标题:
迭部扎尕那林区乔木林景观斑块分形分析Fractal Analysis on Arbor Forest Landscape of Zha Gana Forest Area in Diebu County
作者:
齐国翠, 汤萃文, 赵士波
关键字:
森林景观, 乔木林, 分形分析, 迭部扎尕那Forest Landscape, Arbor Forest, Fractal Analysis, Diebu Zha Gana
期刊名称:
《International Journal of Ecology》, Vol.3 No.4, 2014-11-13
摘要:
在GIS技术的支持下，利用林相图及相关调查资料，采用周长-面积关系的算法对迭部扎尕那林区乔木林景观进行了分形分析。结果表明：1) 乔木林景观类型以针叶林为主，冷杉林面积占乔木林总面积的50.1%，且平均斑块面积较大，分布较为集中完整，是该林区的优势林种。云杉林平均斑块面积水平相对较低，分布较为分散，破碎化程度较高。阔叶林分布面积只占乔木林总面积的9.9%。红桦林是阔叶林中面积最大，分布较为集中的类型。2) 乔木林各林种斑块分维值整体较为接近，介于1.1~1.3之间，说明7种森林类型的斑块边界形状复杂程度相当。不同林种景观斑块分维值大小排列顺序为红桦 With the help of GIS technology, the algorithm about the relation of perimeter-area was used to do the fractal analysis of arbor landscape based on the forest map and survey data of Zha Gana Forest in Diebu. The results showed that 1) the type of arbor landscape was dominated by coniferous forest. The area of fir forest accounted for 50.1 percent of the total area of arbor, and its mean patch area was much larger with the centralized and complete distribution. So the fir was superior forest in arbor forest. The level of mean patch area of Picea asperata was relatively low with dispersed distribution and a higher degree of fragmentation. 2) At the whole level, the fractal dimension for each forest was very close, ranging from 1.1 - 1.3. It explained that the shape complexity of seven species of arbor landscape patches were same. The sequence of fractal dimension for different forest landscape patches is Betula albo-sinensis