Research on Cultivated Land Layout Evaluation Method Based on"PLUS-FAHP-FCE"Model—Taking Heyuan City,Guangdong Province as an Example
[Objective]In order to enrich and improve the evaluation index system for optimizing farmland layout.[Method]Based on the needs of realizing the dynamic balance of total cultivated land,improving the contiguity of cultivated land,improving the soil fertility of cultivat-ed land,promoting sustainable use,and enhancing the stress resistance and buffering of cultivated land ecosystem,this paper proposes to con-struct a framework for the construction of cultivated land layout evaluation index system based on"goal-demand-dimension-index",taking Heyuan City as an example,and simulating three land use simulation scenarios of Heyuan City,including inertial development,cultivated land protection and ecological priority,through the PLUS model method.Focusing on the four dimensions of quantity,layout,quality and ecology,a total of 11 individual indicators were selected to construct the cultivated land layout evaluation index system in Heyuan City,and the FAHP a-nalysis method was used to determine the weight of each evaluation index,and the FCE evaluation was carried out according to the determined cultivated land layout evaluation index system,and the cultivated land layout effect score was obtained.[Result]Heyuan City has the highest FCE score in the cultivated land protection simulation scenario,which shows that the spatial distribution of cultivated land in the region is fur-ther agglomeration,most of the forest land with a slope of less than 15° has evolved into cultivated land,and most of the cultivated land above 25° has evolved into forest land,and the biodiversity and carbon storage have generally shown a downward trend.The FCE score of the ecologi-cal protection scenario was the second,and the spatial agglomeration degree of cultivated land was lower than that of the cultivated land protec-tion scenario,and the overall upward trend of biodiversity and carbon storage was high.In the cultivated land layout index of Heyuan City,the quantity dimension is negatively correlated with the ecological dimension.The cultivated land protection scenario effectively constrains the ex-pansion of construction land,and the ecological land such as forest land and water area(including unused land)increases significantly in the ecological priority scenario.[Conclusion]The cultivated land layout evaluation method based on"PLUS-FAHP-FCE"is feasible.
Cultivated land layout evaluationPLUS-FAHP-FCELand useHeyuan City
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