Soil C : N : P Stoichiometry as Related to Nitrogen Addition in a Meadow Steppe of Northern China

doi:10.1134/S1064229321100124

	Soil C : N : P Stoichiometry as Related to Nitrogen Addition in a Meadow Steppe of Northern China
	Wang, X. G.; Wuyunna ; Lu, X. T.; Yang, G. J.; Coombs, C. E. O.; Du, X.; Song, Y. T.; Zhang, F. J.; Huo, G. W.; Han, X. G.
	2021
发表期刊	EURASIAN SOIL SCIENCE
ISSN	1064-2293
卷号	54 期号:10 页码:1581-1587
摘要	The concentrations and stoichiometry of soil carbon (C), nitrogen (N), and phosphorus (P) have critical implications for nutrient cycling and ecosystem function. While their high sensitivity to atmospheric N deposition is well known, it remains unclear for the soil depth-dependence of such responses to N deposition. Here, we examined the responses of soil C : N : P stoichiometry at three soil depths in the upper humus horizon (0-5, 5-10, and 10-20 cm) of Haplic Chernozem (Loamic) across a gradient of urea addition rates (0, 2, 10, 20, and 50 g N m(-2) year(-1)) after five years treatments in a hay-harvest meadow steppe of northern China. We found that the effects of increasing N addition rates on the concentrations and stoichiometry of soil C, N and P did not depend on soil depth, though those parameters varied greatly across different soil layers. Across all soil depths, the concentrations of soil C and N increased with increasing N addition rates, but soil P concentration was not affected by N addition. The higher sensitivity of soil N than soil C to N enrichment resulted in decreasing soil C : N ratio across the N addition gradient, especially for the surface soil layer. Soil N : P ratio showed a positive response to the increases of N addition rates. The unbalanced responses of soil C, N, and P concentrations to N enrichment, as indicated by the decreases of soil C : N ratio and the increases of soil N : P ratio across the N addition gradient, highlighted the role of N enrichment in decoupling soil nutrient cycling in the temperate steppe.
关键词	biogeochemistry C N P ratio global change nitrogen enrichment soil layer
学科领域	Soil Science
DOI	10.1134/S1064229321100124
收录类别	SCI
语种	英语
WOS关键词	CNP STOICHIOMETRY ; ALPINE GRASSLAND ; CARBON STORAGE ; PHOSPHORUS ; DEPOSITION ; NUTRIENTS ; CYCLES ; ECOSYSTEMS ; LIMITATION ; RESPONSES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000690707000001
出版者	PLEIADES PUBLISHING INC
文献子类	Article
出版地	NEW YORK
EISSN	1556-195X
资助机构	National Natural Science Foundation of China [31670455, 31971750, 31600363, 31770502, 31700391] ; Natural Science Foundation of Liaoning Province [2020-MZLH-20] ; Fundamental Research Funds for the Central Universities (Program for ecology research group) ; National Scholarship for Overseas Studying from China Scholarship Council (CSC) [201808210005] ; K.C.Wong Education Foundation [GJTD-2019-10]
作者邮箱	wuyunna@dlnu.edu.cn
引用统计
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/26352
专题	植被与环境变化国家重点实验室
作者单位	1.[Wang, X. G. 2.Wuyunna 3.Du, X. 4.Song, Y. T. 5.Zhang, F. J. 6.Huo, G. W.] Dalian Minzu Univ, Coll Environm & Resources, Dalian 116600, Peoples R China 7.[Lu, X. T. 8.Yang, G. J. 9.Han, X. G.] Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110016, Peoples R China 10.[Coombs, C. E. O.] Univ Sydney, Ctr Carbon Water & Food, Sch Life & Environm Sci, Camden, NSW 2570, Australia 11.[Han, X. G.] Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Wang, X. G.,Wuyunna,Lu, X. T.,et al. Soil C : N : P Stoichiometry as Related to Nitrogen Addition in a Meadow Steppe of Northern China[J]. EURASIAN SOIL SCIENCE,2021,54(10):1581-1587.
APA	Wang, X. G..,Wuyunna.,Lu, X. T..,Yang, G. J..,Coombs, C. E. O..,...&Han, X. G..(2021).Soil C : N : P Stoichiometry as Related to Nitrogen Addition in a Meadow Steppe of Northern China.EURASIAN SOIL SCIENCE,54(10),1581-1587.
MLA	Wang, X. G.,et al."Soil C : N : P Stoichiometry as Related to Nitrogen Addition in a Meadow Steppe of Northern China".EURASIAN SOIL SCIENCE 54.10(2021):1581-1587.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Wang-2021-Soil C _ N（795KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文