摘要
喀斯特土地资源是一类独特的土地资源,只有统筹规划,合理分区才能保障喀斯特地区土地资源的可持续利用。选择都安典型喀斯特土地系统为研究对象,统筹区域土地经济、生态和社会发展功能的原理,以2009年相关分析数据构建自然资源、社会、经济类共16项评价指标。根据指标性质,运用效用函数进行标准化处理;然后运用网格法将都安县土地系统划分为313个网格单元,以ANN的BP模型进行系统功能分区评价,最后将结果反映在图上。结果显示:都安县喀斯特土地系统可分为生态环境恢复区、保护性开发区、生态经济协调区、人文建设区4个功能区域。据此可以保证喀斯特土地利用的合理方向,使都安县土地资源配置效率得到最大化并实现土地的可持续利用。该分区方法较为科学,反映的结果较为客观,可为其他喀斯特地区的土地利用活动提供参考,但在指标的选取方面还有待进一步完善。
Karst land resource is one unique class of land resources,that only overall planning and rational partition can safeguard its sustainable use.Du′an typical Karst land system was selected as an rearch object.Based on the theory of regional land ecology,economy and society function development,with the data of 2009 related construct totally 16 evaluations on natural resources,social and economic etc.According to the nature of indicators,standardize the indicators with the utility function,then,by using the method of lattice,Du＇an land system was divided into 313 grid cells,the regional functions were evaluated according to BP neural network technology.Finally,the results were displayed in the form of the map.The results show that the Du＇an karst land system can be divided into 4 functional zones such as ecological environment restoration zone,protective development zone,ecological and economic co-ordination zone and humanity built-up zone.Based on the function zones,the land use direction can be ensured reasonably,and the efficiency of the county land resources allocation can be maximized,the land use action can be sustainable.This partition method is more scientific and the result is more objective,which can provide a reference for land use activities of other karst areas,however,the selection of indicators should be further improved.
出处
《水土保持研究》
CSCD
北大核心
2012年第2期131-136,共6页
Research of Soil and Water Conservation
基金
国家自然科学基金(40871250)
广西自然科学基金重点项目(2010GXNSFA013006
0832021Z)
