Study On The Optimization Of Green Spatial Pattern In Changping District Of Beijing Based On Ecosystem Services Assessment

The rapid development of the city has led to great changes in the way of land use.The continuous spread of urban construction land has led to the occupation of green space,which has led to the decline of the quality of ecological environment,and has a negative impact on the sustainable provision of ecosystem services and human well-being.In the process of urbanization,balancing the relationship between urban development and ecological protection and optimizing the urban construction land and green space pattern are the key to ensure the sustainable provision of ecosystem services and the basis for the realization of urban sustainable development.Changping District of Beijing,as an important part of the ecological conservation area in the northwest of Beijing,Tianjin and Hebei,takes ecological protection as the first priority and develops characteristic historical and cultural tourism.Based on the theories of landscape ecology,landscape architecture and urban planning,this paper discusses a reasonable framework of ecosystem service evaluation system,which provides a practical theoretical basis for the optimization of green spatial pattern.First,based on the land use changes in 2010 and 2017,CA Markov model is used to predict the land use types in 2024 under the state of urban natural development and provide data support for the follow-up research;then,according to the research hotspot at home and abroad,combined with Changping planning,focusing on ecological and cultural heritage,carbon reserves,soil conservation,water supply,biodiversity,accessibility,and society are selected According to the assessment results,it is divided into high,medium and low ecosystem service value green spaces,analyzes the spatial and temporal change trends and causes of different types of green spaces,and puts forward corresponding construction strategies;finally,it uses The minimum resistance accumulation model is used to construct the ecological corridor under the influence of the comprehensive resistance surface,and the strategy of constructing the green and safe ecological security pattern is put forward,and the strategy of optimizing the green spatial pattern in Changping District is further discussed.In addition,the spatial and temporal trends of green space in 2024 and the construction of ecological corridor network system in green space are highly consistent with the spatial planning of Changping District,indicating that the optimization strategy of green spatial pattern proposed in this study can provide spatial guidance for the future development and construction of Changping District.