Sustainable Ecosystem Service Value Based On Land Use Transition

In the context of new urbanization and industrialization,the rapid development of Chin a’s economy also poses a serious threat to the natural ecosystem on which people depend.L and use transition,as one of the main driving factors for the rapid development of urbanizati on,has become increasingly prominent due to the ecological and environmental problems c aused by unreasonable land use,affecting the overall balance of the ecosystem.Under the b ackground of the current ecological civilization construction,taking the strengthening of en vironmental protection and maximizing ecological benefits as the guide,exploring the chara cteristics of land use transformation and the changes in ecosystem service value affected by it has important reality for rationally guiding regional land transformation and utilization an d strengthening ecosystem management significance.Taking Hebei as an example,based on the relevant research data of land use,economy and society in 2010,2015 and 2020,this paper firstly analyzes the characteristics and devel opment trend of land use transition in the study area by using methods such as land transfer matrix and land comprehensive index;Secondly,the equivalent factor,sensitivity index,lan d contribution rate and other methods are used to calculate the ecological service value and its changes affected by land use transition.Whether the transformation state of ecological se rvice value under land use transition is in line with Pareto optimality,in order to explore the sustainability of ecosystem services.The main conclusions are as follows:(1)From 2010 to 2020,the land use structure in Hebei is mainly arable land,followed by grassland and woodland.The change of land use area showed the characteristics of "thre e increases and three decreases",which showed that the area of forest land,construction lan d and water area increased,and the area of cultivated land,grassland and unused land decre ased.From the dynamic point of view,the largest change is the construction land,which is4.53%.From the comprehensive index,land use showed an increasing trend,an increase of1.42%.During the past 10 years,all types of species in the study area have undergone a cert ain degree of transformation,among which cultivated land has been converted into construc tion land.(2)The value of ecosystem services in Hebei shows an increasing trend,from 752.004 billion yuan in 2010 to 791.628 billion yuan in 2020,an increase of 5.27%.From the perspe ctive of various types,the ecological service value of forest land,water area and constructio n land showed an increasing trend,while cultivated land,unused land and grassland showed a decreasing trend.From the analysis of ecological service functions,the main ones are adj ustment services and support services,followed by cultural services and supply services.(3)From 2010 to 2020,the transformation status of ecosystem service value under the land use transition in Hebei is that cultivated land and construction land are transformed int o water;Therefore,with the help of the land stock standard and the distribution of land ecol ogical service value in the "Planning",it can be seen that the current transformation state ha s not reached the Pareto optimum,and the ecosystem service is in a state of unsustainable d evelopment.Therefore,it is proposed to strictly observe the red line of cultivated land,impr ove the management and protection of forest land resources,strengthen the intensive use of land resources,promote the ecological restoration compensation policy,and strengthen the e cosystem management mechanism to improve the sustainability of ecosystem services.