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Relationship between species diversity and biomass of eucalyptus plantation in Guangxi, south China |
Yuanguang WEN1,2(), Fang CHEN2, Shirong LIU3, Hongwen LIANG1, Chang'an YUAN4, Hongguang ZHU1 |
1. Forestry College, Guangxi University, Nanning 530005, China; 2. College of Life Science, Sichuan University, Chengdu 610064, China; 3. Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing 100091, China; 4. Guangxi Normal University, Nanning 530001, China |
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Abstract To reveal the relationship between species diversity and biomass in a eucalyptus (Eucalyptus urophylla × E. grandis) plantation located in the Dongmen State Forestry Farm of Guangxi, south China, 18 sample plots were established and the total biomass, arbor layer biomass and undergrowth biomass of communities were subsequently harvested. The results were as follows: 1) Species richness in eucalypt plantation had remarkable positive correlation with biomass of arbor layer, undergrowth and community (α=0.001), its correlation coefficients were 0.6935, 0.7028 and 0.7106 respectively. 2) Leaf area index (LAI) had remarkable positive correlation with species richness and undergrowth biomass (α=0.001). Its correlation coefficients were 0.7310 and 0.6856, respectively. 3) Arbor layer biomass had remarkable correlation with soil organic matter and hydrolysable N, its correlation coefficients was 0.6416 and 0.6203 respectively. Species richness had remarkable correlation with soil organic matter and correlation coefficient was 0.6359. Among them, the correlation was significant at the 0.1 level. Undergrowth biomass had little correlation with nine soil nutrients and correlation coefficients were under 0.4. To sum up, species diversity was advantageous to the promotion of the biomass of the eucalyptus plantation, and the variation of LAI and soil nutrient in small-scales could result in the difference of species diversity and biomass in different sample plots.
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Keywords
eucalyptus plantations
species diversity
biomass
soil nutrient
leaf area index
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Corresponding Author(s):
WEN Yuanguang,Email:wenyg@263.net
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Issue Date: 05 June 2009
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