Dynamics of ecological landscape pattern and its affecting factors in desert-oasis in Fukang,Xinjiang

Abstract

Abstract: The spatial pattern of ecological landscape during land utilization in Fukang is heavily influenced by natural difference and the scale of water and land resource development.Analyses on the spatial pattern based on different zones and indexes showed that from 1987 to 1998,the change of the spatial pattern of ecological landscape during land utilization in Fukang was mainly the increase of plantation area in pluvial fan and the decrease in alluvial plain.The case was on the contrary about badlands.The acreage of woodland decreased in lower mountains,uplands and alluvial plain,but no variety in alluvial plain.The acreage of grassland increased in lower mountains and uplands,while decreased in other fields.The acreage of town increased in each sample field,while that of water area remained uncharged.The landscape diversity and evenness was descending,the dominance was ascending in lower mountains and in pluvial fan,while it was reverse in alluvial plain.Accessorial fragmentation showed the increasing influence of human beings.The change of the spatial pattern of ecological landscape in Fukang focused on the acreage alteration of plantation and badlands in pluvial fan and alluvial plain. The key factor was the dynamic variation of water-salt in water and soil resource utilization.Terrain and land utilization were the key factors affecting water table,and the continuous changes of the water table worked on the spatial distribution of soil water-salt.

Key words: Landscape pattern, Desert oasis, Fukang, Land utilization

CLC Number:

P941.73
Q149

LIU Xinchun, ZHANG Yuandong, REN Guangyao, PAN Xiaoling, HE Qing. Dynamics of ecological landscape pattern and its affecting factors in desert-oasis in Fukang,Xinjiang[J]. Chinese Journal of Applied Ecology, 2004, (7): 1197-1202.

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