Vertical distribution and interaction of ethylene and methane in temperate volcanic forest soils

Temperature effects on ethylene and methane production from temperate forest soils

“…The results indicate that shortterm anoxic conditions due to heavy rainfall in summer, are most likely to stimulate the production of C 2 H 4 beneath these forest stands. The presence of C 2 H 4 production from forest topsoil (e.g., 0-2.5 cm) has been shown to involve in the localization of the maximal CH 4 consumption activity in subsurface soils under many temperate forests [10] . Hence, it is interesting and necessary to study cycling of C 2 H 4 in forest topsoil and its interaction with the soil atmospheric CH 4 consumption in situ.…”

“…Further studies are needed to confirm that C 2 H 4 production from forest topsoil gave a larger Q 10 value than the soil CH 4 production under oxic conditions. Together the high proportion of heavy rainfall in summer in northeastern China, and the interaction between the C 2 H 4 and CH 4 consumption by forest soils [9][10][11] , the results would promote one to study the temperature effects on C 2 H 4 cycling in temperate forest topsoil and its interaction with the CH 4 fluxes from forest soils in situ.…”

“…Of addition interest were the differences in both responses and the mechanisms involved. Together the interaction between C 2 H 4 and CH 4 consumption by soils [9][10][11] , the results would improve one to study the effects of temperature on C 2 H 4 cycling in forest topsoil and its interaction with CH 4 fluxes from forest soils in situ.…”

“…Excess water (for example, after heavy rainfall) and abundance of nutrients, such as C, N and P stimulating ARTICLES ATMOSPHERIC SCIENCES microbial growth can promote the formation of anoxic conditions in forest soils, with accumulation of C 2 H 4 [1,3,6,7] . Although capacities of transporting CH 4 and oxygen towards the underlying soil are considered main factors affecting soil atmospheric CH 4 oxidation [8] , cycling of such C 2 H 4 in forest topsoil can to some extent affect the net flux of CH 4 in the field [9,10] . The CH 4 consumption activity in temperate forest topsoil is significantly reduced by addition of 2-3 µL L −1 C 2 H 4 in the headspace gases [9,11] , which can be easily produced from forest topsoil under short-term anoxic conditions [1,10] .…”

“…Although capacities of transporting CH 4 and oxygen towards the underlying soil are considered main factors affecting soil atmospheric CH 4 oxidation [8] , cycling of such C 2 H 4 in forest topsoil can to some extent affect the net flux of CH 4 in the field [9,10] . The CH 4 consumption activity in temperate forest topsoil is significantly reduced by addition of 2-3 µL L −1 C 2 H 4 in the headspace gases [9,11] , which can be easily produced from forest topsoil under short-term anoxic conditions [1,10] . The change in temperature and the status of oxygen can affect the activities of soil microorganisms responsible for C 2 H 4 and CH 4 production.…”