Identification of Land-Use Conflict Characteristics and Analysis of Driving Forces:Taking the Central Yunnan Urban Agglomeration as an Example
Identifying the evolution characteristics and driving mechanisms of land-use conflicts is a prerequisite for constructing a sustainable development path of regional land resource allocation.Any methodology of single land-use analysis was not enough to mine more potential information about the transformation between land types,which leads to the lack of clarity on the characteristics of land types in the process of conflict evolution.In this study,by the urban agglomeration in central Yunnan province of China,it exemplified a proper construction of land use conversion map to visually present a land-use conversion pattern;it introduced a land use conflict measurement model based on landscape patches to identify land-use conflicts in the urban agglomeration from 1990 to 2020;it combined composition change method with intensity analysis method to explore the intensity of increasing or decreasing in each land-use type under different land-use conflict circumstances;then driving mechanism of land-use conflicts was determined by PLUS model(based on patch generation).(1)From 1990 to 2020,the land-use intensity index increased from 0.11％to0.79％,dominated by land exchange,with significant changes in the quantity of cultivated land and construction land,and the cultivated land tended to be transformed into construction land.The average land use conflict index increased by 0.07 from 1990 to 2020,which showed a spatial distribution of strong in the west and weak in the east,demonstrated by the encroachment of flat cultivated land,forest land,and grassland in the east.The decrease in the amount of arable land was mainly influenced by population density,while the expansion of construction land was more affected by population density and GDP.Land use conflicts were inseparable linked to the drastic conversion of land-use types.In areas where conflicts had intensified,the intensity of the increasing in construction land and the decreasing in cultivated were relatively large,and with the decreasing in cultivated and grassland,the increasing in construction land was active.(2)It is our points that it is an inevitable choice for urban development to take into account the sustainable use of ecological land with large natural endowments and fragile cultivated land.The mitigation of land use conflicts in mountainous urban agglomerations needs to address the protection of ecological land with a flat terrain.The layout and construction of mountainous cities need to avoid the risk of fragmentation of cultivated and basic farmland.Harmonizing the high regional concentration of population and the objective pursuit of economic development is the key to alleviate the deterioration of conflict in plateau and mountain urban agglomerations.This study can provide a basis and reference for the monitoring of land space dynamics in the central Yunnan urban agglomeration and for urban planning and sustainable land development in mountainous urban agglomerations.
land-use conflictlandscape patternintensity analysisdriving forcethe central Yunnan urban agglomeration
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