| 南亚热带森林凋落物对土壤呼吸的贡献及其影响因素 |
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| 引用本文： | 邓琦,刘世忠,刘菊秀,孟泽,张德强.南亚热带森林凋落物对土壤呼吸的贡献及其影响因素[J].地球科学进展,2007,22(9):976-986. |
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| 作者姓名： | 邓琦 刘世忠 刘菊秀 孟泽 张德强 |
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| 作者单位： | 1. 中国科学院华南植物园,广东,广州,510650;中国科学院研究生院,北京,100039
2. 中国科学院华南植物园,广东,广州,510650 |
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| 基金项目： | 国家自然科学基金
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中国科学院知识创新工程项目 |
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| 摘 要： | Three main types of Soil respirations(S+L and S) in southern subtropical forests in Dinghushan biosphere reserve were consecutively being monitored over 31 months by the approach of static chamber-gas chromatograph techniques. Research shows that: annual mean contribution rates of litter-fall to soil respiration in the monsoon evergreen broadleaf forest (BF), mixed broadleaf-coniferous forest (MF) and coniferous(pine) forest (PF) reached 27.82%、33.29%和36.35% respectively; Moreover, all three types of forests displayed the same seasonal dynamic features with the peaks contributions of them were from April to September, which accounts for 71.87%、61.89% and 70.39% of annual total contributions of litter fall to soil respiration respectively. Soil respiration(S+L) had an obviously positive relationship with the seasonal changes of litter-fall input（P<0.001; And soil water content had a significant impact on the contribution of litter-fall to soil respiration in the three types of forests (P<0.001); Soil temperature had positive correlativity with soil respiration flux, though it has no distinctive relationship with contribution of litter-fall to soil respiration; the contribution ratios of litter-fall to soil respiration on rainy days were 28.63%、38.20% and 40.12% respectively, which were significantly higher than those in the sunny days in the three types of forests.
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| 关 键 词： | 南亚热带森林 土壤呼吸 凋落物 贡献 影响因素 |
| 文章编号： | 1001-8166（2007）0943976-11 |
| 收稿时间： | 2007-02-28 |
| 修稿时间： | 2007-02-282007-08-07 |
Contributions of Litter-fall to Soil Respiration and Its Affacting Factors in Southern Subtropical Forests of China |
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| DENG Qi,LIU Shi-zhong,LIU Ju-xiu,MENG Ze,ZHANG De-qiang.Contributions of Litter-fall to Soil Respiration and Its Affacting Factors in Southern Subtropical Forests of China[J].Advance in Earth Sciences,2007,22(9):976-986. |
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| Authors: | DENG Qi LIU Shi-zhong LIU Ju-xiu MENG Ze ZHANG De-qiang |
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| Institution: | 1.South China Institute of Botany, Chinese Academy of Sciences，Guangzhou 510650,China;2.Graduate School, Chinese Academy of Sciences，Beijing 100039,China |
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| Abstract: | |
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| Keywords: | Southern subtropical forest Soil respiration Litter-fall Contribution Affacting factor |
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