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基于粮食生产服务“供—需—流”的河南省沿黄区域耕地生态补偿研究

Ecological Compensation for Cultivated Land in Yellow River Basin of Henan Province Based on Supply-Demand-Flow of Food Production Services

  • 摘要: 粮食生产服务作为生态系统供给服务的重要组成部分,直接关系到全球人口生存安全与社会稳定。基于静态视角的粮食生产研究虽揭示了区域粮食供需矛盾,但忽视了粮食生产服务的流动性,制约了粮食生产服务可持续发展策略及耕地生态补偿政策的有效制定。以河南省沿黄区域为研究对象,量化2023年粮食生产服务的供需水平,以县域为粮食生产服务的最小流动单元,通过生态辐射力模型模拟粮食生产服务的流动过程,识别研究区内粮食生产服务流中具备重要供给功能的节点,并基于县域间粮食生产服务流隐含的耕地流动,定量计算耕地生态补偿标准。结果表明:(1)河南省沿黄区域粮食供需空间错配,粮食高供给区集中于豫北与豫东平原地区,而粮食高需求区以郑州、洛阳、新乡市中心区等人口聚集地为中心呈点状辐射式,粮食生产服务供需耦合协调度以勉强协调为主。(2)2023年河南省沿黄区域粮食生产服务流流动线路共115条,流动总量达120.18万t,且流动主要集中于人口密集的城区及其周边区域。(3)武陟县、巩义市和新乡县等节点县域,承担的粮食流动次数均超过4次,这些节点县域是保障区域粮食流动效率的核心枢纽。(4)研究区共有22个县域在粮食生产服务流中获益,需向35个粮食生产服务流供给县域支付耕地生态补偿金额共14.17亿元,其中郑州市(7.45亿元)、洛阳市(3.34亿元)的支付额占比突出。研究结果可为黄河流域粮食安全保障、耕地保护政策制定及生态系统服务优化提供科学支撑。

     

    Abstract: As an important component of ecosystem supply services, food production services are directly related to the survival security and social stability of the global population. Although static food production research reveals the contradiction between regional food supply and demand, it ignores the mobility of food production services, which limits the effective formulation of sustainable development strategies for food production services and ecological compensation policies for arable land. This paper takes the cities along the Yellow River in Henan Province as the research area, quantifies the supply and demand level of food production services in 2023, takes counties as the smallest flow unit of food production services, and calculates the flow of food production services through the ecological radiation force model to identify nodes with important supply functions in the flow of food production services. Based on the arable land flow implied by the flow of food production services between counties, the ecological compensation standard for arable land is quantitatively calculated to provide scientific support for the formulation of reasonable ecological protection and agricultural development policies. The results show that:(1) There is a spatial mismatch between food supply and demand in the Yellow River region of Henan Province. The high food supply area is concentrated in the plains of northern and eastern Henan, while the high food demand area is radiating outward from the population centers of Zhengzhou, Luoyang and Xinxiang. The coupling coordination of food production service supply and demand is mainly barely coordinated.(2) In 2023, there were 115 grain production service flow routes in the Yellow River Basin of Henan Province, with a total flow of 1.2018 million tons. The flow was mainly concentrated in densely populated urban areas and surrounding areas.(3) Wushe County, Gongyi City and Xinxiang County, among other key counties, undertook more than 4 grain flows. These key counties are the core hubs for ensuring the efficiency of grain flow in the region.(4) A total of 22 districts in the study area benefited from the grain production service flow and needed to pay a total of RMB 1.417 billion in ecological compensation for cultivated land to 35 counties and districts that supplied the grain production service flow. Among them, Zhengzhou City(RMB 745 million) and Luoyang City(RMB 334 million) paid relatively high amounts. The research results can provide scientific support for the formulation of policies for food security, cultivated land protection and optimization of ecosystem services in the Yellow River Basin.