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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (6): 1699-1704    DOI: 10.7522/j.issn.1000-694X.2013.00254
Biology and Soil     
Biomass Estimation Models of Four Shrub Species at Southeastern Edge of the Tengger Desert
YANG Hao-tian, LI Xin-rong, WANG Zeng-ru, JIA Rong-liang, LIU Li-chao, GAO Yan-hong, Li Gang
Shapotou Desert Experiment and Research Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
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Abstract  

Biomass estimation modeling is one of the most important methods in biomass estimation of shrubs. In this paper, shrubs volume (V) was used as independent variable to establish the models between V and the leaf, current year branch, aging branch, above-ground, under-ground and total biomass for four single common shrubs and their mixed samples in desert area, respectively, at the southeastern edge of the Tengger Desert, China. The optimal models were selected according to the largest determination coefficient (R2), the smallest standard error of estimate(SEE) and significance level (p<0.05). Results showed that the optimal biomass models for all organs, above-ground, under-ground and the whole plant of single species and mixed species were mostly expressed by power functions (W=aVb), only a few can be expressed by cubic equations (W=a+bV+cV2+dV3). The p values of all models reached a significant level (p<0.05) and R2 ranged between 0.69-0.92. Those models can be used to estimate actual biomass of shrubs due to their good effectiveness. However, there existed differences in optimal models among different species or organs. Models should be chosen according to the practical conditions in estimating biomass of shrubs. The effects of mixed models are lower than that of single species. The optimal biomass models are expected to contribute to estimate biomass and carbon storage of different carbon pools for desert ecosystems.

Key words:  shrubs      biomass      estimation model      desert ecosystem      southeastern edge of the Tengger Desert     
Received:  29 January 2013      Published:  03 March 2013
ZTFLH:  Q94-32  

Cite this article: 

YANG Hao-tian, LI Xin-rong, WANG Zeng-ru, JIA Rong-liang, LIU Li-chao, GAO Yan-hong, Li Gang. Biomass Estimation Models of Four Shrub Species at Southeastern Edge of the Tengger Desert. JOURNAL OF DESERT RESEARCH, 2013, 33(6): 1699-1704.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00254     OR     http://www.desert.ac.cn/EN/Y2013/V33/I6/1699

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