基于ArcGIS和DEM模型的耕地利用格局分析

发布时间：2018-03-23 14:02

本文选题：耕地利用格局　切入点：农户经营行为　出处：《上海国土资源》2016年03期

【摘要】：基于DEM模型和GIS平台,运用景观生态学基本原理,探究黄土高原小流域不同地形条件下的耕地利用格局以及农户经营行为特征,为促进区域农业的可持续发展奠定基础。结果表明:(1)流域内91.64%的耕地集中于1300m高程范围内,90.61%的耕地分布于15°的宜耕区。(2)在1200m高程范围内,15°的宜耕区内,耕地类型多样,斑块数最多,内部的斑块组合最复杂;在1200~1300m高程范围内,15°~25°坡度区内斑块的连通性好;1300m高程范围内,25°坡度地带内,斑块间的干扰性小,景观的破碎化程度也略高。(3)耕地利用的破碎化现状,深刻影响着农户水保行为、种植行为及兼业行为,使得农户经营行为差异化、区域化明显。因此,流域应加强土地综合整治力度,调整农业经营模式,为耕地资源的高效集约利用及农业规模化经营创造条件。
[Abstract]:Based on the DEM model and GIS platform, using the basic principles of landscape ecology, this paper probes into the pattern of cultivated land utilization and the characteristics of farmers' management behavior under different topographic conditions in the small watershed of the Loess Plateau. The results showed that 91.64% of the cultivated land in the watershed was concentrated in the range of 1300m elevation, 90.661% of the cultivated land was distributed in the suitable tillage area of 15 掳, and the cultivated land was varied in the suitable cultivated area of 15 掳within the height of 1200m, the results showed that 91.64% of the cultivated land in the basin was concentrated in the range of 1300m elevation, and 90.61% of the cultivated land was distributed in the suitable cultivated area of 15 掳. The number of patches is the most, and the internal patch combination is the most complex, and in the range of 1 200 ~ 1 300 m elevation, the connectivity of patches is good in the range of 15 掳~ 25 掳slope, and the disturbance between patches is small in the 25 掳slope area of 1 300 m elevation. The degree of fragmentation of landscape is also slightly higher. (3) the current situation of fragmentation of cultivated land use has a profound impact on farmers' soil and water conservation behavior, planting behavior and concurrent business behavior, which makes farmers' management behavior different and regionalization obvious. The basin should strengthen the comprehensive regulation of land, adjust the agricultural management model, and create conditions for the efficient and intensive utilization of cultivated land resources and the large-scale management of agriculture.
【作者单位】：河北盛世圆福项目管理集团有限公司;山西农业大学资源环境学院;南京农业大学土地管理学院;
【基金】：国土资源部公益性项目行业科研专项(2009HX01)
【分类号】：P208;F301.2

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