Ma Weiling1; Shi Peili2; Li Wenhua2; He Yongtao2; Zhang Xianzhou2; Shen Zhenxi2; Chai Siyue1
Source Publicationsciencechinalifesciences
AbstractPlant traits and individual plant biomass allocation of 57 perennial herbaceous species, belonging to three common functional groups(forbs, grasses and sedges)at subalpine(3700 m ASL), alpine(4300 m ASL)and subnival(≥5000 m ASL)sites were examined to test the hypothesis that at high altitudes, plants reduce the proportion of aboveground parts and allocate more biomass to belowground parts, especially storage organs,as altitude increases,so as to geminate and resist environmental stress. However, results indicate that some divergence in biomass allocation exists among organs. With increasing altitude, the mean fractions of total biomass allocated to aboveground parts decreased. The mean fractions of total biomass allocation to storage organs at the subalpine site(7%±2%S.E.)were distinct from those at the alpine(23%±6%)and subnival(21%±6%) sites, while the proportions of green leaves at all altitudes remained almost constant. At 4300 m and 5000 m, the mean fractions of flower stems decreased by 45%and 41%, respectively, while fine roots increased by 86%and 102%, respectively. Specific leaf areas and leaf areas of forbs and grasses deceased with rising elevation, while sedges showed opposite trends. For all three functional groups, leaf area ratio and leaf area root mass ratio decreased, while fine root biomass increased at higher altitudes. Biomass allocation patterns of alpine plants were characterized by a reduction in aboveground reproductive organs and enlargement of fine roots, while the proportion of leaves remained stable. It was beneficial for high altitude plants to compensate carbon gain and nutrient uptake under low temperature and limited nutrients by stabilizing biomass investment to photosynthetic structures and increasing the absorption surface area of fine roots. In contrast to forbs and grasses that had high mycorrhizal infection, sedges had higher single leaf area and more root fraction, especially fine roots
Document Type期刊论文
Recommended Citation
GB/T 7714
Ma Weiling,Shi Peili,Li Wenhua,et al. changesinindividualplanttraitsandbiomassallocationinalpinemeadowwithelevationvariationontheqinghaitibetanplateau[J]. sciencechinalifesciences,2010,53(9):1142.
APA Ma Weiling.,Shi Peili.,Li Wenhua.,He Yongtao.,Zhang Xianzhou.,...&Chai Siyue.(2010).changesinindividualplanttraitsandbiomassallocationinalpinemeadowwithelevationvariationontheqinghaitibetanplateau.sciencechinalifesciences,53(9),1142.
MLA Ma Weiling,et al."changesinindividualplanttraitsandbiomassallocationinalpinemeadowwithelevationvariationontheqinghaitibetanplateau".sciencechinalifesciences 53.9(2010):1142.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ma Weiling]'s Articles
[Shi Peili]'s Articles
[Li Wenhua]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ma Weiling]'s Articles
[Shi Peili]'s Articles
[Li Wenhua]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ma Weiling]'s Articles
[Shi Peili]'s Articles
[Li Wenhua]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.