Landscape changes of Minqin oasis in Gansu Province and its driving force[J]. Chinese Journal of Applied Ecology, 2003, (4): 535-539.

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