| 火干扰对小兴安岭落叶松-苔草沼泽温室气体排放的影响 |
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| 引用本文： | 于丽丽,牟长城,顾韩,张博文.火干扰对小兴安岭落叶松-苔草沼泽温室气体排放的影响[J].生态学报,2011,31(18):5180-5191. |
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| 作者姓名： | 于丽丽 牟长城 顾韩 张博文 |
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| 作者单位： | 东北林业大学林学院,哈尔滨,150040 |
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| 基金项目： | 国家自然科学基金资助项目(30670349) |
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| 摘 要： | 利用静态箱-气相色谱法,研究火烧干扰(轻度、重度)对小兴安岭落叶松-苔草沼泽生长季CO2、CH4、N2O排放的影响.结果表明:火烧干扰使CO2排放通量提高24.0%-45.9%, CH4提高135.1%(轻度)或下降31.3%(重度),N2O由吸收转化为排放.重度火烧改变了CO2的季节排放规律,火干扰改变了CH4与N2O的季节排放规律.火烧与未火烧样地CO2排放与水位呈显著负相关,与空气温度、土壤温度呈显著正相关;未火烧样地CH4排放与水位呈显著负相关,与地表温度呈显著正相关,轻度火烧样地CH4排放与气温和个别土壤温度呈显著正相关,而重度火烧样地CH4排放、各样地的N2O排放与水位和温度相关性均不显著.火干扰使CO2排放源强度较未火烧提高,轻度火烧样地CH4排放源强度较未火烧提高、重度样地则下降;N2O则由吸收汇转化为排放源.火烧样地温室效应贡献潜力较未火烧样地提高了1/4-1/2,且呈现出随火干扰强度增大而递增的变化规律\.
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| 关 键 词： | 小兴安岭 落叶松-苔草沼泽 温室气体排放 火烧干扰 |
| 收稿时间： | 2010/10/22 0:00:00 |
| 修稿时间： | 4/7/2011 12:00:00 AM |
Effects of fire disturbance on greanhouse gas emission from Larix gmelinii-Carex schmidtii forested wetlands in XiaoXing'an Mountains, Northeast China |
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| YU Lili,MU Changcheng,GU Han and ZHANG Bowen.Effects of fire disturbance on greanhouse gas emission from Larix gmelinii-Carex schmidtii forested wetlands in XiaoXing'an Mountains, Northeast China[J].Acta Ecologica Sinica,2011,31(18):5180-5191. |
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| Authors: | YU Lili MU Changcheng GU Han and ZHANG Bowen |
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| Institution: | College of Forestry, Northeast Forestry University, Harbin 150040, China;College of Forestry, Northeast Forestry University, Harbin 150040, China;College of Forestry, Northeast Forestry University, Harbin 150040, China;College of Forestry, Northeast Forestry University, Harbin 150040, China |
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| Abstract: | |
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| Keywords: | XiaoXing'an Mountains Larixgmelinii-Carexschmidtiis wamp greenhouse gas emission fire disturbance |
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