气候变化领域集成服务门户(CCPortal): Warming and drought increase but wetness reduces the net sink of CH4 in alpine meadow on the Tibetan Plateau

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DOI	10.1016/j.apsoil.2021.104061
	Warming and drought increase but wetness reduces the net sink of CH4 in alpine meadow on the Tibetan Plateau
	Zhang, Zhenhua; Wang, Guangshuai; Wang, Hao; Qi, Qi; Yang, Yunfeng; He, Jin-Sheng
通讯作者	Zhang, ZH (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China. ; Zhang, ZH (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Area, 23 Xinning Rd, Xining 810008, Peoples R China. ; He, JS (通讯作者)，Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Dept Ecol, Yi Fu Bldg 2,5 Yiheyuan Rd, Beijing 100871, Peoples R China.
发表日期	2021
ISSN	0929-1393
EISSN	1873-0272
卷号	167
英文摘要	Alpine meadows are significant CH4 sink. However, the response of soil CH4 uptake to future climate change in the alpine meadows remains poorly understood. We carried out an alpine meadow field experiments to determine how warming and altered precipitation (drought and wetness) affect CH(4 )uptake, as well as its underlying mechanisms. Our results showed that this mesic alpine meadow was a CH4 sink under all treatments (ranging from -311.4 to -487.1 mg m- 2 CH4). Warming significantly increased CH4 uptake by an average of 18.14% of the annual cumulative CH4 uptake and by 48.68% of the non-growing season cumulative CH4 uptake. Drought enhanced the positive warming effect on CH4 uptake by decreasing soil water content, but wetness weakened this effect. Moreover, using high-throughput sequencing and GeoChip approaches, we found that warming stimulated CH4 uptake not only by increasing CH4 oxidation but also by decreasing CH4 production through changing the methanotroph community compositional structure. Further analysis revealed that the dynamics of daily CH4 uptake were mainly regulated by soil water content during the growing season, whereas daily CH4 uptake was strongly correlated with soil temperature during the non-growing season. Warming and altered precipitation influence soil CH4 uptake in different ways during the growing and non-growing seasons. Based on our results, we predict that Tibetan Plateau mesic alpine meadows will remain a net sink of CH(4 )under future climate warming and drought scenarios, but soil CH4 uptake will decrease if precipitation increases in future.
关键词	ABOVEGROUND PLANT BIOMASS METHANE UPTAKE GRASSLANDS OXIDATION FLUXES N2O CONSUMPTION RESPONSES
英文关键词	Climate change; Soil water content; Soil temperature; Methane uptake; Non-growing season; Alpine meadow
语种	英语
WOS研究方向	Agriculture
WOS类目	Soil Science
WOS记录号	WOS:000691498900006
来源期刊	APPLIED SOIL ECOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254283
作者单位	[Zhang, Zhenhua] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China; [Zhang, Zhenhua] Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Area, 23 Xinning Rd, Xining 810008, Peoples R China; [He, Jin-Sheng] Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Dept Ecol, Yi Fu Bldg 2,5 Yiheyuan Rd, Beijing 100871, Peoples R China; [Wang, Guangshuai] Chinese Acad Agr Sci, Farmland Irrigat Res Inst, Minist Agr, Key Lab Crop Water Use & Regulat, Xinxiang 453003, Henan, Peoples R China; [Qi, Qi; Yang, Yunfeng] Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China; [Wang, Hao; He, Jin-Sheng] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730020, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhenhua,Wang, Guangshuai,Wang, Hao,et al. Warming and drought increase but wetness reduces the net sink of CH4 in alpine meadow on the Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,167.
APA	Zhang, Zhenhua,Wang, Guangshuai,Wang, Hao,Qi, Qi,Yang, Yunfeng,&He, Jin-Sheng.(2021).Warming and drought increase but wetness reduces the net sink of CH4 in alpine meadow on the Tibetan Plateau.APPLIED SOIL ECOLOGY,167.
MLA	Zhang, Zhenhua,et al."Warming and drought increase but wetness reduces the net sink of CH4 in alpine meadow on the Tibetan Plateau".APPLIED SOIL ECOLOGY 167(2021).