Study On The Evaluation,Trade-Off And Synergy Of Agroecosystem Services In Shaanxi Province

In recent years,China has paid more attention to the protection of agricultural ecosystems.As a large agricultural province,improving the stability of Shaanxi’s agricultural ecosystem is very important for China’s agricultural development.The axiom that embodies ecosystem services is that all the direct or indirect benefits that mankind obtains from the ecosystem can intuitively reflect the balance between human demand and ecosystem supply.The agricultural ecosystem provides people with the production services needed to maintain their basic life.At the same time,it also provides carbon capture,and protects biodiversity when organizing services Physical and mental entertainment,tourism and entertainment services.However,due to human intervention,the structure and function of agricultural ecosystem in Shaanxi Province were destroyed.Considering the differences in the natural geography and economic development of Shaanxi Province,it is necessary to clarify the temporal and spatial conditions of the agricultural ecosystem in Shaanxi Province by evaluating the time ecosystem services Explore the key points and trends of improving and protecting agricultural ecosystems in the field of service balance and cooperation in different ecosystems.On this basis,Based on the theory of economy and environment,the temporal and spatial changes of the four agricultural ecosystem services in Shaanxi Province from 2000 to 2020,including production services,Carbon stability,biodiversity,tourism,entertainment and services.The investment model is mainly used to evaluate today’s ecosystem services.Explore regional differences.The main results of this paper are as follows:(1)From 2000 to 2020,there are significant differences in different types of land in Shaanxi Province,with the largest range of arable land reduced from 71867 km in 2000 to 66730 km.By 2020,Falling 5137 square kilometers,Most of the land is used for construction.(2)Compared with2000,the cultivated land production services in Shaanxi Province increased significantly in 2020,followed by tourism and entertainment,while carbon stability and biodiversity services decreased relatively.Because a large number of construction land occupied the surrounding agricultural land,during the study period,the regional distribution value of the four agricultural ecosystem services decreased and increased with the increase of the whole urban construction area.Two things.(3)From 2000 to 2020,there is a synergy between carbon stability services,tourism and entertainment,biodiversity,tourism and entertainment in Shaanxi agricultural ecosystem services.The trade-off between production services and carbon stability services,biodiversity,tourism and entertainment,but by 2020,production services,carbon stability services and biodiversity have been transformed into cooperative relationships and the trade-off between tourism Entertainment activities have been reduced to the lowest level.This paper will help enrich the quantitative research of agroecosystem services in Shaanxi Province,and improve the understanding of the space-time changes of agroecosystem services trade and cooperation in Shaanxi Province,to provide some support for the healthy development of agricultural ecosystems in the region.