Construction of evaluation system and classification of unstable farmland in arid area of Bachu County

doi:10.14088/j.cnki.issn0439-8114.2025.02.005

Abstract

Abstract: Bachu County was taken as the case area. Based on relevant criteria such as cultivated land reserve resource evaluation, quality evaluation of newly added cultivated land and high standard farmland, an index system of unstable cultivated land evaluation was constructed by following the principles of comprehensiveness, hierarchy, representativeness and accessibility. The types of unstable cultivated land were divided by spatial overlay analysis of ArcGIS10.8 software. The results showed that the unstable cultivated land in Bachu County was mainly affected by 13 factors in three aspects of ecological security, production suitability and socio-economic feasibility. The unstable cultivated land in Bachu County was 34 827.64 hm², accounting for 24.15% of the cultivated land area, which was concentrated in the southwest and central part of Bachu County. Unstable cultivated land in Bachu County was divided into production unstable type, ecological unstable type, social and economic unstable type and mixed unstable type, accounting for 1.50%, 81.70%, 14.82% and 1.98% of the total area of unstable cultivated land, respectively. Bachu County had a large area of unstable cultivated land, which was mainly affected by salinization and desertification. The stability of cultivated land could be enhanced by improving irrigation and drainage system and farmland infrastructure, and strengthening the construction of shelter forest and high standard farmland.

Key words: unstable cultivated land, arid area, evaluation indicators, classification system, food security, ecological environment, Bachu County

CLC Number:

F323.211

SUN Ting-ting, YANG Zhi-ying, LUO Hao, JIA Hong-tao, SHAN Na-na. Construction of evaluation system and classification of unstable farmland in arid area of Bachu County[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(2): 27-36.

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