44 research outputs found
Low NO and variable CH fluxes from tropical forest soils of the Congo Basin
Globally, tropical forests are assumed to be an important source of atmospheric nitrous oxide (NO) and sink for methane (CH). Yet, although the Congo Basin comprises the second largest tropical forest and is considered the most pristine large basin left on Earth, in situ NO and CH flux measurements are scarce. Here, we provide multi-year data derived from on-ground soil flux (n = 1558) and riverine dissolved gas concentration (n = 332) measurements spanning montane, swamp, and lowland forests. Each forest type core monitoring site was sampled at least for one hydrological year between 2016 - 2020 at a frequency of 7-14 days. We estimate a terrestrial CH uptake (in kg CH-C ha yr) for montane (−4.28) and lowland forests (−3.52) and a massive CH release from swamp forests (non-inundated 2.68; inundated 341). All investigated forest types were a NO source (except for inundated swamp forest) with 0.93, 1.56, 3.5, and −0.19 kg NO-N ha yr for montane, lowland, non-inundated swamp, and inundated swamp forests, respectively
Coalizões Globais Lideradas pelos Estados Unidos na Guerra ao Terror (2001-2011): Para Além do Unilateralismo
Il carcinoma naso-faringeo: Prospettive ed evoluzione clinica in rapporto all\u2019istotipo.
Elementi di anatomia, anatomia chirurgica, elettroanatomia ed istopatologia dell\u2019orecchio interno
Low N2O and variable CH4 fluxes from tropical forest soils of the Congo Basin
Globally, tropical forests are assumed to be an important source of atmospheric nitrous oxide (N2O) and sink for methane (CH4). Yet, although the Congo Basin comprises the second largest tropical forest and is considered the most pristine large basin left on Earth, in situ N2O and CH4 flux measurements are scarce. Here, we provide multi-year data derived from on-ground soil flux (n = 1558) and riverine dissolved gas concentration (n = 332) measurements spanning montane, swamp, and lowland forests. Each forest type core monitoring site was sampled at least for one hydrological year between 2016 - 2020 at a frequency of 7-14 days. We estimate a terrestrial CH4 uptake (in kg CH4-C ha−1 yr−1) for montane (−4.28) and lowland forests (−3.52) and a massive CH4 release from swamp forests (non-inundated 2.68; inundated 341). All investigated forest types were a N2O source (except for inundated swamp forest) with 0.93, 1.56, 3.5, and −0.19 kg N2O-N ha−1 yr−1 for montane, lowland, non-inundated swamp, and inundated swamp forests, respectively