Effects of Increased Precipitation and Nitrogen Deposition on Methane Uptake of Alpine Meadow in Qinghai-Tibet Plateau : in situ Experiments

• Autorzy: Guo Xiaowei , Dail Licong , Zhang Fawei , Li Yikang , Lin Li , Li Qian , Dawen Qian , Fan Bo , Ke Xun , Cao Guangmin , Zhou Huakun , Du Yangong

Identyfikatory

DOI

10.3161/15052249PJE2020.68.2.001

• Języki publikacji: EN

Abstrakty

EN

The methane (CH₄) fluxes in grasslands are sensitive to changes in precipitation and soil nitrogen concentrations, which was poorly understood, especially on the Tibetan Plateau. Therefore, an experiment was conducted from May 2012 to October 2013, by using the static chamber technique and gas chromatography method. We set up five treatments: an increased 2 g m^-2 NH₄NO₃ treatment (2gN); an increased 4 g m^-2 NH₄NO₃ treatment (4gN); and treatment with precipitation increased by 20% (Pre), and added 2 g m^-2 NH₄NO₃ and precipitation (20%) treatment (N+Pre), and a control treatment (CK). The five treatments showed decreasing CH₄ uptake rates in the following order: CK (71.66 ± 6.6 µg m^-2 h^-1) > N+Pre (58.57 ± 3.7 µg m^-2 h^-1) > Pre (52.66 ± 2.3 µg m^-2 h^-1) > 2gN (47.63 ± 3.1 µg m^-2 h^-1) > 4gN (39.12 ± 3.3 µg m^-2 h^-1). The 2gN and 4gN treatment resulted in 33.5% and 45.4% lower CH₄ uptake than the CK treatment, respectively. The path analysis indicated that the above-ground biomass and litter fall were the most important factor promoting and limiting the CH₄ uptake rate of alpine meadow, respectively.

Słowa kluczowe

EN

alpine meadows; CH4 uptake; environmental factors; nitrogen deposition; precipitation increase

PL

łąki alpejskie; absorpcja CH4; czynniki środowiskowe; depozycja azotowa; wzrost opadów

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2020
• Tom: Vol. 68, nr 2
• Strony: 109--120
• Opis fizyczny: Bibliogr. 39 poz., rys., tab., wykr.

Twórcy

autor

Guo Xiaowei

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
• Qinghai Provincial Key Laboratory of Restoration Ecology for Cold Regions, Xining, China

autor

Dail Licong

• College of Resource and Environment, University of the Chinese Academy of Sciences, Beijing, China

autor

Zhang Fawei

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China

autor

Li Yikang

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China

autor

Lin Li

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China

autor

Li Qian

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China

autor

Dawen Qian

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China

autor

Fan Bo

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China

autor

Ke Xun

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
• College of Resource and Environment, University of the Chinese Academy of Sciences, Beijing, China

autor

Cao Guangmin

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China

autor

Zhou Huakun

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China

autor

Du Yangong

• Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
• Qinghai Provincial Key Laboratory of Restoration Ecology for Cold Regions, Xining, China

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).