中国东北地区白桦林植被生态学的研究——白桦林在两类植被区域内景观斑块特征比较

以不同植被类型作为景观单元（ 斑块） ，测度景观斑块大小、景观破碎度、景观斑块的频度、密度、比例、多样性、均匀度及优势度，分析了“温性针阔混交林植被区域”的黄泥河、汪清、柴河等地植被景观样区、大兴安岭“寒温性针叶林区域”的新林植被景观样区含有白桦（ Ｂｅｔｕｌａ ｐｕｌａｔｙ ｐｈｙｌｌａ） 林植被的景观特征．景观特征的形成，受历史上的人为干扰、自然干扰因素影响，必须重视景观水平上的植被管理与规划．

Vegetation Ecology of Communities Dominated by Betula pulatyphylla in Northeastern China--Vegetation Landscape Characteristics of Communities Dominated by Betula pulatyphylla

Based on different vegetation types (aslandscape unit) and foresttype map data, through analyzing thelandscapecomposition ,landscapefragmentation,landscape patch size,fre quency,density,proportion ,diversity,evenness and dominance,this paper dealt with theland scape characteristicsoftemperateconiferousand broadleaved mixedforestssampledin Huangnihe, Wangqing ,Chaihe,and thelandscape characteristics ofcold temperate coniferousforestssampled in Xinlin of Daxing’an Mts.wherecom munities dominated by Betula pulatyphylla .The devel opment oflandscape characteristicsisaffected mainly by anthropologicaland naturalfactors.Cur rentvegetation issuggested to be managed atlandscapelevel.