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

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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Evaluation of Land Reclamation and Implications of Ecological Restoration for Agro-pastoral Ecotone: Case Study of Horqin Left Back Banner in China

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Chinese Geographical Science 2017年第5期27卷 772-783页

作者： ZHOU Jian ZHANG Fengrong XU Yan GAO Yang XIE Zhen Center for Land Resources Research in Northwest China Shaanxi Normal University College of Resources and Environmental Sciences China Agricultural University

The agro-pastoral ecotone has been recognized as the main distribution area of reserved land resource for cultivation. Accordingly, clarifying this assumption, as well as concerting land reclamation and ecological restoration, is important to ensure food security and environmental improvement in the agro-pastoral ecotone. We selected Horqin Left Back Banner(HLBB) as the subject of our case study. The landscape ecological security pattern of this area was determined using the minimum cumulative resistance model. Over-cultivation, quantity of reserved land resource for cultivation, and changes in landscape indexes before and after land use adjustment were then analyzed. Over-cultivation is a serious problem in the agro-pastoral ecotone. Reserved land resource for cultivation is less than that considered previously, and the area of reserved land resource for cultivation in HLBB only accounts for 11.50% of total uncultivated land. With regard to changes in landscape indexes, the adjusted land use pattern is effective for anti-desertification. The compensation standard for abandoned cultivated land should be improved and the comprehensive results of ‘Grain for Green' should be evaluated to further implement ecological restoration in the agro-pastoral ecotone.

关键词： land reclamation ecological restoration minimum cumulative resistance model agro-pastoral ecotone China

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