Increasing temperature reduces the coupling between available nitrogen and phosphorus in soils of Chinese grasslands

doi:10.1038/srep43524

NWIPB OpenIR

	Increasing temperature reduces the coupling between available nitrogen and phosphorus in soils of Chinese grasslands
	Geng, Yan 1,2,6; Baumann, Frank 3; Song, Chao 4; Zhang, Mi 5; Shi, Yue 1,2; Kuhn, Peter 5; Scholten, Thomas 3; He, Jin-Sheng 1,2,5
	2017-03-07
发表期刊	SCIENTIFIC REPORTS
卷号	7
文章类型	Article
摘要	Changes in climatic conditions along geographical gradients greatly affect soil nutrient cycling processes. Yet how climate regimes such as changes in temperature influence soil nitrogen (N) and phosphorus (P) concentrations and their stoichiometry is not well understood. This study investigated the spatial pattern and variability of soil N and P availability as well as their coupling relationships at two soil layers (0-10 and 10-20 cm) along a 4000-km climate transect in two grassland biomes of China, the Inner Mongolian temperate grasslands and the Tibetan alpine grasslands. Our results found that in both grasslands, from cold to warm sites the amounts of soil total N, total P and available P all decreased. By contrast, the amount of available N was positively related to mean annual temperature in the Tibetan grasslands. Meanwhile, with increasing temperature ratio of available N to P significantly increased but the linear relationship between them was considerably reduced. Thus, increasing temperature may not only induce a stoichiometric shift but also loose the coupling between available N and P. This N- P decoupling under warmer conditions was more evident in the Tibetan alpine grasslands where P limitation might become more widespread relative to N as temperatures continue to rise.
WOS标题词	Science & Technology
DOI	10.1038/srep43524
关键词[WOS]	N-P RATIOS ; TIBETAN PLATEAU ; TERRESTRIAL ECOSYSTEMS ; SEMIARID GRASSLAND ; ORGANIC-MATTER ; CLIMATE-CHANGE ; LEAF-N ; PLANT ; STOICHIOMETRY ; CARBON
收录类别	SCI
语种	英语
项目资助者	Natural Science Foundation of China(31630009 ; National Basic Research Program of China(2014CB954004) ; 31570394)
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000395638100001
引用统计	被引频次：46[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/6792
专题	中国科学院西北高原生物研究所
作者单位	1.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, 5 Yiheyuan Rd, Beijing 100871, Peoples R China 2.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, 5 Yiheyuan Rd, Beijing 100871, Peoples R China 3.Univ Tubingen, Dept Geosci Soil Sci & Geomorphol, Ruemelinstr 19-23, D-72070 Tubingen, Germany 4.Univ Georgia, Odum Sch Ecol, 140 E Green St, Athens, GA 30602 USA 5.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China 6.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, 12 Zhongguancun South St, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Geng, Yan,Baumann, Frank,Song, Chao,et al. Increasing temperature reduces the coupling between available nitrogen and phosphorus in soils of Chinese grasslands[J]. SCIENTIFIC REPORTS,2017,7.
APA	Geng, Yan.,Baumann, Frank.,Song, Chao.,Zhang, Mi.,Shi, Yue.,...&He, Jin-Sheng.(2017).Increasing temperature reduces the coupling between available nitrogen and phosphorus in soils of Chinese grasslands.SCIENTIFIC REPORTS,7.
MLA	Geng, Yan,et al."Increasing temperature reduces the coupling between available nitrogen and phosphorus in soils of Chinese grasslands".SCIENTIFIC REPORTS 7(2017).