长白山三种主要林地土壤甲烷通量

生态学杂志

长白山三种主要林地土壤甲烷通量

耿世聪^1,2,陈志杰^1,2,张军辉^1**,娄鑫^1,2,王秀秀³,戴冠华³,韩士杰¹,于丹丹^1,2

（¹森林与土壤生态国家重点实验室, 中国科学院沈阳应用生态研究所, 沈阳 110016; ^2中国科学院大学, 北京 100049； ³长白山森林生态系统定位研究站，吉林安图 133613）

出版日期:2013-05-10 发布日期:2013-05-10

Soil methane fluxes of three forest types in Changbai Mountain of Northeast China.

GENG Shi-cong^1,2, CHEN Zhi-jie^1,2, ZHANG Jun-hui^{1 **}, LOU Xin^1,2, WANG Xiu-xiu³, DAI Guan-hua³, HAN Shi-jie¹, YU Dan-dan^1,2

(¹State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; ² University of Chinese Academy of Sciences, Beijing 100049, China; ³Changbai Mountains Forest Ecosystem Research Station, Antu 133613, Jilin, China)

Online:2013-05-10 Published:2013-05-10

摘要/Abstract

摘要：

森林土壤甲烷（CH₄）通量及主要影响因素的研究对于降低全球温室气体收支评估的不确定性具有重要价值。本研究通过室内培养实验，分析了土壤湿度、温度和氮添加对长白山3种主要林型（白桦林、山杨林和阔叶红松林）土壤甲烷通量的影响。结果表明：3种林型土壤均为甲烷汇，15 d平均吸收速率分别为2.27 μg·kg^-1·h^-1（山杨林）、1.54 μg·kg^-1·h^-1（阔叶红松林）和1.46 μg·kg^-1·h^-1（白桦林）。重复测量多元方差分析结果显示：林型、温度、土壤湿度及氮素处理对甲烷通量均有极显著影响（P<0.01），林型与其他因子交互作用显著；3种林型土壤甲烷吸收的最佳含水量为45%～60%；在10～20 ℃条件下，甲烷吸收速率随温度增加而增加；氮对甲烷吸收有明显抑制作用。

关键词: 砧木, 赤霞珠, 品质, 生长, 产量

Abstract: To study forest soil methane flux and its main affecting factors is of significance to reduce the uncertainty of the evaluation of global greenhouse gases budget. In this paper, a laboratory incubation experiment was conducted to study the effects of soil moisture, temperature, and nitrogen addition on the methane fluxes from the soils sampled from three typical forest types, i.e., birch forest, poplar forest, and broadleaved Korean pine forest, in Changbai Mountain. The results showed that the three forest soils were all the methane sink, and the average absorption rates of methane in 15 days were 2.27 μg·kg^-1·h^-1 (poplar forest), 1.54 μg·kg^-1·h^-1 (broad-leaved Korean pine forest), and 1.46 μg·kg^-1·h^-1 (birch forest), respectively. The multivariate analysis of variance (MANOVA) of repeated measurements showed that forest type, soil temperature, soil moisture, and nitrogen addition had significant effects (P <0.01) on the soil methane fluxes, and the interactive effects of forest type with other factors were significant. The optimum soil moisture content for soil methane absorption in three forests was 45%-60%. Under the condition of 10-20 ℃, the methane absorption rate increased with increasing temperature. Nitrogen addition had significant inhibition effect on soil methane absorption.

Key words: rootstock, Cabernet Sauvignon, berry quality, growth, yield.

耿世聪1,2,陈志杰1,2,张军辉1**,娄鑫1,2,王秀秀3,戴冠华3,韩士杰1,于丹丹1,2. 长白山三种主要林地土壤甲烷通量[J]. 生态学杂志.

GENG Shi-cong1,2, CHEN Zhi-jie1,2, ZHANG Jun-hui1 **, LOU Xin1,2, WANG Xiu-xiu3, DAI Guan-hua3, HAN Shi-jie1, YU Dan-dan1,2. Soil methane fluxes of three forest types in Changbai Mountain of Northeast China.[J]. cje.

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