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题名: Response of alpine grassland to elevated nitrogen deposition and water supply in China
作者: 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)
关键词: Aboveground biomass ; Species richness ; Forbs ; Availability of nutrient and moisture ; Species productivity
刊名: OECOLOGIA
发表日期: 2015
DOI: 10.1007/s00442-014-3122-4
卷: 177, 期:1, 页:65-72
收录类别: SCI
资助者: Chinese National Basic Research Program;National Natural Science Foundation of China;Distinguished Talent Program of NSFCOne-hundred Talents Program of the Chinese Academy of SciencesInnovative Group Grant
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.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/4214
Appears in Collections:新疆维吾尔自治区植物资源化学重点实验室 _期刊论文

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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

Recommended Citation:
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.
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