Ecological conservation and restoration zoning of county-level agricultural spatial ecology coupled with ecological service supply and demand:A case study of Yixing
Conducting research on agricultural spatial ecological protection and restoration zoning at the county level,and implementing differentiated ecological protection and restoration measures,has practical significance for coordinating the human-land coupling system and promoting sustainable development of nature and society.This article takes the agricultural space of Yixing as the research scope,couples the supply and demand patterns of ecosystem services,and constructs a comprehensive supply and demand security pattern for ecological protection and restoration zoning.The results show that:(1)The demand pattern for various ecosystem services in the agricultural space of Yixing is significantly different due to the combined effects of natural factors and human activities.The demand for soil conservation services presents an overall pattern of high in the northeast and low in the southwest;The overall demand for food supply services is high,similar to the spatial distribution of population;The demand pattern for carbon sequestration services is characterized by"high in the north and low in the south";The demand for water conservation services is relatively uniform in spatial distribution;The demand for habitat quality services is spatially divided into eight blocks.(2)The supply pattern of ecosystem services for soil conservation,carbon sequestration,water source conservation,and habitat quality maintenance in Yixing's agricultural space shows a"strong south and weak north"characteristic,while the high-value areas for food supply services are located in the northeast and western waistline parts of the research area.(3)Based on the comprehensive level of supply and demand security,the agricultural space can be divided into agricultural ecological reshaping area,agricultural ecological optimization area,agricultural ecological protection area,and agricultural ecological conservation area.Based on the current land use status,differentiated ecological protection and restoration measures are proposed for each district,such as global governance and key regional ecological reshaping,overall optimization and key regional ecological restoration,comprehensive ecological maintenance and local ecological remediation,strict ecological protection and control of development intensity.The study provides reference for the construction of ecological civilization and agricultural spatial planning in Yixing and other similar areas.
agricultural spaceecosystem servicessupply and demand assessmentsupply and demand security patternecological conservation and restoration
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