吴起县耕地后备资源宜耕性评价研究

发布时间：2018-01-02 07:16

本文关键词：吴起县耕地后备资源宜耕性评价研究　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：耕地后备资源宜耕性评价是针对未利用土地中的宜耕适垦地类,通过选取影响耕地后备资源的自然因素指标和社会经济因素指标,对耕地后备资源建立评价体系,计算各个评价单元的综合分值,根据研究区的具体情况,将耕地后备资源宜耕性开发进行等级划分,从而确定耕地后备资源适宜开发的先后时序,为今后优化和调整土地利用结构,提供科学依据,对保障国家今后的粮食安全有着重要的意义。补充的耕地重要来源是耕地后备资源,它在保持耕地总量的动态平衡中起着关键作用,耕地后备资源宜耕性评价研究的结果,可以为我国国土今后的合理规划利用和耕地总量动态平衡决策提供理论依据。本文以吴起县为例,根据己经掌握的吴起县土地资源实际状况,以土地利用现状图斑为评价单元,结合吴起县其他相关数据资料,在ArcGIS软件支持下,获取评价指标的属性数据,通过“主成分分析法”进行评价指标的选取,结合吴起县的具体实际,采用“专家打分法”确定权重,最终确定了各地类评价指标体系,采用“指数和法”获取耕地后备资源各个评价单元的综合分值,并对耕地后备资源开发的宜耕性程度进行划分,确定其开发时序,在此基础上对吴起县耕地后备资源开发利用的前景进行具体分析。为吴起县今后合理的制定开发整理计划提供了一定参考。
[Abstract]:Reserve resources of cultivated land suitability evaluation for unused land in arable arable land types, through the effect of selection of reserve resources of cultivated land natural factors and social economic factors, establish the evaluation system of land reserve resources, the integrated value of each evaluation unit, according to the specific situation of the study area, the cultivated land reserve resources suitability development is classified, so as to determine the reserve land resources suitable for development of the sequence, for the optimization and adjustment of land use structure, and provide a scientific basis, has an important significance for the protection of national food security in the future. An important source of supplementary cultivated land is arable land reserve resources, it plays a key role in maintaining the homeostasis the total arable land, arable land reserve resources evaluation research, for China's land utilization and rational planning in the future will total dynamic balance of cultivated land This policy provides a theoretical basis. In Wuqi County as an example, according to the land resource in Wuqi County has been to grasp the actual situation, the current land use map for the evaluation unit, combined with other relevant data in Wuqi County, under the support of ArcGIS software, obtaining the attribute data of the evaluation index, selecting evaluation index by principal component the analysis method, combined with the specific reality of Wuqi County, using expert scoring method to determine the weight, and ultimately determine the different kinds of evaluation index system for land reserve resources of each assessment unit of the comprehensive score of the index and method, and the cultivated land resource suitability degree, determine its development the timing of the development and utilization of cultivated land in Wuqi County, the prospect of reserve resources on the basis of specific analysis. For future rational development of Wuqi County Development and consolidation plans provide certain reference.

【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：F323.211

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