Characterizing the post-monsoon CO2, CH4, N2O, and H2O vapor fluxes from a tropical wetland in the Himalayan foothill

Raturi, Asha; Singh, Hukum; Kumar, Parmanand; Chanda, Abhra; Shukla, Navneet

doi:10.1007/s10661-021-09721-8

Cited by 5 publications

(1 citation statement)

References 84 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Soil moisture is a critical factor that controls microbial activity in the soil. It is considered the second most important environmental parameter affecting soil respiration and other biochemical processes (Orchard and Cook 1983;Dabrowska-Zielinska et al 2018;Raturi et al 2022). Low and high soil moisture limits the biochemical process, as the former limits microbial activity, whereas the latter reduces the airlled soil porosity, which may limit the diffusion of soil gases (Davidson et al 1998;Kishimoto-Mo 2015).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal patterns and drivers of greenhouse gas fluxes in the sub-tropical wetland ecosystem of Indian Himalayan foothill

Raturi

Singh

Kumar

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Sub-tropic Himalayan wetlands play a critical role in regional greenhouse gas (GHG) fluxes and budgets, consequently influencing climate change. Nevertheless, the magnitude, trends, and drivers regulating GHGs fluxes in the sub-tropic wetlands of the Indian Himalayan foothill remain uncertain. Herein, we characterized temporal and spatial GHGs fluxes (CO2, CH4, and N2O) between December 2020 and November 2021 to identify patterns and regulating drivers in the subtropical wetland of the Indian Himalayan foothill. The wetland was divided into five habitats (M1-sloppy surface at swamp forest; M2-plain surface at swamp forest; M3-swamp surface with small grasses; M4-marshy land with dense macrophytes and M5-marshy land with sparse macrophytes) for in-situ measurement of GHGs fluxes (CO2, CH4, and N2O), microclimate (air and soil temperature, soil moisture), soil properties (pH, EC, N, P, K, and SOC). Across the habitats, CO2, CH4, and N2O fluxes ranged between 125.15 to 536.00 mg m− 2 h− 1, 0.32 to 28.35 mg m− 2 h− 1 and 0.16 to 3.14 mg m− 2 h− 1, respectively. The habitats (M3 and M5) exhibited higher GHGs fluxes (CO2, CH4, and N2O) than counterpart habitats. The highest CO2 fluxes were reported in summer, followed by Spring, Autumn, and Winter. However, higher CH4 and N2O flux in summer, followed by Autumn, Spring, and Winter. The soil temperature and SOC were reported as crucial drivers regulating CO2 fluxes than soil moisture. However, soil temperature and moisture equally regulated CH4 and N2O fluxes across the habitats. N2O fluxes were regulated by soil phosphorus and EC across the habitats. The air temperature was a universal driver controlling all GHGs fluxes across the habitats. We urged that long-term GHG fluxes monitoring and identifying drivers across spatiotemporal scales are required to accurately predict GHGs fluxes and budget to understand the warming potential of GHGs in Indian Himalayan wetlands.

show abstract