| 北亚热带次生栎林和人工松林土壤呼吸日变化 |
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| 引用本文： | 张增信,施政,何容,王国兵,唐燕飞,阮宏华.北亚热带次生栎林和人工松林土壤呼吸日变化[J].南京林业大学学报(自然科学版),2010,34(1):19-23. |
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| 作者姓名： | 张增信 施政 何容 王国兵 唐燕飞 阮宏华 |
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| 作者单位： | 南京林业大学,江苏省林业生态工程重点实验室,江苏,南京,210037 |
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| 基金项目： | 国家自然科学基金项目(30670313);;国家林业局林业公益性行业科研专项(200804006) |
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| 摘 要： | 利用LI-8100土壤碳通量观测仪,测定并分析了北亚热带天然次生栎林和火炬松人工林的土壤呼吸日变化特征。结果发现:松林和栎林土壤呼吸具有明显的日变化特征,基本上呈单峰型分布,呼吸速率最强一般出现在下午,最弱一般出现在凌晨;松林土壤呼吸速率明显比栎林的高,从3月到6月,松林和栎林土壤呼吸速率显著增加,6月达到最高,之后又出现下降;栎林、松林土壤呼吸速率对温度变化比较敏感,地面温度与土壤呼吸速率的关系要好于距地表5 cm处土壤温度与土壤呼吸速率的关系,根据地面温度与土壤呼吸速率的关系,得到栎林的Q10值为2.08,松林的为1.41。
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| 关 键 词： | 土壤呼吸 次生栎林 火炬松人工林 北亚热带 |
Soil respiration of Quercus variabilis Bl.and Pinus taeda L.forestecosystems in northern subtropics areas of China |
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| ZHANG Zeng-xin,SHI Zheng,HE Rong,WANG Guo-bing,TANG Yan-fei,RUAN Hong-hua.Soil respiration of Quercus variabilis Bl.and Pinus taeda L.forestecosystems in northern subtropics areas of China[J].Journal of Nanjing Forestry University(Natural Sciences ),2010,34(1):19-23. |
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| Authors: | ZHANG Zeng-xin SHI Zheng HE Rong WANG Guo-bing TANG Yan-fei RUAN Hong-hua |
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| Institution: | Jiangsu Key Laboratory of Forestry Ecological Engineering, Nanjing Forestry University, Nanjing 210037, China |
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| Abstract: | Evaluation of soil respiration is of major importance in the context of increasing CO_2 concentration in the global carbon cycle.The daily variation in soil respiration was measured by LI-8100 in a secondary oak forest and a pine plantation,respectively,at Xiashu experimental site in Jiangsu province,China.The results showed that there were significant daily variations in the soil respiration for both forests,and daily soil respiration showed a mono-peak trend,with its peak occurring in the period from 12:0... |
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| Keywords: | soil respiration secondary oak forest pine plantation northern subtropic |
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