喀斯特石漠化地区土地利用效益的协调度评价——以广西都安瑶族自治县为例

Evaluation of Coordinated Degree of Land Use Efficiency in Karst Rocky Desertification Area——a case study of Du'an Yao Autonomous County of Guangxi

土地利用效益是衡量土地利用水平的重要指标,而土地利用效益的协调度则是衡量土地利用可持续性的重要标度所有的点号应.以广西都安瑶族自治县为例,建立喀斯特石漠化地区土地利用效益的评价指标体系,利用层次分析法确定各指标权重,应用协调度函数评价法,对都安县2001—2005年土地利用效益的协调度进行了评价.结论:都安县土地利用效益的协调度在评价期间内不断上升;土地利用效益协调度的变化呈阶段性;影响土地利用效益协调度变化的因素中包括积极因素,也有较为明显的消极因素.

Land use efficiency is an important index to measure the level of land use. Moreover the co- ordinated degree of land use efficiency is an important indicator of land use sustainability. Take Du＇ an Yao Autonomous County of Guangxi as an example, this paper established an index system of evaluating land use efficiency in Karst rocky desertification area, in application of the method of AHP to defining the weight of each index, using the evaluation method of coordinated degree function to evaluate the coordinat- ed degree of land use efficiency in Du＇ an County from 2001 to 2005. By analyzing the evaluation results, some conclusions were drawn： the coordinated degree of land use efficiency in Du＇ an County increased year by year in evaluation period; the coordinated degree development of land use efficiency appeared periodical- ly; the factors influencing the coordinated degree of land use efficiency included aggressive factors as well as negative factors.