| 长白山北坡不同土壤N2O和CH4排放的初步研究 |
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| 引用本文： | 徐慧,陈冠雄,马成新.长白山北坡不同土壤N2O和CH4排放的初步研究[J].生态学杂志,1995,6(4):373-377. |
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| 作者姓名： | 徐慧 陈冠雄 马成新 |
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| 作者单位： | 中国科学院沈阳应用生态研究所陆地生态系统痕量物质生态过程开放实验室, 沈阳 110015 |
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| 基金项目： | 国家“八五”科技攻关项目;中国科学院陆地生态系统痕量物质生态过程开放实验室基金 |
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| 摘 要： | 用箱法技术原位测定了长白山北坡不同土壤(苔原土、生草森林土、棕色针叶林土和暗棕色森林土)6-8月间的N2O和CH4排放。结果表明,这些土壤既是N2O的源,又同时是CH4的汇。N2O通量变化于6.17-12.33μg·m-2·h-3之间(平均9.37μg·m-2·h-1),CH4通量为-85.63—7.58μg·m-2·h-1(平均-41.45μg·m-3·h-1),并观察到在N2O排放和CH4吸收之间有着相互消长关系。实验室培养实验表明,最大反硝化作用活性存在于土壤上层(0-6cm);不同土壤的反硝化作用活性明显不同。山地暗棕色森林土的CH4吸收作用也主要发生在土壤的上层(0-12cm).
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| 关 键 词： | 长白山北坡 N2O CH4 排放 |
| 收稿时间： | 1995-02-28 |
A preliminary study on N2O and CH4 emissions from differentsoils on northern slope of Changbai Mountain |
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| Xu Hui,Chen Guanxiong,Ma Chengxin.A preliminary study on N2O and CH4 emissions from differentsoils on northern slope of Changbai Mountain[J].Chinese Journal of Ecology,1995,6(4):373-377. |
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| Authors: | Xu Hui Chen Guanxiong Ma Chengxin |
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| Institution: | Laboratory of Ecological Prooess of Trace Substance in Terrestrial Ecosystem, Institute of Applied Ecology, Academia Sinica, Shenyang 110015 |
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| Abstract: | The fluxes of N2O and CH4 from tundra soil, soddy forest soil, brown coniferous forest soil and dark brown forest soil on northern slope of Changbai Mountain are measured in situ by chamber technique from June and August, 1994.The results show that all of the soils studied are the source of N2O, and the sink of CH4.The N2O flux is in the range of 6.17 and 12.33 μg·m-2·h-1, while the CH4 flux is between -85.63 and -7.58μg·m-2·h-1.There is a trade-off between N2O emission and CH4 uptake.Laboratory experiments show that upper soil layer (0-6cm) has the highest denitrification activity, which has a significant difference among different soils.The uptake of CH4 by dark brown forest soil mainly occurs in upper soil layer (0-12cm). |
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| Keywords: | Changbai Mountain N2O CH4 Emission |
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