| 摘要: |
| 【目的】分析黄龙山林区的森林景观格局，揭示森林景观受环境因素的影响规律。【方法】以黄龙山林业局2006年森林资源二类调查数据为基础，在ArcGIS的支持下，利用Fragstats 3.3软件，采用土地利用类型和优势树种组2级景观要素，选取10个景观指数对研究区域森林景观的要素组成、斑块特征、异质性和空间分布等进行分析。【结果】在以土地利用类型和优势树种组为依据的2级森林景观类型体系中，有林地面积占黄龙山林区总面积的90%以上，是主要的土地利用类型。在以有林地为基质的森林景观格局中，栎类具有很强的优势性，呈现团聚状态；油松的异质性最高；栎类、油松、桦类处于扩张状态。【结论】黄龙山林区森林景观格局受人类活动的影响不明显，各树种斑块都分别表现出与之生态和林学特性相适应的状态。 |
| 关键词: Fragstats 3.3软件 森林景观格局 GIS 黄龙山林区 |
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| 基金项目:国家自然科学基金项目(30972296) |
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| GIS based analysis on forest landscape pattern in Huanglong Mountain |
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| Abstract: |
| 【Objective】The study was to analyze forest landscapes in Huanglong Mountain to show the influence of the environmental factors on forest landscapes.【Method】Based on the data collected from forest resources survey in Huanglong Mountain in 2006 with the support of ArcGIS interface,we analyzed the composite elements,patch characteristics,heterogeneity and spatial distribution of forest landscape by calculating 10 landscape indexes with Fragstats 3.3 software,using land use types and dominant tree species landscape elements.【Result】Using the land use and dominant tree species as the 2nd-class forest landscape standard and with afforested land as substrate in landscape pattern,the area of afforest landscape accounted for more than 90% of the total area.Quercus played a dominant role and had the largest landscape connectivity index.Chinese pine had the strongest heterogeneity.Quercus,Chinese pine and birch were on their extended state.【Conclusion】The effects of human activities on Huanglong Mountain forest landscape was not significant.Each specie correlated well with its related ecological and forest characteristic states. |
| Key words: Fragstats 3.3 software forest landscape pattern GIS forest in Huanglong Mountain |
