| 基于主成分分析的森林景观格局研究 |
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| 引用本文： | 李放,邓华锋.基于主成分分析的森林景观格局研究[J].中南林业科技大学学报,2020(3):71-78. |
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| 作者姓名： | 李放 邓华锋 |
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| 作者单位： | 北京林业大学林学院 |
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| 基金项目： | 国家林业公益性行业科研专项（201204510）;北京市教育委员会科学研究与科研基地建设项目（省部共建重点实验室） |
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| 摘 要： | 【目的】为更好地了解洪田村森林景观结构,以2011年和2016年小班调查数据为基础,分析研究洪田村的森林景观格局。【方法】以永安市洪田村2011年实地调查小班数据及2016年二类调查数据为基础,将选取的19个景观指数从内部细化为三类,并采用主成分分析法选取了12个最能表征洪田村森林景观格局的景观指数;借助地理信息系统(Arc GIS),分析了洪田村的森林景观结构及功能。【结果】1)主成分分析筛选的12种景观指数在其所属类别上的因子载荷值均在90%以上,具有很好的代表性,可作为洪田村森林景观格局分析的指标。2)洪田村森林景观要素组成类型单一且分布不均,杉木和硬阔叶树种为主的景观格局占主导优势。3)斑块形状简单抗干扰能力差,景观整体异质性较高。4)灌木林和软阔类树种较低的边缘密度(ED)表明这两种森林景观与其他类型景观之间的能流、物流交换低。【结论】未来对洪田村进行森林景观规划与设计时应着重调整不同森林景观类型的空间布局,合理配置乡土树种(杉木、马尾松)、引进树种(桉树)、灌木林及其他树种的比例。
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| 关 键 词： | 森林景观 景观格局指数 景观要素 景观异质性 |
Research of forest landscape pattern based on principal component analysis |
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| LI Fang,DENG Huafeng.Research of forest landscape pattern based on principal component analysis[J].Journal of Central South Forestry University,2020(3):71-78. |
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| Authors: | LI Fang DENG Huafeng |
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| Institution: | (College of Forestry,Beijing Forest University,Beijing 100083,China) |
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| Abstract: | 【Objective】In order to better understand the forest landscape structure of Hongtian village,based on the small class survey data of 2011 and 2016,analyze and study the forest landscape pattern of Hongtian village.【Method】Based on the data from forest resources survey in Yongan city of Hongtian village in 2011 and 2016,under support of Geographic Information System,the 19 landscape indices were calculated and divided into three categories with Patch Analyst 10 software.We analyze the composite elements,patch characteristics and heterogeneity of forest landscape by selecting 12 landscape indexes withthe principal component analysis.【Result】1)The 12 landscape indices selected by principal component analysis have a high representative and can be used as an indicator of forest landscape pattern in Hongtian Village;2)The results of landscape pattern show that the forest landscape elements is single and unevenly distributed.And the landscape pattern dominated by Chinese fir and hard-broadleaf trees.3)The patch shape is simple which made the anti-interference ability is poor,and the whole landscape presented with strong heterogeneity.4)The lower edge density(ED)of shrub and soft-broadleaf trees indicates that the flow exchange between the two landscapes are low.【Conclusion】In the future,we should focus on regulating the spatial distribution of forest landscape types,and rationally configuring the proportion of native-trees(fir,masson pine),introduced-trees(eucalyptus)and other tree species. |
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| Keywords: | forest landscape index of landscape pattern landscape elements heterogeneity |
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