Methane emissions and production potentials of forest swamp wetlands in the Eastern Great Xing'an Mountains, Northeast China.

摘要: Measurements of methane flux at a few inundated sites in China have been extrapolated to obtain estimates on national scale. To enable those be refined and compare from geographically separated comprising the same wetland types, we used closed chamber method measure uninundated Betula platyphylla—and Larix gmelinii—dominated peatlands Northeast China. Our measurements were taken both vegetated bare soil surfaces, compared with environmental measures including vegetation biomass, temperature characteristics. We found that was low, there no significant differences between indicating influences dominant. positively correlated surface layers soil, above-ground biomass shrub herb layers, total carbon nitrogen; suggest emissions may due anaerobic microcosms layers. The production potentials soils low similar but inconsistent fluxes, fluxes reported types elsewhere, subtle wetlands classed as being type. Differences chambers insignificant, emission through aerenchyma occurred our sites. concluded type not an accurate predictor flux.