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Exacerbated nitrogen limitation ends transient stimulation of grassland productivity by increased precipitation

文献类型：期刊论文

作者Ren, Haiyan2; Xu, Zhuwen; Isbell, Forest1; Huang, Jianhui5; Han, Xingguo5; Wan, Shiqiang4; Chen, Shiping5; Wang, Ruzhen; Zeng, De-Hui; Jiang, Yong
刊名ECOLOGICAL MONOGRAPHS
出版日期2017
卷号87期号:3页码:457-469
关键词increased precipitation nitrogen deposition nitrogen losses nitrogen stable isotopes plant productivity plant species abundance
ISSN号0012-9615
DOI10.5735/085.054.0309
文献子类Article
英文摘要Given that plant growth is often water-limited in grasslands, it has been proposed that projected increases in precipitation could increase plant productivity and carbon sequestration. However, the existing evidence for this hypothesis comes primarily from observational studies along natural precipitation gradients or from short-term manipulative experiments. It remains unclear whether long-term increased precipitation persistently stimulates grassland productivity. In the world's largest remaining temperate grassland, we found that experimentally increased precipitation enhanced net primary production, soil-available nitrogen and foliar nitrogen concentrations during the first six years, but it ceased to do so in the following four years, unless nitrogen was simultaneously added with water. The N-15 enrichment of plant and soil nitrogen pools in later years indicates increased nitrogen losses, which exacerbated nitrogen limitation and ended the stimulation of productivity by increased precipitation. Changes in species abundance might have contributed little to the changes in water treatment effects. Our study demonstrates that the long-term response of grassland ecosystems to increased precipitation will be mediated by nitrogen availability. Our results also point to a shift from co-limitation by water and nitrogen early to perhaps limitation by nitrogen only later in this temperate grassland, highlighting significant variations in the type of resource limitation induced by climate change.
学科主题Plant Sciences
出版地HOBOKEN
电子版国际标准刊号1557-7015
WOS关键词NET PRIMARY PRODUCTIVITY ; CARBON SEQUESTRATION ; TEMPERATE GRASSLAND ; TERRESTRIAL ECOSYSTEMS ; WATER ADDITION ; RESPONSES ; CLIMATE ; PULSES ; DYNAMICS ; METAANALYSIS
语种英语
WOS记录号WOS:000402048600009
出版者WILEY
资助机构National Key Research and Development Program of China [2016YFA0600800, 2016YFC0500707] ; Chinese Academy of SciencesChinese Academy of Sciences [XDB15020200] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31300387, 31370009, 31422009, 41073056] ; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2012M510847]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/22169]  
专题植被与环境变化国家重点实验室
作者单位1.Inner Mongolia Agr Univ, Coll Grassland Resources & Environm, Key Lab Grassland Resources, Minist Educ, Hohhot 010018, Peoples R China
2.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang 110164, Liaoning, Peoples R China
3.Henan Univ, Coll Life Sci, Key Lab Plant Stress Biol, Kaifeng 475004, Henan, Peoples R China
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
5.Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA
推荐引用方式
GB/T 7714		 Ren, Haiyan,Xu, Zhuwen,Isbell, Forest,et al. Exacerbated nitrogen limitation ends transient stimulation of grassland productivity by increased precipitation[J]. ECOLOGICAL MONOGRAPHS,2017,87(3):457-469.
APA Ren, Haiyan.,Xu, Zhuwen.,Isbell, Forest.,Huang, Jianhui.,Han, Xingguo.,...&Fang, Yunting.(2017).Exacerbated nitrogen limitation ends transient stimulation of grassland productivity by increased precipitation.ECOLOGICAL MONOGRAPHS,87(3),457-469.
MLA Ren, Haiyan,et al."Exacerbated nitrogen limitation ends transient stimulation of grassland productivity by increased precipitation".ECOLOGICAL MONOGRAPHS 87.3(2017):457-469.

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来源：植物研究所

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