基于半方差函数的银川平原土地利用强度图谱分析

应用地学信息图谱方法研究土地利用强度的空间变化规律,可以揭示土地利用强度的区位变化特征,为区域土地资源优化配置和社会经济可持续发展提供基础依据。该文以银川平原为研究区,通过土地利用遥感制图和基于半方差函数的地统计学方法,对银川平原2006年土地利用强度图谱进行了研究。研究结果表明:银川平原的土地利用强度存在明显的空间规律性,表现为南-北方向性,在银川平原中部表现明显的带状特征,南部表现明显的环状特征,银川平原的西部和北部土地利用强度较弱,土地利用强度综合指数最低值只有0.9449;各级行政中心、灌排水系统和交通网络控制着土地利用强度的空间分布格局。加强各级居民点周边地区土地利用调控与优化布局以及银川平原西部、北部中低产田的整治利用是当地土地整理工程的重点和难点。

Tupu analysis of land use intensity using semi-variancein Yinchuan Plain

Application of geo-information tupu to study the spatial variation law of the land use intensity can reveal the change features of the location of the land use intensity, and provide a basis to regional land resources optimization allocation and social-economic sustainable development. In this paper, taking Yinchuan Plain as study area, the land use intensity tupu in the 2010 was studied by land use remote sensing mapping and geo-statistics based on semi-variance. The results show that there are obvious spatial regularities in the land use intensity of the Yinchuan Plain, which displaying the South-North directional, and performing obvious characteristics of the ribbon in the middle of the Yinchuan Plain. It shows obvious ring features in the south, and the land use intensity is weak in the north and west of Yinchuan Plain. Administrative center at all levels, irrigation drainage system and transport network control the spatial distribution pattern of land use intensity. Strengthening the land use control and layout optimization of the surrounding areas at all levels settlements is the focus of the current land use management of Yinchuan plain, and strengthening remediation use of low-yielding fields in the western and northern parts of the Yinchuan Plain is the key and difficult points of the local land consolidation project.