孟家岗林场森林景观结构动态分析  

The Analysis of the Dynamics of the Landscape Structure of Mengjiagang Forest Farm

作　　者：王磊[1] 贾炜玮[1] 李凤日[1] 

机构地区：[1]东北林业大学林学院,哈尔滨150040

出　　处：《植物研究》2008年第4期497-502,共6页Bulletin of Botanical Research

基　　金："948"项目"森林景观生态规划与空间优化技术引进"(2005-4-05)项目资助

摘　　要：以黑龙江省孟家岗林场1989年和2006年两期森林资源二类调查数据为基础,结合林相图,利用GIS技术和景观格局分析软件包FRAGSTATS进行分析,提取森林景观要素内部结构指标等景观指数,并对孟家岗林场近20年的景观格局的动态特征进行了系统的分析。研究结果表明:由于孟家岗林场森林景观要素类型的增加以及多样性和优势度指数的增高,使得森林景观的分离度和破碎度也在增加;虽然落叶松林为该研究区域的优势景观要素类型,但其优势度却在逐渐降低,表明落叶松景观要素在向其它景观要素类型转化;首次对孟家岗林场进行景观内部结构指数分析,表明阔叶树和混交林景观要素类型是以成、过熟林为主,三大主要针叶树种以中龄林和近熟林为主。人为干扰的加剧,使针叶林年龄结构趋于单一化。This paper, basing on forest type map and forest management survey database of 1989 and 2006 and on a GIS platform and the software of FragStats, calculates the index of landscape pattern, and systematically analyies the dynamic character of the landscape spatial structure of Mengjiagang Forest Farm Heilongjiang Province with the method of landscape index. The result indicates that with the landscape elemental types of the study area increases, and landscape diversity index and landscape dominance increases, the fragment index and isolation index of forest landscape increases. Larix gmelinii （Rupr.） Rup is the dominating landscape element type in this region, but its landscape dominance is decreasing gradually, so the result implies that L. gmelinii（ Rupr. ）Rup landscape element translate into other landscape elements. This paper firstly applied with landscape internal structural index analysis the dynamics of forest landscape of Mengjiagang Forest Farm, and the result implies that Broad-leaved forest and Mixed forest landscape were mainly made of mature and overmature age. Three main coniferous forest landscape elements are mainly made of middle age and near-mature age. Human activities are the main influence factor on forest, which accelerate the simplification of age structure of coniferous forest.

关 键 词：景观空间格局 景观动态 森林景观内部结构指数 

分 类 号：S759.91[农业科学—森林经理学] TU37[农业科学—林学]