Dynamics of above- and below-ground biomass and C, N, P accumulation in the alpine steppe of Northern Tibet |
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Authors: | Xuyang Lu Yan Yan Jihui Fan Yingzi Cao Xiaodan Wang |
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Institution: | (1) Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China;(2) Graduate University of Chinese Academy of Sciences, Beijing, 100049, China; |
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Abstract: | The temporal dynamics of the biomass, as well as the carbon (C), nitrogen (N), phosphorus (P) concentrations and accumulation
contents, in aboveand below-ground vegetation components were determined in the alpine steppe vegetation of Northern Tibet
during the growing season of 2010. The highest levels of total biomass (311.68 g m−2), total C (115.95 g m−2), total N (2.60 g m−2), and total P (0.90 g m−2) accumulation contents were obtained in August in 2010. Further, biomass and nutrient stocks in the below-ground components
were higher than those of the above-ground components. The dominant species viz., Stipa purpurea and Carex moorcrofti had lower biomass and C, N, P accumulations than the companion species which including Oxytropis. spp., Artemisia capillaris Thunb., Aster tataricus L., and so on. |
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