基于农用地分等的耕地资源安全评价及整治分区

发布时间：2018-03-11 11:05

本文选题：土地利用　切入点：土地整治　出处：《农业工程学报》2017年16期 　论文类型：期刊论文

【摘要】：为快速准确的掌握耕地资源安全要素的时空变化信息,推进小尺度耕地资源安全保护实践,文章以昌黎县为研究区域,运用文献研究法对耕地资源安全内涵的构成进行了完善,并构建了县域耕地资源安全评价框架体系。研究以昌黎县2015年农用地分等成果作为数据基础,结合同期土地利用调查、农业地质调查、土壤实地采样检测等数据信息完成数据库建设;运用单指标评价法,对耕地资源安全要素逐一进行评价。评价结果显示:全县有接近15%的耕地粮食单产水平较低,接近10%的耕地灌溉保证不足,接近15%的耕地土体剖面构型处于安全等级以下,接近10%的耕地有效磷的含量偏低;另外,全县耕地有机质含量偏低;铜元素含量出现极小面积的低度不安全;化肥的使用量在全县处于低度不安全级别。文章按照整治技术手段和监测管理措施一致性原则将不安全评价结果图进行分组并叠加,划出综合工程整治区、肥力提升区、退耕区,并对应提出整治及监测管理制度。研究表明:利用农用地质量分等成果能够快速完成耕地资源安全数据建库,并能促进耕地资源安全监测和诊断的常规化,可以高效地推行耕地资源的全要素管控。
[Abstract]:In order to quickly and accurately grasp the temporal and spatial change information of cultivated land resource security elements and promote the practice of small scale cultivated land resource security protection, the paper takes Changli County as the research area and uses the method of literature research to perfect the composition of cultivated land resource security connotation. Based on the results of agricultural land classification in 2015 in Changli County, and combining with the land use survey in the same period and agricultural geological survey, the paper constructs a framework system for evaluating the security of cultivated land resources at the county level. The data information such as soil sampling and testing was used to complete the database construction, and the single index evaluation method was used to evaluate the security factors of cultivated land resources one by one. The evaluation results showed that nearly 15% of the cultivated land grain per unit yield level was low in the whole county. Close to 10% arable land irrigation is insufficient, close to 15% cultivated land soil profile configuration is below the safety level, close to 10% cultivated land available phosphorus content is low, in addition, the county cultivated land organic matter content is on the low side; The content of copper is very low and the amount of chemical fertilizer is in the low level of insecurity in the whole county. According to the principle of consistency of regulation technique and monitoring and management measures, the result map of unsafe evaluation is grouped and superposed. The comprehensive engineering regulation area, fertility raising area, returning farmland area are marked out, and the regulation and monitoring management system is put forward. The research shows that the farmland resource safety data can be constructed quickly by using the agricultural land quality grading results. And it can promote the routine monitoring and diagnosis of cultivated land resources, and can effectively carry out the management and control of all elements of cultivated land resources.
【作者单位】：河北农业大学国土资源学院;河北农业大学资源环境学院;
【基金】：2014年河北省社会科学基金(HB14GL040)
【分类号】：F323.211

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