研究目的:构建基于过程的耕地多功能评价指标体系,探究耕地各功能间相关关系,并以大兴区为例加以应用.研究方法:基于"指标—过程—功能—需求"理论框架,构建基于过程的耕地多功能评价指标体系,运用指数和法、内梅罗综合污染指数法以及有机碳密度方程进行定量化评价.研究结果:(1)大兴区耕地生产、缓冲过滤功能处于中等偏下水平;(2)健康功能有进一步恶化的趋势;(3)碳固持功能较弱,且空间分异较其他三种功能更为明显;(4)碳固持和健康功能呈现拮抗关系,其他各对功能间均有一定的协同关系.研究结论:基于过程的耕地多功能评价指标体系的是可行的.%The purpose of this paper is to construct a multi-functional evaluation index system for cultivated land based on the process, to explore the relationship among the cultivated land functions, and to apply it to Daxing District as an example. The methods including Nemerow index method, exponential sum method and soil organic carbon density equation are used based on the theoretical framework of "index-process-function-demand" to construct the multi-functional evaluation index system. The results are as follows: 1)the production function and buffering and filtration function of cultivated land in Daxing District were below the medium level. 2)The health function had a trend of further deterioration. 3)The carbon sequestration function was weak, and its spatial differentiation was more obvious than the other three functions. 4)The carbon sequestration function and the health function showed an antagonistic relationship, while the other pairs of functions had a certain degree of synergies. The conclusion is that the multi-functional evaluation index system of cultivated land constructed in this study is feasible.
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