Journal of Jishou University(Natural Sciences Edition) ›› 2020, Vol. 41 ›› Issue (6): 70-73.DOI: 10.13438/j.cnki.jdzk.2020.06.013

• Characteristic column:Study on Wuling Mountain Area • Previous Articles     Next Articles

Prediction of Cultivated Land Quantity in Yongding District, Zhangjiajie

CHEN Ming, XIE Huan, PENG Xinzhu, ZHOU Yajin, TAN Yunxian, ZHUANG Dachun   

  1. (1. School of Geographical Sciences, Fujian Normal University, Fuzhou 350000, China; 2. School of Civil Engineering and Architecture, Jishou University, Zhangjiajie 427000, Hunan China; 3. School of Environmental Science, Hunan Normal University and Environmental Science, Changsha 410000, China; 4. Hunan Geological Survey and Mapping Institute, Hengyang 421000, Hunan China)
  • Online:2020-11-25 Published:2021-02-04

Abstract: Taking Yongding District, Zhangjiajie as an example, based on the analysis of the current characteristics of  cultivated land utilization and the dynamic changes, the paper defines  three objectives of reserving  cultivated land, namely food security, economic security and ecological security. Using the methods of food security method, supply-demand balance and trend extrapolation method to predict the prospective cultivated land quantity under the single target restriction in 2020,2030 and 2035, the Analytic Hierarchy Process (AHP) is used to assign the weights of the prediction results, and a multi-objective combined model is established. The total cultivated land tenure in Yongding District in 2020,2030 and 2035 is 30 423.35,29 515.76,29 321.66 8hm respectively. This indicates that the overall trend of reduction of cultivated land  is decreasing.

Key words: county, cultivated land reserved, target constraint mechanism

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