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山西庞泉沟自然保护区森林群落物种多样性

李旭华1,邓永利2,张峰1,2**,董刚1,2,李世广3   

  1. 1山西大学黄土高原研究所, 太原 030006; 2山西大学生命科学学院, 太原 030006; 3山西庞泉沟国家级自然保护区-管理局, 山西交城 033100)
  • 出版日期:2013-07-10 发布日期:2013-07-10

Species diversity of forest communities in Pangquangou Nature Reserve, Shanxi of China.

LI Xu-hua1, DENG Yong-li2, ZHANG Feng1,2**, DONG Gang1,2, LI Shi-guang3   

  1. (1Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China; 2School of Life Science, Shanxi University, Taiyuan 030006, China; 3Pangquangou National Nature Reserve Administration, Jiaocheng 033100, Shanxi, China)
  • Online:2013-07-10 Published:2013-07-10

摘要:

在对山西庞泉沟自然保护区森林群落进行数量分类的基础上,运用丰富度指数、物种多样性指数和均匀度指数对保护区内森林群落的物种多样性进行了研究,并对森林群落各层片之间的物种多样性进行了相关性分析。结果表明:(1)森林群落15个群丛的丰富度指数、物种多样性指数和均匀度指数能很好地反映各群丛多样性变化规律。(2)各群丛的丰富度指数和物种多样性指数总体上呈现草本层>灌木层>乔木层,草本层的均匀度最小,大多数森林群落乔木层和灌木层的均匀度比较接近。(3)Patrick指数、Simpson指数、Shannon指数以及Pielou指数和Alatalo指数之间表现极显著差异性(P<0.01)。(4)群丛3(华北落叶松-土庄绣线菊+美蔷薇-东方草莓群丛)灌木层和草本层之间呈显著负相关(r=-0.643,P<0.05);群丛8(白桦+山杨-灰栒子+美蔷薇-中亚苔草群丛)乔木层和灌木层呈显著负相关(r=-0.458,P<0.05),灌木层和草本层则呈显著正相关(r=0.404,P<0.05);群丛11(白杄-中亚苔草+烟管头草)的乔木层和草本层之间呈显著负相关(r=-0.949,P<0.05)。
 

关键词: 连作人工林, 酚酸, 宏基因组测序, 磷酸酶基因, 解磷微生物

Abstract: Based on the numerical classification of the forest communities in Pangquangou Nature Reserve of Shanxi by  Two-Way Indicator Species Analysis (TWINSPAN), and by using the indices of richness, species diversity, and evenness, this paper studied the species diversity of the forest communities within the Reserve, and by using Spearman’s rank correlation coefficient, analyzed the relationships among the species diversity in the tree, shrub, and herbaceous layers of the communities. The richness, species diversity, and evenness indices of the 15 associations of the communities well reflected the diversity differences of all the associations. Overall, the richness and species diversity indices of most associations presented the sequence of herbaceous layer > shrub layer > tree layer, and the evenness index was the lowest in herb layer but had less difference in tree and shrub layers. There existed significant differences (P<0.01) among the Patrick index, Simpson index, and Shannon index and between the Pielou index and Alatalo index. In Ass. 3 (Larix principisrupprechtii-Spiraea pubescens+Rosabella-Fragaria orientalis), there was a significant negative correlation (r=-0.643, P<0.05) between shrub and herbaceous layers; in Ass. 8 (Betula platyphylla+Populus davidiana-Cotoneaster acutifolius+R.bella-Carex stenophylloides), shrub layer had a significant negative correlation (r=-0.458, P<0.05) with tree layer but a significant positive correlation (r=0.404, P<0.05) with herbaceous layer; in Ass. 11(Picea meyeri-C. stenophylloides+Carpesium cernuum), tree layer was significantly negatively correlated with herbaceous layer (r=-0.949, P<0.05).

Key words: phenolic acids, metagenome sequencing, phosphate-solubilizing microorganisms, successive rotation plantation, phosphatase gene.