Temperature effects on ethylene and methane production from temperate forest soils

作     者：XU XingKai INUBUSHI Kazuyuki 

作者机构：State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric Physics Chi- nese Academy of Sciences Beijing 100029 China Graduate School of Horticulture C~hiba University Matsudo Chiba 271-8510 Japan 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2009年第54卷第8期

页      面：1426-1433页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 0713[理学-生态学] 

基　　金：Supported jointly by National Natural Science Foundation of China (Grant Nos.20777071 and 20477044) Hundred Talents Project from the Chinese Academy of Sciences the Japan Society for the Promotion of Sciences 

主　　题：土壤微生物活性 甲烷产量 土壤温度 温带森林 乙烯 好氧条件 二氧化碳气体 缺氧条件 

摘      要：Change in temperature affects the activity of soil ***,there is limited knowledge about temperature effects on ethylene(C2H4) and methane(CH4) production from forest *** samples(0―5 cm) collected from different temperate forest stands(e.g.,Pinus sylvestris L.,Cryptomeria japonica,and Quercus serrata) were used to compare C2H4 and CH4 production from soils at temperature from 5 to 35℃ under oxic and anoxic *** rates of C2H4 and CH4 production from soils under oxic conditions were measured by using inhibition of acetylene(C2H2) and carbon monoxide(CO).The consumption of C2H2 by soils at an initial concentration of c.250 Pa C2H2 was negligible at 5 and 15℃,but it was significantly increased at 25 and 35℃.The presence of 2 kPa CO in the headspace gases tended to decrease the consumption of C2H2 by soils at high *** Q10 values for the soil C2H2 consumption ranged from 2.3 to 3.8,and there were no significant differences in Q10 values between these topsoil *** rate of CH4 production from each sample under oxic conditions was larger than the soil C2H4 production at 5―35℃,particularly at low temperature,and presented a smaller Q10 *** production from soil after 1 week of anoxic incubation at 5―35℃ was larger than the soil CH4 production,and presented a larger Q10 ***,CH4 produc-tion from Quercus serrata forest soil and its response to temperature increased significantly with in-cubation ***-term anoxic conditions of in situ upland forest soils are normally not prevalent,so it can be reasonably concluded that there is a larger C2H4 production rather than CH4 production under temperate forest stands due to heavy rainfall in summer.