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Study on the Contradiction between Population and Cultivated Land and the Priority Protection of Cultivated Land in the Policy of Poverty Alleviation: A Case Study of the Upper Reaches of Min River, Sichuan Province, China

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  • Li Chen

    (School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China
    College of Resources and Environmental Engineering, Mianyang Normal University, Mianyang 621000, China
    Ecological Security and Protection Key Laboratory of Sichuan Province, Mianyang Normal University, Mianyang 621000, China)

  • Qing Wang

    (School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China)

Abstract

The contradiction between population and cultivated land has always been an urgent global problem, and one that is particularly prominent in China. Based on the spatial–temporal evolution of cultivated land, this paper discusses the human–land contradiction and its development trend. Then, according to the threshold of human–land contradiction and different protection objectives, the priority protection area of cultivated land was simulated. The results showed that: (1) the cellular automata (CA)–Markov model is suitable for the study area. The cultivated land in the study area increased at a rate of 4.40 sq km per year; (2) the spatial and temporal change in the cultivated land in Songpan was the largest. The center of gravity of cultivated land is moving to the northeast, and the moving rate is increasing year on year; (3) 90% of the study area was in the human–land coordination and the change in the ratio of accumulation and cultivation in some areas (such as Songpan) is increasing, making the human–land contradiction worse; (4) under a protection target of 25–100%, the priority protection area of cultivated land increased from 2.05 × 10 3 km 2 to 3.46 × 10 3 km 2 , and the patch aggregation degree was strengthened. This study was of great significance for optimizing the distribution of cultivated land and promoting the sustainable development of land resources.

Suggested Citation

  • Li Chen & Qing Wang, 2021. "Study on the Contradiction between Population and Cultivated Land and the Priority Protection of Cultivated Land in the Policy of Poverty Alleviation: A Case Study of the Upper Reaches of Min River, S," Sustainability, MDPI, vol. 13(6), pages 1-19, March.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:6:p:3348-:d:519543
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    Cited by:

    1. Yajuan Wang & Xi Wu & Hongbo Zhu, 2022. "Spatio-Temporal Pattern and Spatial Disequilibrium of Cultivated Land Use Efficiency in China: An Empirical Study Based on 342 Prefecture-Level Cities," Land, MDPI, vol. 11(10), pages 1-15, October.
    2. Baoshu Wu & Meifang Liu & Yufei Wan & Zhenjiang Song, 2023. "Evolution and Coordination of Cultivated Land Multifunctionality in Poyang Lake Ecological Economic Zone," Sustainability, MDPI, vol. 15(6), pages 1-18, March.
    3. Quanhua Hou & Shihan Chen & Yitong Miao & Yahui Zhang & Su Chen & Xiaoyang Fan & Yaqiong Duan & Lingda Zhang, 2023. "Management and Control of Agricultural Production Space in the Yanhe River Basin Based on Peasant Household Behavior," Sustainability, MDPI, vol. 15(10), pages 1-20, May.

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