The response of soil respiration to different N compounds addition in a saline-alkaline grassland of northern China

doi:10.1093/jpe/rtac006

	The response of soil respiration to different N compounds addition in a saline-alkaline grassland of northern China
	Diao, Huajie 1,2,3; Chen, Xiaopeng 2,3; Wang, Ge 2,3; Ning, Qiushi 1; Hu, Shuya 1; Sun, Wei 4; Dong, Kuanhu 2,3; Wang, Changhui 1,2,3
	2022
发表期刊	JOURNAL OF PLANT ECOLOGY
ISSN	1752-9921
卷号	15 期号:5 页码:897-910
摘要	The increase in atmospheric nitrogen (N) deposition has profound effects on soil respiration (SR). However, the responses of SR to the addition of different N compounds, particularly in saline-alkaline grasslands remain unclear. A 3-year controlled field experiment was conducted to investigate the responses of SR to different N compounds (NH4NO3, (NH4)(2)SO4 and NH4HCO3) during the growing seasons in a saline-alkaline grassland located in the agro-pastoral ecotone of northern China. Our results demonstrated that SR showed a bimodal pattern and a significant interannual difference that was regulated by air or soil temperature and precipitation. Nitrogen addition had a significant effect on SR, and the effect of N addition on SR varied yearly, which was related to seasonal precipitation. The mean SR across 3 years (2017-2019) was increased by 19.9%, 13.0% and 16.6% with the addition of NH4NO3, (NH4)(2)SO4 and NH4HCO3, respectively. The highest effect of NH4NO3 addition on SR across 3 years was ascribed to the highest aboveground net primary production, belowground net primary production (BNPP) and soil NO3- concentrations. SR (C loss) was significantly increased while plant productivity (C input) did not significantly change under NH4HCO3 addition, indicating a decrease in C sequestration. In addition, BNPP was the main direct factor influencing SR in this saline-alkaline grassland, and soil salinization (e.g. soil base cations and pH) indirectly affected SR through soil microorganisms. Notably, NH4NO3 addition overestimated the response of SR to N addition, and different N compounds should be considered, especially in saline-alkaline grassland.
关键词	nitrogen compounds soil respiration soil microorganism plant biomass saline-alkaline grassland
学科领域	Plant Sciences ; Ecology ; Forestry
DOI	10.1093/jpe/rtac006
收录类别	SCI
语种	英语
WOS关键词	NITROGEN ADDITION ; MICROBIAL RESPIRATION ; ORGANIC-CARBON ; TERRESTRIAL ECOSYSTEMS ; TEMPERATE GRASSLAND ; DEPOSITION ; COMPONENTS ; FERTILIZATION ; PRODUCTIVITY ; COMMUNITIES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000852303100003
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
EISSN	1752-993X
资助机构	Chinese National Key Research and Development Program for Basic Research [2017YFA0604802] ; National Natural Science Foundation of China [31770526, 31872406, 31800402] ; Research projects of Shanxi Province's doctoral graduates and postdoctoral researchers working in Shanxi Province [SXBYKY2021052]
作者邮箱	dongkuanhu@sxau.edu.cn ; wangch@ibcas.ac.cn
作品OA属性	hybrid
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28687
专题	植被与环境变化国家重点实验室
作者单位	1.Shanxi Agr Univ, Coll Grassland Sci, Taigu 030801, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Shanxi Agr Univ, Shanxi Key Lab Grassland Ecol Protect & Nat Grass, Taigu 030801, Peoples R China 4.Shanxi Agr Univ, Youyu Loess Plateau Grassland Ecosyst Res Stn, Taigu 030801, Peoples R China 5.Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Peoples R China
推荐引用方式 GB/T 7714	Diao, Huajie,Chen, Xiaopeng,Wang, Ge,et al. The response of soil respiration to different N compounds addition in a saline-alkaline grassland of northern China[J]. JOURNAL OF PLANT ECOLOGY,2022,15(5):897-910.
APA	Diao, Huajie.,Chen, Xiaopeng.,Wang, Ge.,Ning, Qiushi.,Hu, Shuya.,...&Wang, Changhui.(2022).The response of soil respiration to different N compounds addition in a saline-alkaline grassland of northern China.JOURNAL OF PLANT ECOLOGY,15(5),897-910.
MLA	Diao, Huajie,et al."The response of soil respiration to different N compounds addition in a saline-alkaline grassland of northern China".JOURNAL OF PLANT ECOLOGY 15.5(2022):897-910.

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