IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2013  > Vol10 No.6
Biomass Allocation Patterns of Alpine Grassland Species and Functional Groups along a Precipitation Gradient on the Northern Tibetan Plateau
WU Jian-shuang; SHEN Zhen-xi; ZHANG Xian-zhou; SHI Pei-li
Corresponding AuthorSHI Pei-li
2013-12
Source PublicationJournal of Mountain Science
Volume10Issue:6Pages:1097-1108
AbstractVariations in the fractions of biomass allocated to functional components are widely considered as plant responses to resource availability for grassland plants. Observations indicated shoots isometrically relates to roots at the community level but allometrically at the species level in Tibetan alpine grasslands. These differences may result from the specific complementarity of functional groups between functional components, such as leaf, root, stem and reproductive organ. To test the component complementary responses to regional moisture variation, we conducted a multi-site transect survey to measure plant individual size and component biomass fractions of common species belonging to the functional groups: forbs, grasses, legumes and sedges on the Northern Tibetan Plateau in peak growing season in 2010. Along the mean annual precipitation (MAP) gradient, we sampled 70 species, in which 20 are in alpine meadows, 20 in alpine steppes, 15 in alpine desert-steppes and 15 in alpine deserts, respectively. Our results showed that the size of alpine plants is small with individual biomass mostly lower than 1.0 g. Plants keep relative conservative component fractions across alpine grasslands at the individual level. However, the complementary responses between functional components to moisture variations specifically differ among functional groups. These results indicate that functional group diversity may be an effective tool for scaling biomass allocation patterns from individual up to community level. Therefore, it is necessary and valuable to perform intensive and systematic studies on identification and differentiation the influences of compositional changes in functional groups on ecosystem primary services and processes.
KeywordBiomass Fractions Complementary Response Functional Components Functional Groups Changtang Plateau
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6538
CollectionJournal of Mountain Science_Journal of Mountain Science-2013_Vol10 No.6
Corresponding AuthorSHI Pei-li
Recommended Citation
GB/T 7714
WU Jian-shuang,SHEN Zhen-xi,ZHANG Xian-zhou,et al. Biomass Allocation Patterns of Alpine Grassland Species and Functional Groups along a Precipitation Gradient on the Northern Tibetan Plateau[J]. Journal of Mountain Science,2013,10(6):1097-1108.
APA WU Jian-shuang,SHEN Zhen-xi,ZHANG Xian-zhou,&SHI Pei-li.(2013).Biomass Allocation Patterns of Alpine Grassland Species and Functional Groups along a Precipitation Gradient on the Northern Tibetan Plateau.Journal of Mountain Science,10(6),1097-1108.
MLA WU Jian-shuang,et al."Biomass Allocation Patterns of Alpine Grassland Species and Functional Groups along a Precipitation Gradient on the Northern Tibetan Plateau".Journal of Mountain Science 10.6(2013):1097-1108.
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