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[1]LIU Jing-qiang.Comparative Analysis on Spacial Expansion Characteristics in Keriya-Qerchen Oasis[J].Research of Soil and Water Conservation,2011,18(06):105-110.

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Comparative Analysis on Spacial Expansion Characteristics in Keriya-Qerchen Oasis

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 06 Page number: 105-110 Column: Public date: 2011-12-20

Title:: Comparative Analysis on Spacial Expansion Characteristics in Keriya-Qerchen Oasis

Author(s):: LIU Jing-qiang¹; 1. College of Resources and Environmental Science, Xinjiang University, Urumqi 830046, China;
2. Lab for Oasis Ecosystem, Xinjiang University, Urumqi 830046, China

Keywords:: Keriya-Qerchen oasis; spatial expansion; characteristic; contrast analysis

CLC:: F301.24

DOI:: -

Abstract:: According to the remote sensing images of 1970(MSS), 1990(TM), 2005(ETM) and 1950s topographic map of Keriya-Qerchen oasis as the main data sources, and based on ENVI software platform support, the classification maps and basic spacial information of study area were obtained throng cut, registration, interpretation, and classification processing of images. On this basis above, cultivated land change and oasis area and economic development of two oasis over the past 30 years under the influence of factors such as the characteristics of the dynamic change and expansion were analyzed. The results show that: the rim expansion, expansion characteristics along Qerchen of Keriya-Qerchen oasis are mainly ’jumps’ mode over the past 30 years. In Keriya oasis, river along the Keriya outer expansion, main feature of its expansion is ’booth bread type’ mode. Farmland change and the spacial change features of cultivated land oases are almost same, which are characterized as the trend of fluctuation regime of growth-decrease-growth state. In Keriya-Qerchen oasis, the proportion of primary industry is similar, increment and development speed of second and third industry in Keriya oasis are faster than those in Qerchen oasis. Analysis shows that oasis area, farmland change and economic development are promoting the expansion of oasis, but expansion of oasis caused the external desertification of oasis and internal salinization problem within oasis imultaneously, therefore, in order to prevent the degradation of comprehensive functions, the dynamic monitoring for oasis is imperative.

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