| UV-B辐射对植物残体分解的影响及其机理 |
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| 引用本文： | 王海云,李元,祖艳群.UV-B辐射对植物残体分解的影响及其机理[J].农业环境科学学报,2006,25(Z1):443-446. |
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| 作者姓名： | 王海云 李元 祖艳群 |
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| 作者单位： | 云南农业大学资源与环境学院,云南,昆明,650201 |
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| 摘 要： | UV-B辐射对植物残体分解的影响在植物营养循环中起着重要的作用,就UV-B辐射对植物残体分解的影响及其机理进行了综述。UV-B辐射对植物残体分解的影响包括直接影响和间接影响。直接影响指分解期接受UV-B辐射,从而对分解者产生直接作用以及光降解,这与植物类型、微生物对UV-B辐射响应的种内和种间的差异、微生物的色素、微生物的特性、环境因素等相关。间接影响是指植物生长期接受UV-B辐射,导致植物化学成分的改变,从而对分解者产生影响,这些化合物包括丹宁、木质素等酚类化合物。
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| 关 键 词： | 植物残体 分解 UV-B辐射 直接影响 间接影响 营养循环 |
| 文章编号： | 1672-2043(2006)增刊-0443-04 |
| 修稿时间： | 2006年2月9日 |
Effects of UV-B Radiation on Litter Decomposition and Mechanism |
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| WANG Hai-yun,LI Yuan,ZU Yan-qun.Effects of UV-B Radiation on Litter Decomposition and Mechanism[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2006,25(Z1):443-446. |
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| Authors: | WANG Hai-yun LI Yuan ZU Yan-qun |
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| Abstract: | This article mainly outlines effects of UV-B radiation on litter decomposition and mechanism.The effects of UV-B radiation on litter decomposition include direct effects and indirect effects,respectively.The direct effects mean UV-B irradiation affect decomposer and photodegradation during decomposition period.The direct affects relate to the functional types on plants,the interspecific differences and intraspecific differences of microorganism responses to UV-B radiation,the pigments and characters of microorganisms,and the environmental factors.The indirect effects are related to the changes of chemical compositions in plant,which can alter litter decompositions.These chemicals include mainly phenolic compounds,such as tannis and lignin,which are changed by UV-B radiation during plant growth stages.In addition,effects of UV-B radiation on litter decomposition significantly affect nutrient cycling. |
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| Keywords: | litter decomposition UV-B radiation direct effects indirect effects nutrient cycling |
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