河北省南和县耕地集约利用评价及障碍度诊断

发布时间：2018-07-03 04:59

  本文选题：时空分异 + 集约利用　； 参考：《江苏农业科学》2017年04期

【摘要】：为探究耕地利用中的主要障碍限制因素,实现耕地的集约高效利用,以有着"畿南粮仓"之称的河北省南和县为例,从耕地投入强度、利用程度、利用效率、持续状况4个方面构建评价指标体系,应用变异系数法确定指标的权重。在此基础上通过构建的评价模型定量计算南和县及各乡镇耕地集约利用分值,并进行时空特征分析以及障碍因素分析。主要研究结论如下:(1)2003—2013年,南和县各乡镇的集约水平在提高,集约利用等级逐渐由低等级向高等级转化;集约利用等级相同的乡镇呈现集聚连片分布和数量逐年扩大的特征;(2)2003—2013年,南和县及各乡镇因素层因子间的协调度在增加;(3)2003、2008、2013年,因素层障碍因子中,投入强度和持续状况分别是全县最大和最小的限制因子,其他2项因素排名中等、差别不大;各乡镇的排序和全县的整体情况基本一致;2013年,持续状况是和阳镇最大的因素层限制因子。指标层因子中,南和县以及各乡镇排名前6位的限制因子不尽相同,绝大多数属于投入强度指标;2013年,除投入强度指标外,人均耕地、粮食安全系数、垦殖系数、复种指数也是某些乡镇耕地集约的限制因子。
[Abstract]:In order to probe into the main limiting factors of cultivated land utilization and realize the intensive and efficient utilization of cultivated land, taking Nanhe County of Hebei Province, which is known as the "guinean granary", as an example, the input intensity, the degree of utilization and the utilization efficiency of cultivated land are taken as an example. The evaluation index system was constructed in four aspects, and the weight of the index was determined by the coefficient of variation method. On the basis of this, the cultivated land intensive utilization scores of Nanhe County and each township were calculated quantitatively by the evaluation model, and the space-time characteristic analysis and obstacle factor analysis were carried out. The main conclusions are as follows: (1) from 2003 to 2013, the intensive level of towns in Nanhe County is increasing, and the level of intensive utilization is gradually changing from low level to high level; Towns with the same level of intensive utilization show the characteristics of agglomeration distribution and increasing number year by year; (2) from 2003 to 2013, the degree of coordination among factors of Nanhe county and each township is increasing; (3) from 2003 to 2008, in 2013, the factor level barrier factor, The input intensity and sustainability are the largest and smallest limiting factors in the county respectively, while the other two factors rank moderately, with little difference; the ranking of the townships and towns is basically the same as the overall situation of the whole county; in 2013, Persistent condition is the biggest factor layer limiting factor in Heyang town. Among the index layer factors, Nanhe County and each township rank the top 6 limiting factors differently, most of them belong to the input intensity index. In 2013, in addition to the input intensity index, per capita arable land, food safety factor, reclamation coefficient, The multiple cropping index is also a limiting factor for the intensification of cultivated land in some villages and towns.
【作者单位】： 河北农业大学资源与环境科学学院;河北农业大学国土资源学院;河北农业大学商学院;
【基金】：国土资源部公益性行业科研专项(编号:201311060) 河北省科技支撑计划(编号:132276329)
【分类号】：F323.211
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本文编号：2092500