林业科学2016，Vol.52Issue(5)：26-36,11.DOI:10.11707/j.1001-7488.20160504
黑龙江省穆棱东北红豆杉林物种组成与群落结构
Species Composition and Community Structure of a Taxus cuspidata Forest in Muling Nature Reserve of Heilongjiang Province,China
摘要
Abstract
[Objective]Taxus cuspidata is a tertiary relic species and the national level endangered plants. The species composition and community structure of T. cuspidata forestand the spatial correlation between T. cuspidata and other major tree species were studied to explore the formation and maintenance mechanism of community biodiversity. [Method]According to the field protocol of the 50 hm2 plot in Panama ( Barro Colorado Island,BCI) ,a 25 hm2 plot was established in 2014 in Muling National Nature Reserve of Heilongjiang Province. All woody plants with diameter at breast height (DBH) ≥ 1 cm were mapped,tagged,and identified to species. I (DBH < 10 cm),II (10≤DBH <30 cm),III ( DBH≥ 30 cm) . [Result]In the 2014 census,we documented 57 woody species with 63 877 individuals,belonging to 38 genera and 22 families. The mean DBH of all trees was 7. 83 cm,all species were found when sampling area was set as 21 hm2 . The DBH distribution of all individuals showed a reversed“J”type. The DBH distributions of the T. cuspidata and Corylus mandshurica were approximate normal and“L”type,respectively,other major species showed reversed“J”type,including Tilia amurensis,Acer mono,Acer barbinerve,Acer tegmentosum,Betula costata,Abies nephrolepis and Pinus koraiensis. Within a scope of less than 50 m,Tilia amurensis,Acer mono,Corylus mandshurica,Acer tegmentosum, Betula costata displayed a gathered distribution,Abies nephrolepis,Acer barbinerve,T. cuspidata first displayed a gathered distribution,followed by random distribution and uniform distribution. The distribution pattern of Pinus koraiensis fluctuated between aggregate distribution and random distribution. T. cuspidata and Acer mono were negatively correlated at small spatial scales (1,3,5 m),and with the increase of spatial scale,became independent of each other,and went positively correlated when the spatial was larger than 30 m. T. cuspidata was negatively correlated with five species in different spatial scales,including Acer barbinerve,Acer tegmentosum,Betula costata,Corylus mandshurica and Pinus koraiensis. Generally. T. cuspidata was negatively correlated with Abies nephrolepis,but showing independent of each other at few scales. In contrast,T. cuspidata was independent with Tilia amurensis at most scales,and showing negative correlation at few scales. [Conclusion]T. cuspidata forest had a relatively high species richness. Sapling regeneration of most species was fairly good,but very poor for T. cuspidata. Spatial distribution of species was significantly correlated with habitat,and the species showed different habitat preferences. T. cuspidata may be a niche differentiation with some species,including Pinus koraiensis,Abies nephrolepis,Tilia amurensis,Acer tegmentosum,Corylus mandshurica,Betula costata and Acer barbinerve.关键词
东北红豆杉/物种组成/径级结构/空间分布格局/空间关联Key words
Taxus cuspidata/species composition/size class structure/spatial distribution pattern/spatial correlation分类
农业科技引用本文复制引用
刁云飞,金光泽,田松岩,刘延坤,刘玉龙,韩丽冬,李云红..黑龙江省穆棱东北红豆杉林物种组成与群落结构[J].林业科学,2016,52(5):26-36,11.基金项目
中央高校基本科研业务费专项资金(DL13EA05) （DL13EA05）
黑龙江省财政厅项目(2013－6scz)。 （2013－6scz）
