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Spatial Analysis of Cultivated Land Productivity, Site Condition and Cultivated Land Health at County Scale

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  • Fengqiang Wu

    (School of Environment and Resource, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang 621010, China
    Tianfu Institute of Research and Innovation, Southwest University of Science and Technology, Zizhou Avenue Road, Chengdu 610213, China)

  • Caijian Mo

    (School of Environment and Resource, Southwest University of Science and Technology, 59 Qinglong Road, Mianyang 621010, China
    Mianyang S&T City Division, National Remote Sensing Center of China, 125 Biyun Road, Mianyang 621002, China)

  • Xiaojun Dai

    (School of Civil Engineering and Geomatics, Southwest Petroleum University, 8 Xindu Road, Chengdu 610500, China)

  • Hongmei Li

    (Mianyang Natural Resources Bureau and Municipal Planning, No. 2, Yunquan South Street, Mianyang 621000, China)

Abstract

Cultivated land is a fundamental factor related to the social stability and sustainable development of the whole country. However, the safety of quantity and quality of cultivated land has decreased year by year, resulting in great challenges to the sustainable development of cultivated land. Cultivated land productivity, site conditions, and soil health jointly determine the sustainable development potential of cultivated land. Analyzing and calculating the coupling and cooperative relationship between these three subsystems can provide a theoretical and methodological reference for protecting and zoning cultivated land resources. Using Jiangyou City as a case study, this paper constructs a coupling coordination degree model of cultivated land productivity, site conditions, and soil health assessment systems in different geomorphic regions, and comprehensively analyzes the level of sustainable development of cultivated land in the study area. The results show that there are differences in the development potential of cultivated land resources in the mountainous regions in the north, the hilly regions in the center, and the plain regions in the south of Jiangyou City. The coupling coordination index of the three regions were calculated as 0.34, 0.51, and 0.63, respectively, for which the overall average coupling coordination index is 0.57; notably, it only reaches the “barely coordination” level. Based on our analysis results, the cultivated lands in Jiangyou City are classified into the following zones: core protection zone, dominant remediation zone, and key regulation zone. The cultivated land located in the core protection zone has a high coupling coordination index, which can be used as the preferred area for the delimitation of high standard basic farmland and permanent basic farmland. For the cultivated land located in the dominant remediation zone, the development of its subsystems is unbalanced. Comprehensive land improvement projects can be carried out in this zone to improve the overall quality. For the cultivated land located in the key regulation zone, it is recommended to implement projects such as returning farmland to forests to improve land use efficiency. In particular, the evaluation index system constructed in this paper is sufficiently representative, as it can support the classification, quality improvement, and sustainable use of cultivated land. Thus, other similar countries and regions can learn from the evaluation system constructed in this paper.

Suggested Citation

  • Fengqiang Wu & Caijian Mo & Xiaojun Dai & Hongmei Li, 2022. "Spatial Analysis of Cultivated Land Productivity, Site Condition and Cultivated Land Health at County Scale," IJERPH, MDPI, vol. 19(19), pages 1-20, September.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:19:p:12266-:d:926672
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    References listed on IDEAS

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