Short-term effects of fire disturbance on CH4 emission from forested wetlands in the Xiaoxing’an Mountains, Northeast China

作     者：Han Gu Wenyu Zheng Dawei Xu Changcheng Mu 

作者机构：College of Architecture and Urban PlanningChongqing Jiaotong UniversityChongqing 40074People’s Republic of China Postdoctoral Program of Landscape ArchitectureNortheast Forestry UniversityHarbin 150040People’s Republic of China School of ForestryNortheast Forestry University Harbin 150040People’s Republic of China 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2019年第30卷第3期

页      面：969-979页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0907[农学-林学] 09[农学] 0829[工学-林业工程] 0903[农学-农业资源与环境] 0901[农学-作物学] 

基　　金：supported by postdoctoral grant of HeiLongJiang(Grant No.LBH-Z17002) 

主　　题：Xiaoxing’an Mountains Forest swamp CH4 emission Fire disturbance 

摘      要：Using static chamber gas chromatography, we determined the seasonal dynamics, controlling factors, and distribution patterns of forest swamp CH4 levels and related environmental factors (temperature, water level) after fire disturbance in the Xiaoxing’an Mountains. The results showed the following: during the growing season, the annual CH4 emission distribution ranged from - 0.001 ± 0.012 to 22.373 ± 3.650 mg m^-2 h^-1;mild fire caused the swamp CH4 emission flux of tussock, shrub, Alnus sibirica and birch swamp to increase by 56.0–524.7%;at low water levels, temperature had a significant influence on the swamp type, and the correlation between the methane emission flux and temperature was significantly strengthened;after a fire disturbance, methane emissions from all types of marsh were highest in summer and second highest in autumn, with a weak absorption in spring;and along the water environment gradient of the transition zone, the CH4 emission flux presented a decreasing trend in its spatial distribution pattern.