基于GIS的黄龙山林区森林景观格局分析  

GIS based analysis on forest landscape pattern in Huanglong Mountain

作　　者：孙楠[1] 王京民[2] 赵鹏祥[1] 李敏[1] 王卫利[3] 

机构地区：[1]西北农林科技大学林学院,陕西杨凌712100 [2]国家林业局西北林业调查规划设计院,陕西西安710048 [3]华县林业局,陕西渭南714100

出　　处：《西北农林科技大学学报（自然科学版）》2013年第9期61-67,共7页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家自然科学基金项目(30972296)

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。[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 for- est 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 cal- culating 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 2ha-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 connec- tivity 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.

关 键 词：FRAGSTATS 3 3软件 森林景观格局 GIS 黄龙山林区 

分 类 号：P901[天文地球—自然地理学]