摘要
以长阳土家族自治县的基本农田保护图斑为研究对象,对基本农田保护区布局的合理性进行评价,为科学编制新一轮土地整治规划和建设高标准基本农田提供指导和参考。采用知识与数据驱动一体化的模糊证据权模型的研究方法。结果表明:(1)模糊证据权模型能够充分利用先验知识,克服了因子筛选、权重计算的主观性,算法简单,可操作性强,使得评价结果客观、合理;(2)86.52%的样本点落在修正后验概率分级图中度合理及以上的级别,与已知的信息吻合性较高,表明了模糊证据权能科学,有效的进行基本农田保护区空间布局合理性的评价;(3)依据修正后验概率将研究区域划分为4个等级,高度合理、中度合理、临近合理、不合理,其中合理区域占到基本农田保护区的96.79%,表明了长阳土家族自治县基本农田保护区划定较合理。研究结果为后期快速有效的开展基本农田保护区合理性评价提供了方法借鉴,并对布局优化调整和可持续发展提供指导意义。
The purpose of this research is to conduct evaluation of spatial distribution of basic farmland conser- vation area in order to provide guidance and reference for a new round of land reclamation planning and high- standard basic farmland construction carried out scientifically. Methods are based on fuzzy weight of evidence model. The results showed that. （1） fuzzy weight of evidence model, which is both data-driven and knowl- edge-driven, could give full play to the prior knowledge and information in the raw data, could overcome the subjectivity factor screening and weight calculation, simple algorithm, easy to operate, making the evalua- tion results objective and reasonable; （9,） 86.52% of the known suitable points were above moderately suit- able level in the grading figure of modified posterior probability, reflecting the high coherency, which indica- ted that the fuzzy weight of evidence connecting with modified posterior probability could evaluate the suita- bility of the spatial distribution of basic farmland protection areas scientifically and effectively; （3） based on the fixed obvious turning points of posteriori probability frequency distribution, the study area was divided into four levels： highly rational zone, moderate rational zone, approaching reasonable zone, unreasonable zone, reasonable area accounted for 94.73% of basic farmland protection areas, which meant that the current planning scheme was basically rational. This paper provided a method for the evaluation of basic farmland protec- tion areas and the basis for the adjustment of the late prime farmland. The research results could provide a method reference to carry out the quick and effective evaluation of the reasonableness of the basic farmland protection areas latter, improve the basic farmland protection area layout rationality, and promote sustainable development.
出处
《水土保持研究》
CSCD
北大核心
2015年第4期161-167,共7页
Research of Soil and Water Conservation
关键词
基本农田保护区
模糊证据权模型
空间布局
合理性评价
长阳土家族自治县
basic farmland protection
fuzzy weight of evidence model
areas spatial layout
evaluation
Changyang Tujia Autonomous Countv
作者简介
龚建风（1986-），女，湖北省麻城市人，硕士研究生，研究方向为国土资源评价与土地利用规划研究。E-mail：724286234@qq．com
通信作者：王占岐（1965-），男，陕西岐山人，教授，博士生导师，研究方向为土地经济与土地规划。E-mail：wzqwgp@126．com
