文献类型：期刊文献

英文题名：Methane and nitrous oxide production and their driving factors in Phragmites riparian wetlands of Dianchi Lake, China

作者：Li, Wei[1,2] Yuan, Lingchen[3] Lan, Xianli[3] Cui, Jingyi[2] Chen, Yue[4] Chen, Huai[5] Hu, Bin[2] Feng, Defeng[6]

第一作者：Li, Wei

机构：[1] Yunnan Key Laboratory of Plateau Wetland Conservation, Restoration and Ecological Services, Kunming, 650224, China; [2] Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments & School of Ecology and Environmental Science, Yunnan University, Kunming, 650091, China; [3] Institute of International Rivers and Eco-Security, Yunnan University, Kunming, 650091, China; [4] Environmental Protection Research Institute of Guanxi Transportation Science and Technology Group Co.Ltd., Nanning, 530000, China; [5] Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China; [6] Institute of Highland Forest Science, Chinese Academy of Forestry, Kunming, 650224, China

年份：2022

卷号：145

外文期刊名：Ecological Indicators

收录：EI(收录号：20224713150840);Scopus(收录号：2-s2.0-85142195396)

语种：英文

外文关键词：Bacteria - Denitrification - Emission control - Eutrophication - Genes - Lakes - Methane - Nitrogen oxides - Nitrogen removal - Polymerase chain reaction - Soils - Wetlands

摘要：The eutrophic lake Dianchi, china, is a hotspot for methane (CH4) and nitrous oxide (N2O) emissions. However, the potential factors driving CH4 and N2O production in the riparian wetlands of Dianchi Lake remain unclear. In the current study, the potential CH4 and N2O production was evaluated using incubation experiments. The abundance and community structure of the methanogenic communities and denitrifying bacteria were measured using quantitative polymerase chain reaction and Illumina MiSeq sequencing. The results indicated that the potential CH4 and N2O production differed significantly among the riparian wetlands of Dianchi Lake, with rates of 0.26–17.65 μg/g.d and 0.09–1.30 ng/g.h, respectively. The soil mcrA, nirS and nosZ gene copies differed significantly among the riparian wetlands, whereas the soil narG and nirk genes did not. Soil methanogenic archaea in the riparian wetlands were dominated by the order Bathyarchaeia (2.36–45.97 %). Forty-one potential denitrifying bacterial genera were detected in soils from the riparian wetlands, among which the majority belonged to the Proteobacteria (31 genera; 1.54–37.78 %). The variation in CH4 production was mediated through soil AP, water NO3?-N and soil mcrA abundance, while water NH4+-N, soil TN and soil NH4+-N were the main factors regulating N2O production in the riparian wetlands of Dianchi Lake. Our study highlighted the important implication of pollution abatement to greenhouse gas emission reduction in the riparian wetland. ? 2022