Analysis of Cultivated Land Based on Water Resources Regionalization and Geomorphologic Characteristics in Xinjiang, China

  • 1. State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Xinjiang Institute of Ecology and Geography, CAS, Urumqi 830011, China

Received date: 2011-11-04

  Revised date: 2012-03-04

  Online published: 2012-11-20


Based on the method and technology of geographic information system (GIS) and statistical analysis, this paper quantitatively analyzes the spatial and temporal distribution and change characteristics of the cultivated land resources from 1995 to 2008 in Xinjiang. The dataset used includes land use data, water resources regionalization, and SRTM-DEM with a horizontal resolution of 90 m.
This paper firstly calculates the quantities and variation of cultivated land area in different periods in order to reflect the distribution and change characteristics of the cultivated land within 26 water resources regions possessed cultivated land area. The results show that: 1) The spatial distribution of cultivated land of every region in different periods slightly changed, and the whole pattern of cultivated land remained unchanged; the area of cultivated land of every region is increased or reduced, but the total area of all regions represents the trend of continuous growth from 1995 to 2008, the increased value is 126.39×104 hm2. And the increased rate of cultivated land in three periods is different, especially it is the highest from 2000 to 2005. 2) Through comparing the quantities, variation, rising and falling numerical differences of cultivated land of 26 water resources regions in different stages, variation mode of cultivated land can be grouped into four categories, namely the rising class, firstly falling-then rising class, firstly rising-then falling, rising-falling fluctuation class. 3)There are regional differences in the cultivated land change among water resources regions in Xinjiang. The Yarkand River Basin possesses the highest increased area of cultivated land from 1995 to 2008, the value is 17.36×104 hm2. And the area reduction of Emin River Basin is higher than other regions; the area of cultivated land reduced 3.15×104 hm2. 4) The cultivated land resources are distributed in low and middle elevation regions below the 2000 m, among which the most widely distributed is in 500-2000 m regions. The biggest change is observed in regions whose elevation is below 1500 m. The cultivated land area is increased both in plain terrain and hilly region, the new additional cultivated land is mainly distributed in plain landform. The piedmont plain area of fluvial landform types is mainly cultivated land resources from landform genetic types in Xinjiang.
There are observably spatial differences of the cultivated land in Xinjiang. The reclamation and desolation of the land become the main and marked characteristics in Xinjiang. Consequently, it is necessary to effectively control the reclamation speed of cultivated land in Xinjiang. To ensure that food safety, the decision maker in Xinjiang should consider how to stand out the local distinguishing feature and realize the sustainable development of oasis agricultural economy. The farmland distribution on the basis of local watershed water resources and geomorphologic characteristic should be reasonably planned.

Cite this article

CHENG Wei-ming, CHAI Hui-xia, FANG Yue, ZHOU Cheng-hu, TIAN Chang-yan, WU Shi-xin, TANG Qi-cheng . Analysis of Cultivated Land Based on Water Resources Regionalization and Geomorphologic Characteristics in Xinjiang, China[J]. JOURNAL OF NATURAL RESOURCES, 2012 , 27(11) : 1809 -1822 . DOI: 10.11849/zrzyxb.2012.11.001


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