基于DEM数据分析黔西北自然保护地森林空间分布特征与地形因子关系——以贵州毕节国家森林公园为例

Analysis of the Relationship between Forest Spatial Distribution Characteristicsand Topographic Factors in Northwest Guizhou Nature Reserve Basedon DEM Data——Taking Bijie National Forest Park in Guizhou as an Example

以2021年林草生态综合监测的小班数据为基准提取贵州毕节国家森林公园范围内森林区划小班作为研究区,结合数字高程模型(DEM)通过ArcMap 10.8获取高程、坡度和坡向,对研究区不同高程级、坡度级及坡向级的森林类型进行分析,探讨以研究区为代表的黔西北自然保护地森林空间分布特征与地形因子之间的关系,对自然保护地的保护利用规划具有重要意义。结果表明:研究区森林总面积3690.55 hm ^(2),在1501~2100 m密集分布,占整体的96.66%;而在6°~25°地段占72.70%;在半阳坡、半阴坡占53.59%,分别超过了25%。

Based on the subclass data of the comprehensive monitoring of forest and grass ecology in 2021,subclasses of forest zoning in Bijie National Forest Park in Guizhou Province were extracted as the study area.The elevation,slope and slope direction were obtained by ArcMap 10.8 combined with the digital elevation model(DEM),and the forest types of different elevation,slope and slope levels in the study area were analyzed.It is of great significance to study the relationship between forest spatial distribution characteristics and topographic factors in the protected areas of northwest Guizhou.The results showed that the total forest area of the study area was 3690.55 hm ^(2),which was densely distributed in 1501~2100 m,accounting for 96.66%of the whole.In the 6°~25°section,72.70%;In the semi-positive slope,semi-negative slope accounted for 53.59%,respectively more than 25%.