Plant communitymediated methane uptake in response to increasing nitrogen addition level in a saline-alkaline grassland by rhizospheric effects

doi:10.1016/j.geoderma.2022.116235

	Plant communitymediated methane uptake in response to increasing nitrogen addition level in a saline-alkaline grassland by rhizospheric effects
	Chen, Xiaopeng 1,2; Diao, Huajie 1,2; Wang, Shiping 3; Li, Haiyan 4; Wang, Zhiping 5; Shen, Yan 1,2; Degen, A. Allan ; Dong, Kuanhu 1,2; Wang, Changhui 1,2,5
	2023
发表期刊	GEODERMA
ISSN	0016-7061
卷号	429
摘要	Methane (CH4) uptake in dryland ecosystems is a pathway in mitigating atmospheric CH4 concentrations. A number of studies have demonstrated that nitrogen availability is a key regulator of the CH4 oxidation process. However, how plants mediate soil CH4 oxidation in response to N addition, particularly in saline-alkaline grasslands in the vast regions of the northern China, has received little attention. We conducted a 3-yr (2017-2019) in-situ experiment with eight N addition levels to examine the effect of N on soil CH4 oxidation, and to explore the linkages between the N-induced changes of plant community and the seasonal dynamics of CH4 in a saline-alkaline grassland. We found that the saline-alkaline grassland was a weak CH4 sink displaying nonlinear CH4 uptake levels in response to N additions, possibly due to the nonlinear changes in the abundance of key functional genes (pmoA) that were responsible for CH4 oxidation. The changes in plant productivity and diversity that were induced by N additions explained 21 % of the variations in CH4 uptake. The N-induced increase in productivity indirectly enhanced CH4 uptake at N addition rates of <10 g m(-2) yr(-1), while the decrease in biodiversity indirectly inhibited CH4 uptake when N addition exceeded 10 g m(-2) yr(-1). The N-induced changes in the plant community can affect CH4 uptake, mainly through the rhizospheric effects of plants. In conclusion, our findings underscore the importance of rhizosphere when assessing the CH4 uptake in saline-alkaline grassland ecosystems.
关键词	Methane uptake Nitrogen addition Plant -microbe interaction pmoA gene Salinization
学科领域	Soil Science
DOI	10.1016/j.geoderma.2022.116235
收录类别	SCI
语种	英语
WOS关键词	IN-SITU MEASUREMENTS ; TIBETAN PLATEAU ; INNER-MONGOLIA ; SOIL ; CARBON ; OXIDATION ; BIOMASS ; FLUX ; COMMUNITIES ; BACTERIA
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000882205000003
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-6259
资助机构	National Natural Science Foundation of China [31800402, 31872406] ; High Level Talents Project of Shanxi Agricultural University [2021XG008] ; Shanxi Key Laboratory Project [202104010910017] ; Science and technology innovation project of colleges and universities in Shanxi Province [2020L0144] ; Key Laboratory of Vegetation Ecology, Ministry of Education ; Science and Technology Innovation Fund of Shanxi Agricultural University [2018YJ34]
作者邮箱	changhui.wang@sxau.edu.cn
作品OA属性	hybrid
引用统计	被引频次：6[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/2S10CLM1/29129
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.Shanxi Agr Univ, Youyu Loess Plateau Grassland Ecosyst Natl Res Stn, Taigu 030801, Peoples R China 3.Shanxi Key Lab Grassland Ecol Protect & Native Gra, Taigu 030801, Peoples R China 4.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China 5.Northeast Normal Univ, Inst Grassland Sci, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Jilin, Peoples R China 6.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 7.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Wyler Dept Dryland Agr, Desert Anim Adaptat & Husb, IL-8410500 Beer Sheva, Israel
推荐引用方式 GB/T 7714	Chen, Xiaopeng,Diao, Huajie,Wang, Shiping,et al. Plant communitymediated methane uptake in response to increasing nitrogen addition level in a saline-alkaline grassland by rhizospheric effects[J]. GEODERMA,2023,429.
APA	Chen, Xiaopeng.,Diao, Huajie.,Wang, Shiping.,Li, Haiyan.,Wang, Zhiping.,...&Wang, Changhui.(2023).Plant communitymediated methane uptake in response to increasing nitrogen addition level in a saline-alkaline grassland by rhizospheric effects.GEODERMA,429.
MLA	Chen, Xiaopeng,et al."Plant communitymediated methane uptake in response to increasing nitrogen addition level in a saline-alkaline grassland by rhizospheric effects".GEODERMA 429(2023).

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