Response of alpine grassland to elevated nitrogen deposition and water supply in China
Li, KH (Li, Kaihui); Liu, XJ (Liu, Xuejun); Song, L (Song, Ling); Gong, YM (Gong, Yanming); Lu, CF (Lu, Chunfang); Yue, P (Yue, Ping); Tian, CY (Tian, Changyan); Zhang, FS (Zhang, Fusuo)
2015
发表期刊OECOLOGIA
ISSN0029-8549
卷号177期号:1页码:65-72
摘要

Species composition and productivity are influenced by water and N availability in semi-arid grasslands. To assess the effects of increased N deposition and water supply on plant species composition and productivity, two field experiments with four N addition treatments, and three N and water combination treatments were conducted in alpine grassland in the mid Tianshan mountains, northwest China. When considering N addition alone, aboveground biomass (AGB) of forbs (F-AGB) responded less to N addition than AGB of grasses (G(AGB)). G(AGB) increased as an effect of N combined with water addition but F-AGB did not show such an effect, reflecting a stronger response of grasses to the interaction of water availability and N than forbs. Under all treatments, N allocation to the aboveground tissue did not change for either forbs or grasses. N deposition and water addition did not alter species richness in the present study. These results suggest that N addition generally promoted AGB but had little effect on species richness in wet years. Snowfall in winter combined with rainfall in the early growing season likely plays a critical role in regulating plant growth of the subsequent year in the alpine grassland.

关键词Aboveground Biomass Species Richness Forbs Availability Of Nutrient And Moisture Species Productivity
DOI10.1007/s00442-014-3122-4
收录类别SCI
WOS记录号WOS:000347406500007
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4214
专题省部共建新疆特有药用资源利用重点实验室
作者单位Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, Urumqi 830011, Peoples R China;China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China;Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Key Lab Chem Plant Resources Arid Reg, Urumqi 830011, Peoples R China
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Li, KH ,Liu, XJ ,Song, L ,et al. Response of alpine grassland to elevated nitrogen deposition and water supply in China[J]. OECOLOGIA,2015,177(1):65-72.
APA Li, KH .,Liu, XJ .,Song, L .,Gong, YM .,Lu, CF .,...&Zhang, FS .(2015).Response of alpine grassland to elevated nitrogen deposition and water supply in China.OECOLOGIA,177(1),65-72.
MLA Li, KH ,et al."Response of alpine grassland to elevated nitrogen deposition and water supply in China".OECOLOGIA 177.1(2015):65-72.
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