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生态文明建设视角下的高标准农田建设适宜性评价
陈麟, 吴克宁
中国地质大学(北京)土地科学技术学院
摘要:
在全面推进生态文明建设的当下,中国的耕地保护工作进入数量、质量、生态“三位一体”保护新时代,以耕地质量提升为中心的高标准农田建设对生态保护和修复的作用意义重大。本文以吉林省梅河口市为研究区,结合农用地等别更新、土地利用现状调查、土壤普查报告及实地调查采样数据,从耕地的自然禀赋、基础设施状况、空间特征和生态环境质量4个方面选取耕层质地、排水条件、田块规模、土壤综合污染指数等14个指标,运用贝叶斯概率模型对高标准农田建设进行适宜性评价,以期为梅河口市高标准农田建设项目规划布局与选址提供技术服务支撑。研究表明:①在高标准农田建设中,耕地坡度、障碍层距地表深度、有机质含量、有效土层厚度、田间道路通达度、土壤微生物生物量碳和土壤综合污染指数7个指标对高标准农田建设适宜性的影响程度较大;②根据后验概率结果,将梅河口市耕地划分为4个不同程度的建设适宜性区,今后高标准农田建设首先在优先建设区开展,同时后备建设区为其提供了可靠的保证;③耕地本底质量和基础设施条件良好状况下,应引入土壤微生物生物量碳、生物丰度系数和土壤综合污染指数等指标从生态保护的角度进一步划分建设适宜性程度。本文旨在实现生态服务功能和生产功能同步提升,从而为生态文明建设的理论思考和实践创新提供科学依据。
关键词:  生态环境  高标准农田建设  贝叶斯概率模型  适宜性评价
DOI:10.13758/j.cnki.tr.2019.04.023
分类号:S282
基金项目:国家自然科学基金项目(40971127)资助。
Suitability Evaluation of High Standard Farmland Construction from Perspective of Ecological Civilization Construction
chenlin, wukening
China University of Geosciences (Beijing)
Abstract:
At the moment of comprehensively promoting the construction of ecological civilization, China's arable land protection work has entered a new era of “three-in-one” protection of quantity, quality and ecology. The promotion of high-standard farmland construction with the improvement of cultivated land quality is of great significance to ecological protection and restoration. In order to provide the technical services for planning layout and site selection of the high standard farmland construction project in Meihekou City of Jilin Province, combined with agricultural land renewal, land use status survey, soil survey report and field survey sampling data, from the natural endowment, infrastructure status, spatial characteristics and ecological environment quality of cultivated land, 14 indicators were selected which included plough layer texture, drainage condition, field size and soil comprehensive pollution index, and the Bayesian probability model was used to evaluate the suitability of high standard farmland construction. The results showed that in the construction of high standard farmland, the slope of cultivated land, depth of the barrier layer, organic matter content, thickness of the effective soil layer, accessibility of the field road, soil microbial carbon and soil comprehensive pollution index had a great influence on the suitability of high-standard farmland construction. According to the posterior probability results, the cultivated land in Meihekou City was divided into four different levels of construction suitability areas. In the future, the construction of high-standard farmland should first be carried out in the priority construction area. At the same time, the reserve construction area could provide a reliable guarantee. Under the good conditions of cultivated land background quality and infrastructure, the indicators such as soil microbial biomass carbon, biological abundance coefficient and soil comprehensive pollution index could be introduced for further dividing construction suitability from the perspective of ecological protection. This paper provide scientific bases in theoretical thinking and practical innovation of ecological civilization construction to realize the simultaneous improvement of ecological service functions and production functions and the effective mode of target integration.
Key words:  Ecological environment  High standard farmland construction  Bayesian probability model  Suitability evaluation

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