广西石灰岩山区土地可持续利用综合评价与诊断

为探究广西石灰岩山区土地可持续利用水平,协调区域科学发展,从社会可接受性、生产经济性、生态安全性3个方面选取15个指标构建土地可持续利用综合评价体系,并运用三角模型和熵权法等方法综合分析了广西石灰岩山区主要的32个县(区)土地利用可持续状态,识别各区县土地利用所存在的问题,找出了影响土地可持续利用的障碍因素。研究表明：兴宾区、金城江区、柳江区等11个县(区)为相对可持续状态,东兰县、平果县等10县(区)为弱可持续状态,而罗城仫佬族自治县、忻城县等11个县为不可持续状态。根据障碍因素诊断结果,结合广西主体功能区的发展规划要求,石灰岩山区各县(区)可探索进行土地差别化利用转型,以实现更好的土地可持续利用模式。

Comprehensive Evaluation and Diagnosis of Sustainable Land Use in Limestone Mountain Areas

In order to explore the sustainable use level of limestone mountainous areas in Guangxi and coordinate the scientific development of the region, this paper selects 15 indicators from three aspects: social acceptability, production economy and ecological security to construct a comprehensive evaluation system for sustainable land use, and uses the triangular model and the entropy weight method and other methods comprehensively analyzed the sustainable use of land in 32 counties (districts) in the limestone mountainous area of Guangxi. It not only identifies the problems of land use in various districts and counties, but also identifies the obstacles that affect the sustainable use of land. The research shows that 11 counties (districts) such as Xingbin District, Jinchengjiang District and Liujiang District are relatively sustainable, and 10 counties (districts) such as Donglan County and Pingguo County are weakly sustainable, while 11 counties such as Luocheng County and Xincheng County are unsustainable. According to the diagnosis results of obstacle factors and combing with the development planning requirements of Guangxi"s main functional areas, all counties (districts) in the limestone mountainous areas can explore the transformation of land differential utilization to achieve a better land sustainable use model.