| Effects of tree species and soil depths on ethylene and methane consumption in tropical and temperate forest soils |
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| 作者姓名： | Xingkai XU Bin YUAN Jin WEI Yuesi WANG Yao HANG |
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| 作者单位： | State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Institute of Atmospheric Physics,Chinese Academy of Sciences, Beijing 100029, China |
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| 摘 要： | To date our knowledge is limited with regard to the responses of ethylene and methane consumption by forest soils to tree species and soil types, and to the effect of presence of ethylene on atmospheric methane consumption. The soils at depths from tropical and temperate forests in China were used to study the responses of ethylene and methane consumption to tree species and soil types. The ethylene and methane consumption by soils beneath each forest floor was measured under the same oxic conditions, along with main properties of forest soils. The accumulation of ethylene was studied in the soil slurry （soil/water, 1/2.5）. In temperate soils under spruce and birch forests, maximal consumption rates of ethylene and methane were observed in the 2.5-5.0 cm and 5.0-7.5 cm soil layers, respectively （P〈0.05）. However, a maximal consumption of both occurred in the 0-2.5 cm soil layer under temperate Korean pine forest （P〈0.05）. Contrary to temperate forest soils, there was a significant lower consumption of ethylene and methane in tropical forest soils at less than 20 cm depths under a seasonal rainforest and secondary rubber forest （P〈0.05）. Hence, the potential of ethylene and methane consumption in the 0-20 cm soil profile was variable with tree species and soil types. According to ethylene formation in the soil slurry, there was greater accumulation of ethylene in the 0-2.5 cm soil under temperate forests than under tropical forests, and its accumulation under spruce and birch forests was more than under Korean pine forest （P〈0.05）. The presence of extrinsic ethylene can significantly inhibit the consumption of atmospheric methane by forest soils.
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| 关 键 词： | 甲烷 乙烯 森林土壤 植被 |
Effects of tree species and soil depths on ethylene and methane consumption in tropical and temperate forest soils |
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| Xingkai XU Bin YUAN Jin WEI Yuesi WANG Yao HANG.Effects of tree species and soil depths on ethylene and methane consumption in tropical and temperate forest soils[J].Chinese Journal of Geochemistry,2006,25(B08):179-179. |
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| Abstract: | |
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| Keywords: | methane ethylene forest soil vegetation soil depth |
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