RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2015, Vol. 24 >> Issue (05): 750-757.doi: 10.11870/cjlyzyyhj201505006

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RESEARCH ON MULTI-SUITABILITY EVALUATION OF RESERVED LAND RESOURCES IN FANCHANG COUNTY

FANG Ting-ting, CHENG Jiu-miao, FEI Luo-cheng   

  1. College of Territorial Resources and Tourism, Anhui Normal University, Wuhu 241003, China
  • Received:2014-02-17 Revised:2014-05-21 Online:2015-05-20

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Abstract: Suitability evaluation of reserved land resources provides a scientific basis for reasonable exploitation and utilization of unused lands. It's also a foundation for effectively agricultural structure adjustment to reasonable suitability evaluation of reserved land resources. Suitability evaluation of reserved land resources plays an important role in many aspects. First of all, it can be used to ensure effective utilization of regional reserved land resources. Secondly, the regional ecological environment can be improved through suitability evaluation of reserved land resources. Thirdly, in the process of suitability evaluation of reserved land resources, the structure and layout of land use can be optimized. The purpose of this study is to provide reference for the policy decision making and management of subsequent land reclamation work. In this paper we took the whole unused lands in Fanchang County as the evaluating object. The reserved land resources were preliminary screening based on the consideration of the impact of regional natural and human factors on reserved land resources development. And on this basis a suitability evaluating indicator system was established, which included four aspects, i.e., terrian condition, soil condition, irrigation and drainage conditions, and locational conditions. A multi-suitability evaluation model of reserved land resources by introducing the niche-fitness method was constructed. The means of weighted average and limiting factor models were adopted to quantitatively analyze niche-fitness and restrictive factors for cultivated land, garden land and forest land. The result shows that the proportion of reserved land resources that could not be developed is 59.38%. The total area of reserved land resources that could be developed is 387.03 hm2, which has little influence on the ecological environment. The habitat conditions in Fanchang County are really suitable for different land use types. Suitability evaluation result of one land use type shows that the niche-fitness peak value in Fanchang County is reaching 0.966 5, and the suitability of cultivated land is the highest, which is at grade 1 and 2, accounting for 84.09%, garden land which is at grade 1 and 2 accounting for 72.46%, forest land which is at grade 1 and 2 accounting for 82.30%. In terms of niche-fitness evaluation, area of cultivated land ranks first, forest land comes next, and garden land is the last. Drainage condition, pH, and barrier layer depth are the primary niche factors which restrict the development and utilization of reserved land resources in the area. We concluded that, to improve the ecological niche of various land use types in the study area, and to improve the habitat conditions of reserved land resources development and utilization, in the future we should pay more attention to the land quality management, to strengthen the construction of irrigation and water conservancy facilities, and to make it suitable for the needs of the development and utilization.

Key words: niche-fitness, reserved land resources, multi-suitability GIS, Fanchang County

CLC Number: 

  • P964
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