Study On The Measurement And Spatial-temporal Characteristics Of Land Use Conflict In The Area Around Beijing And Tianjin From The Perspective Of "Production-living-ecology"

In recent years,with the accelerated pace of urbanization,the contradiction between human and land has become increasingly prominent,land resources are facing the pressure and challenges of constructive land encroachment on agricultural land and accelerated degradation of ecological land.How to plan and use scarce land resources and solve the imbalance of land use structure caused by uneven land use has become an urgent problem affecting regional sustainable development.In the process of production land,living land and ecological land use,there are more prominent problems of land conflict among regions.Under this contradiction,this study attempts to put forward mitigation measures through the analysis of conflict intensity and conflict space differentiation.Take the area around Beijing and Tianjin as the study area,and take the county-level administrative division as the regional unit,including Tangshan City,Cangzhou City,Baoding City,Chengde City,Zhangjiakou City and Langfang City.Combined with the perspective of "Production-Living-Ecology",referring to relevant literature and research,the index system is constructed according to "production","life" and "ecology",and the pressure-state-response(Pressure-State-Response,PSR)model is used to measure the intensity of land use conflicts around the internal contradictions of each land use type under the three perspectives,and to analyze the internal conflicts of various land use types under the three perspectives.And its reflection in the overall conflict performance is studied.Combined with PSR model and spatial autocorrelation analysis,this study analyzed the distribution and spatio-temporal evolution characteristics of land use conflict in the area around Beijing and Tianjin from 2005 to 2017.The study shows that the intensity of land use conflict shows different characteristics from different perspectives:(1)In terms of time: The decrease of stress index and state index from the perspective of "Production" affects the continuous reduction of the intensity of land use conflict,and the decline of response index from the perspective of "Life" effectively alleviates the situation of land use conflict from 2009 to 2013.The combined effect of pressure,state and responseindex from the perspective of "Ecology" makes the intensity of land use conflict continue to increase.(2)In terms of spatial difference: During 2017,the area around Beijing and Tianjin was simultaneously affected by the increase of population,the per capita GDP of land and the adjustment of industrial structure,which aggravated the land use conflict.Among them,the extreme conflict areas are Cangzhou municipal district and Langfang municipal district,and the high conflict areas are Tangshan municipal district and Yongqing of Langfang.(3)In terms of layout: The land use conflict around Beijing and Tianjin has a certain spatial agglomeration,but the agglomeration intensity does not show an increasing trend with time.During the study period,the trend of land use conflict difference shifted obviously.During 2017,the high concentration area of land use conflict was mainly concentrated in the municipal district of Cangzhou and Kangbao of Zhangjiakou from the perspective of"Production".The low-degree agglomeration area of land use conflict is mainly concentrated in Chengde and Zunhua of Tangshan.From the perspective of Llife",the high concentration areas of conflict are mainly concentrated in the municipal district of Tangshan and Qian'an of Tangshan,while the distribution and changes of the areas in the low concentration area are relatively scattered.From the perspective of "Ecology",the high concentration area of conflict is mainly concentrated in the municipal area of Zhangjiakou,while the low concentration area is mainly concentrated in the municipal district of Chengde.Finally,according to the results of the empirical analysis of the land use conflict in the area around Beijing and Tianjin,the corresponding solutions are put forward: it is suggested to control population growth,improve population quality,improve the level of science and technology,innovate land use models,and develop characteristic industries,coordination of urban and rural development and other measures to coordinate the conflicts in the process of land use around Beijing and Tianjin.