摘要
以木兰林管局八英庄林场拐磨沟流域的林相图、遥感影像及二类调查数据为基础,利用Arc GIS10.0进行图形及数据处理分析。一级景观分类中,总斑块数为8个斑块,景观总面积为342.76 hm2,其中有林地占景观总面积比例最大;斑块形状指数和分维数最大的为未成林地,较小的是裸沙滩;斑块密度最大的为有林地,最小的是未成林地和裸沙滩;破碎度最大的是裸沙滩,最小的为有林地;景观多样性指数为0.57,最大多样性指数为0.92,相差较大,均匀度为0.62,一级景观分类斑块分布较不平衡。二级景观分类中,斑块总数合计为19块,其中在有林地中,占总景观面积最大的为落叶松林;斑块形状指数和分维数较大的为桦树林,较小小的为山杨林;斑块密度最大的为落叶松林,最小的为山杨林;破碎度最大的为山杏林,最小的为桦树林;二级景观分类景观多样性指数为0.79,最大多样性指数为0.89,两者相差不大,而且均匀度为0.89接近1,因此该流域二级景观分类斑块分布比较平衡。
Based on the forest map, remote sensing image and the date of forest resource survey in Baying- zhuang forest farm, Mulan Forestry Administration, processing and analysis of date were accomplished by using ArcGISIO. 0, combined with principle and method of landscape ecology. According to the first-level landscape classification, Guaimogou valley was divided into 8 patches. The total area of Guaimogou was 342. 76 hm2 , the proportion that forest land accounted for of the total area was the largest. The largest patch shape index and fractal dimension was not into the forest, the smallest was nude beach. The largest porosity index was forest land, the smallest was not into the forest and nude beach. The largest fragmenta- tion was nude beach and the smallest was forest land. The landscape diversity index was 0. 57, and the largest diversity index was 0. 92. They have a lot of difference. The evenness index was 0. 62 that means the first-level landscape is imbalance. According to the second-level landscape classification, Guaimogou valley was divided into 19 patches. For the forest land ,the proportion that larch forest accounted for of the total area was the largest. The largest patch shape index and fractal dimension was birch forest, the smal- lest was poplar forest. The largest porosity index was larch forest, the smallest was poplar forest. The lar- gest fragmentation was almond forest and the smallest was birch forest. The landscape diversity index was 0. 79, the largest diversity index was 0. 89, and they are similar. The evenness index was 0. 89 close to 1, so the second-level landscape is balancing.
出处
《林业资源管理》
北大核心
2015年第6期104-110,共7页
Forest Resources Management
关键词
森林景观
景观格局指数
景观格局特征
forest landscape, landscape pattern index ,forest landscape characteristics
