Tropical forest soils serve as substantial and persistent methane sinks.

ABSTRACT: Although tropical forest soils contributed substantially global soil methane uptake, observations on soil methane fluxes in tropical forests are still sparse, especially in Southeast Asia, leading to large uncertainty in the estimation of global soil methane uptake. Here, we conducted two-year (from Sep, 2016 to Sep, 2018) measurements of soil methane fluxes in a lowland tropical forest site in Hainan island, China. At this tropical forest site, soils were substantial methane sink, and average annual soil methane uptake was estimated at 2.00 kg CH₄-C ha^-1 yr^-1. The seasonality of soil methane uptake showed strong methane uptake in the dry season (-1.00 nmol m^-2 s^-1) and almost neutral or weak soil methane uptake in the wet season (-0.2

SUBMITTER: Zhao JF 

PROVIDER: S-EPMC6856371 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature