基于集对分析的高标准基本农田建设项目选址合理性评价--以重庆市梁平县为例

针对高标准基本农田建设项目选址缺乏科学依据和方法的问题,为探讨高标准基本农田建设项目选址合理性的评价方法,本研究以重庆市梁平县为例,在理解集对分析原理的基础上,利用原创联系度的可展性对集对分析法进行改进,将3级评判扩展到4级评判,并结合熵权法,对重庆市梁平县2014年计划实施的14个高标准基本农田建设项目进行选址合理性评价。集对分析与熵权法包括建立评价指标体系、评价分级标准,计算指标熵权、联系度和确定评价等级等内容。此外,为验证集对分析法的可行性和合理性,将其评价结果与模糊综合评价结果进行比较。研究结果表明:梁平县2014年高标准基本农田建设项目的选址合理性整体较好。其中,金带镇双桂村高标准基本农田建设项目选址合理性为"合理",仅有梁山街道天鼓村高标准基本农田建设项目和荫平镇乐英村高标准基本农田建设项目的选址合理性为"较不合理",其余11个项目区的选址合理性均为"较合理"。影响梁平县高标准基本农田建设项目选址合理性的主要限制指标是土壤表层厚度、土壤有机质含量、水系密度和灌溉保证率。集对分析评价结果与模糊综合评价结果基本一致,虽个别项目区具有一定差异,但未出现越级现象。运用集对分析的同一度评判方法所反映出的信息更加丰富,能够更好地反映各评价单元的差异性,其结果更为精确,可信度较高,具有较好的实用性和应用价值。该研究可为梁平县高标准基本农田建设项目的选址提供科学依据,并为项目选址合理性评价提供科学、可行的研究方法。

Evaluation of the reasonability of site selection for High Quality Capital Farmland Construction Project based on set pair analysis

Due to the lack of scientific evidence and methodology for selection of sites for High Quality Capital Farmland Construction Project (HQCFCP), this research focused mainly on exploring and evaluating methods of HQCFCP site selection. Based on the understanding of the principles of set pair analysis (SPA), Liangping County of Chongqing City was selected as a case study research area. According to the malleability of the original relations and through improvement of the analysis method by extending the three-level justification into four-level, and integrating the entropy method with set pair analysis, an evaluation on the reasonability of site selection was finally conducted for the implementation of 14 HQCFCPs in 2014. The SPA and en-tropy method composed of the construction of evaluation index system and classification standard along with the calculation of entropy indices and connections as well as the determination of evaluation levels. Also in order to verify the feasibility and reasonability of SPA, the SPA conclusions were compared with conclusions from fuzzy synthetic evaluation (FSE). The results showed that the sites selection of HQCFCPs in Liangping County was largely reasonable. Specifically, based on the level of justification standard, the sites selection for HQCFCPs at Shuanggui Village of Jindai Town was classified as reasonable. Only two villages (Leying Village of Yinping Town and Tiangu Village of Liangshan Town) had moderate unreasonability for HQCFCPs sites selection. Sites selection for HQCFCPs construction on the rest of the 11 projects areas were all evaluated as moderately reasonable. The influencing factors of site selection reasonability for HQCFCPs mainly included the depth of top soil layer, soil organic matter content, density of water system and the rate of guaranteed irrigation. The SPA results were basically similar to FSE results. In some project areas, the results seem to be different, although no inconsistency was noted. The application of SPA evaluation method yielded more information and was more beneficial to displaying the diversity of various evaluation units. Moreover, the results were more accurate and reliable and the method was therefore practicable and valuable. This study provided the scientific evidence for the selection of sites for HQCFCPs establishment in Liangping County. It also provided the needed information on the reasonability of site selection by using scientifically feasible method.