基于耗费距离模型的沿黄生态带景观格局优化

Optimization of Landscape Pattern along the Yellow River Ecological Belt Base on Accumulative Cost Distance Model

文章以沿黄河南岸地区作为研究区域,应用RS和GIS技术,对研究区域Landsat Oli 8遥感影像进行解译分析,在此基础上,以景观安全为出发点,构建景观流运行阻力面,采用累积耗费距离模型,研究区域景观结构与生态功能,提取生态源地、生态廊道和生态节点等景观要素,最后提出连通生态廊道、加强生态节点功能的景观格局优化方案,为区域生态空间规划提供依据。

The zone along the southern bank of the Yellow River is chosen as research district. With application of RS technology and GIS technology, according to the visual interpretation of Landsat Oli 8 images, landscape safety is assessed. Landscape flow resistance surface is built based on the assessment. According to cumulative distance model, the regional landscape structure and ecological function is studied, and the landscape elements such as ecological source, ecological corridor and ecological node are extracted. At last, the optimization of landscape pattern that connects ecological corridor and ecological node is proposed, which provides the basis for the regional ecological spatial planning.