| 城市绿地土壤呼吸与土壤温度土壤水分的关系研究 |
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| 引用本文： | 严俊霞,汤亿,李洪建.城市绿地土壤呼吸与土壤温度土壤水分的关系研究[J].干旱区地理,2009,32(4). |
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| 作者姓名： | 严俊霞 汤亿 李洪建 |
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| 作者单位： | 山西大学黄土高原研究所,山西,太原,030006 |
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| 基金项目： | 山西省留学回国人员科研启动基金，山西省青年基金，山西大学校基金 |
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| 摘 要： | 采用LICOR-6400便携式光合作用仪连接6400-09土壤叶室,对山西大学校园内的三种绿地(黑麦草、紫叶小檗和日本黄杨)的土壤呼吸进行了一年的测定.结果表明:土壤呼吸速率具有较明显的季节变化,冬春季较低,盛夏秋初较高,最大值出现在8月,最低值出现在12月.土壤呼吸速率与0～10 cm深度的土壤温度关系显著,黑麦草、紫叶小檗和日本黄杨土壤温度变化分别解释土壤呼吸季节变化的57.3%、65.4%、46.6%(线性函数)和60.6%、71.3%、50.7%(指数函数);黑麦草地土壤呼吸与土壤水分的关系均为极显著(p<0.01);用土壤温度和土壤水分的复合方程可以解释土壤呼吸变化的52%～84%.黑麦草、紫叶小檗和日本黄杨的年土壤呼吸总量分别为1.246 kg C·m-2、1.822 kg C·m-2、1.806 kg C·m-2.
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| 关 键 词： | 土壤呼吸 土壤温度和水分 季节变化 城市绿地 |
Soil respiration and its relations to environmental factors over three urban vegetation covers |
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| YAN Jun-xia,TANG-Yi,LI Hong-jian.Soil respiration and its relations to environmental factors over three urban vegetation covers[J].Arid Land Geography,2009,32(4). |
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| Authors: | YAN Jun-xia TANG-Yi LI Hong-jian |
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| Institution: | YAN Jun-xia,TANG-Yi,LI Hong-jian(Institute of Loess Plateau,Shanxi University,Taiyuan 030006,Shanxi,China) |
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| Abstract: | With the development of urbanizations more and more vegetation lands in the city have been built,however,the research on soil respiration for urban vegetation was seldom reported.As one of the important factors effecting global warming,soil CO2 efflux from different ecosystems have been observed,so it is need to make research about how much soil CO2 released from urban vegetation system.The objectives of this study is to examine seasonal patterns of soil efflux of three kinds of urban vegetation and to esti... |
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| Keywords: | soil respiration soil temperature and soil water content seasonal changes urban vegetation cover |
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