Shuitu baochi tongbao (Dec 2023)
Influencing Factors of Cultivated Land Spatial Protection Pattern and Countermeasures of Regulation Planning
Abstract
[Objective] Through analying the causes of the current spatial pattern of cultivated land protection and its spatial correlation, the scientific zoning of cultivated land renovation planning was divided to provide reference for further optimizing the layout of cultivated land, improving the quality of cultivated land, and scientific utilization and protection of cultivated land. [Methods] Taking Kongtong District, Pingliang City, Gansu Province as an example, landscape pattern index method, multi-objective decision-making method, Spreaman rank correlation method and cluster analysis method were used to analyze the synergistic or tradeoff relationship between the current situation of cultivated land landscape pattern and its spatial existence by selecting cultivated land slope, cultivated land protection policy and urbanization impact, and to construct the correlation analysis and evaluation index system of cultivated land protection pattern. [Results] ① As a whole, the cultivated land landscape pattern index of the study area increased by 3.55% from 2010 to 2022, and the degree of cultivated land agglomeration showed a downward trend in most regions, but it fluctuated during the whole process. The regional land use degree showed an upward trend on the whole, and the characteristics of cultivated land layout and land use degree of each township were significantly different. ② The cultivated land protection index in 2022 increased by 315.30% compared with 2010, the cultivated land on 2°—6° slope increased by 120.96%, the cultivated land on 15°—25° slope decreased by 32.64%, and the cultivated land in > 25° decreased by 100%, which was highly coordinated with the cultivated land landscape pattern in space. The urbanization impact index showed an upward trend, which increased by 25.17% from 2010 to 2022. The urbanization impact on cultivated land distribution increased, and there was a significant spatial balance between urbanization and cultivated land landscape pattern. ③ Four units of cultivated land renovation planning were divided as cultivated land quality improvement key area, cultivated land quality improvement general area, cultivated land new development potential area, cultivated land coordination protection area. [Conclusion] The distribution characteristics of cultivated land in Kongtong District of Pingliang City, Gansu Province are different among different towns, and the overall protection effect of cultivated land is obvious. The main factors affecting the spatial pattern of cultivated land in the study area are policy factors, the impact of urban development, farmers’ planting willingness and cultivated land protection awareness, etc.
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