中国农用地整理项目安排与耕地资源分布的协调性研究

发布时间：2019-07-05 16:32

【摘要】：农用地整理是当前中国土地整治的重点,增加有效耕地面积、提高耕地质量和规模化程度是农用地整理的主导方向与建设目标,相应要求农用地整理项目安排应与现状耕地的数量与质量之间存在协调关系。为了从空间和时间上分析这一协调性,根据2006—2012年农用地整理项目数据,结合全国土地利用现状和农用地分等定级成果,通过建立县域尺度下一致性模型和重心模型,从全国和省级二个空间尺度,分析了农用地整理项目安排与耕地资源在时空分布上的协调性,得到以下结论:1全国层面上,14.4%的耕地区域安排了52.2%的整理项目,项目安排与耕地资源分布的均衡性较差;2省域层面上,多数省份整理项目安排与耕地资源的分布较为一致;3各等别耕地整理比例与其耕地面积比例较为一致,优等地和低等地的整理比例逐渐上升,高等地整理比例趋于下降,中等地整理比例基本稳定;4各等别耕地重心及整理重心按优等地、高等地、中等地、低等地由南向北分布,优等地和中等地的整理项目安排逐渐趋于均衡化,高等地整理开展偏于其耕地重心北侧,低等地整理分布较为不均。
[Abstract]:Agricultural land consolidation is the key point of land renovation in China at present. Increasing the effective cultivated land area, improving the quality and scale of cultivated land is the leading direction and construction goal of agricultural land consolidation, and the corresponding requirements are that there should be a coordinated relationship between the arrangement of agricultural land consolidation project and the quantity and quality of cultivated land in the present situation. In order to analyze this coordination from space and time, according to the data of agricultural land consolidation project from 2006 to 2012, combined with the present situation of land use in China and the grading results of agricultural land classification, through the establishment of consistency model and center of gravity model at county scale, the coordination between agricultural land consolidation project arrangement and the temporal and spatial distribution of cultivated land resources is analyzed from the national and provincial spatial scales, and the following conclusions are obtained: (1) at the national level, 14.4% of the cultivated land areas arranged 52.2% of the consolidation projects, and the balance between the project arrangement and the distribution of cultivated land resources was poor. (2) at the provincial level, the arrangement of consolidation projects in most provinces is consistent with the distribution of cultivated land resources, (3) the proportion of cultivated land consolidation in each grade is more consistent with the proportion of cultivated land area, the proportion of superior land and low land is gradually increasing, the proportion of high land arrangement tends to decrease, and the proportion of medium land arrangement is basically stable; (4) the center of gravity and the center of gravity of each grade cultivated land are distributed from south to north according to the superior land, high land, medium land and low land. The arrangement of the finishing project of the superior land and the medium land tends to be balanced gradually, and the arrangement of the high land is partial to the north side of the center of gravity of the cultivated land, and the arrangement and distribution of the low land is uneven.
【作者单位】：南京大学地理与海洋科学学院;
【基金】：国家自然科学基金项目(41201386) 江苏省自然科学基金(BK2012731)
【分类号】：F323.211

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