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[1]ZENG Yue-e,YUE Yong-jie,ZHANG Yong-gang,et al.Study on the Community Structure and Diversity of Species of Betula platyphylla Communities in Tulihe[J].Research of Soil and Water Conservation,2013,20(03):155-160,166.

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Study on the Community Structure and Diversity of Species of Betula platyphylla Communities in Tulihe

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 03 Page number: 155-160,166 Column: Public date: 2013-06-28

Title:: Study on the Community Structure and Diversity of Species of Betula platyphylla Communities in Tulihe

Author(s):: ZENG Yue-e¹, YUE Yong-jie¹, ZHANG Yong-gang², ZHANG Hong-xing³; 1. Inner Mongolia Agricultural University, Hohhot 010020, China;
2. Tulihe Forestry Bureau, Yakeshi, Inner Mongolia 022167, China;
3. Tulihe Meteorological Bureau, Yakeshi, Inner Mongolia 022167, China

Keywords:: community structure; species diversity; Betula platyphylla; Tulihe

CLC:: S792.153

DOI:: -

Abstract:: A study was conducted on the species composition, diameter at breast height, tree height, distribution patterns and species diversity of Betula platyphylla community in Tulihe Yulin Forest Farm in Center of Daxinganling. The results showed that:(1) the species composition of Betula platyphylla community is simple, there are Aspens and Betula platyphylla in communityⅠ, there is only Betula platyphylla in communityⅡ, there are Betula platyphylla, Aspens, Larix gmelinii and Salix koreensis in CommunityⅢ, stand density is the greatest with 1 760 strain per hectare in communityⅡ, while it is minimum with 1 660 strain per hectare in communityⅢ; (2) the horizon and vertical structures of Betula platyphylla communities are reflected clearly by DBH and tree height, DBHs have three distribution patterns which are truncated normal distribution, skewed normal distribution and Bimodal mountain shape distribution, tree heights have two distribution patterns which are negatively distribution and unimodal mountain shape distribution; (3) distribution patterns of Betula platyphylla communities belong to the aggregate distribution, the order of the aggregation degree follows as communityⅡ > communityⅢ > communityⅠ; (4) the species numbers in Betula platyphylla communities ranged from 15 to 18. Simpson index and Shannon-Wiener index of Betula platyphylla communities are showed that communityⅢ > communityⅠ > communityⅡ. According to the vertical structure of three Betula platyphylla communities, we can conclude that species richness and diversity index have an order with herb layer > shrub layer > tree layer. The communityⅢ, however, showed that herb layer > tree layer > shrub layer.

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