基于地形的尖峰岭林区土地利用景观面积影响研究

Based on the terrain of the land use landscape impact studies in Jianfengling forest zone

该文利用ArcGIS 10.2中Patch Analyst工具计算分析得出矢量数据情况下地类景观面积;利用数据转换工具获得30m×30m地类和DEM的TIFF格式数据,将土地利用景观栅格数据和DEM栅格导入Fragstats4.2中,获得二维和三维地类景观面积。得出以下结论:尖峰岭林区生态环境保护较好,天然林分布较多,乔木林地和混交林地是林区主要景观类型。由于数据格式转换,尖峰岭林区景观总面积减少,但各地类景观面积发生变化差异较大;三维栅格数据与矢量数据相比,由于地形变化影响,尖峰岭林区总面积减少,但各地类景观面积发生变化趋势差异较大;同一栅格粒度条件下,受地形影响,三维景观面积相比二维景观面积将有所增加,且对优势景观的面积增加量最多,劣势景观增加量较小,甚至不发生变化。通过研究分析,为尖峰岭林区的科学经营管理提供指导和参考。

In this study,ArcGIS 10.2 in Patch Analyst vector data calculation and analysis tool case Shimoji class landscape area;use data conversion tool to get 30m ＆#215; 30m class and TIFF format data of DEM, land use and landscape raster data import raster DEM Fragstats4.2 in a two-dimensional and three-dimensional case ambulation class landscape area.Forest in Jianfengling ecological environmental protection is better,more nat-ural forests,trees woodland and mixed forests is a major landscape types. Due to data format conversion,point-ed peak Jianfengling forest landscape total area reduced, but changes around class landscape area occurred is differences larger;three dimensional gate grid data and vector data compared,due to terrain changes effect, pointed peak Jianfengling forest total area reduced,but around class landscape area occurred changes trend differences larger,At same gate grid grain degrees conditions,by terrain effect,three dimensional landscape area compared II dimension landscape area will has increased, and on advantage landscape of area increased volume up, disadvantage landscape increased volume smaller, even not occurred changes. Through research and analysis provide guidance and references to scientific management of the forest in Jianfengling.