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Impacts of land use change on landscape patterns in mountain human settlement:The case study of hantai district(Shaanxi,China)

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Journal of Mountain Science 2021年第3期18卷 749-763页

作者： WANG Lei WU Lian ZHANG Wei School of Architecture Chang'an UniversityXi’an 710064China

Mountain area is an important geographical unit of land,and its ecology is sensitive and *** the past few decades,human activities have caused dramatic changes in land use in mountainous areas,which caused changes in landscape patterns and impacts on the ecological *** is unknown how the mechanism of land use affects the landscape pattern at different *** hantai district,a typical human settlement in the mountain area in Shaanxi,China,was chosen as the study *** on the remote sensing images,the mathematical models and landscape indexes were adopted to evaluate the impact of land use change from 1998 to 2017 on the landscape pattern at different scales,and its main driving forces were *** results showed that the urbanized land expanded largest from 15.39%to 24.30%,and cultivated land experienced the largest decline from 43.54%to 35.35%.Changes in land use have made the patch morphology of most land types developed from a natural random to a sawtooth shape,and its spatial pattern evolved from a ruleset to a fragmented *** reflects the continuous strengthening of human intervention in the process of regional *** the jurisdiction of hantai district,the biggest change in landscape pattern is in Hanzhong City and Qili *** improved economy and increasing population and urbanization rate were the main factors that cause these *** research could provide necessary information for understanding the evolution mechanism of land resources in mountainous human settlements for mountainous areas with significant geomorphic differentiation.

关键词： Land use change Land cover change Landscape pattern evolution Transition trend Driving force Mountain regions hantai district

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Dual-objective pattern optimization method for land suitability zoning in mountain counties

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Journal of Mountain Science 2023年第1期20卷 209-226页

作者： WANG Lei WU Lian ZHANG Wei JING Wen-li School of Architecture Chang’an UniversityXi’an710061China

As the basic administrative unit of China,counties have grown rapidly in recent years in the context of rapid urbanization,especially for counties located in mountainous *** drastic changes in land in mountainous areas can easily cause irreversible damage to the sensitive ecological *** the dual-objective suitability zoning of ecological and construction balance,regional sustainable land use patterns can be *** this study,hantai district in Southern Shaanxi province,China,was chosen as the research area aiming at creating a balance between ecological supply and the development of construction in spatial planning.A dual-objective process evaluation system for ecological protection and construction development was proposed with 15 resistance factors selected from three attributes:natural ecology,economic society,and *** minimum resistance surface discrimination methods for ecological land and construction development land were proposed based on vertical space superposition and horizontal minimum cumulative resistance ***,the land in hantai district was divided into four development grades from the optimal angle of dual goals,i.e.,the construction core zone being 134.56 km^(2),the suitable construction zone 115.77 km2,the ecological buffer zone 153.74 km^(2),and the ecological control zone 151.93 km^(2),using the method combining resistance difference and threshold *** addition,the development direction of each town under jurisdiction was *** study compensates for the deficiency of traditional methods that evaluate land only from a single vertical or horizontal process.

关键词： Dual-objective pattern Land suitability zoning Minimum cumulative resistance model Mountain county hantai district

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