西北林学院学报2011，Vol.26Issue(3)：79-83,128,6.
UV-B辐射增强对森林生态系统的影响
Effects of Elevated UV-B Radiation on Forest Ecology
摘要
Abstract
Advances in the researches in the effects of elevated UV-B radiation on forest eco-system were reviewed from the aspects of tree growth, competitive balance of forest ecosystems, community dynamics, ecosystem nutrient allocation and the indirect impacts. Conifers, shade tolerant and high altitude tree species are more tolerant to the elevated UV-B radiatiton. Therefore, the degradation of UV-B sensitive species would be accelerated under UV-B elevated conditions. The community structure would also be changed and the forest community succession and sapling regeneration at high altitude area would be seriously effected. Nutrient allocation of the forest ecosystem would also be changed, which are resulted from the changes of balance between carbon and nitrogen within plants. However, the effects of enhanced UVB radiation on tree growth and nutrition distribution system are still ambiguous, further studies are needed. Particularly, interaction effects between plant species, plants and animals, microorganisms,as well as above and belowground parts are needed to be understood and monitored in long term.关键词
UV-B/生长/竞争平衡/群落/演替Key words
UV-B / growth / competition balance / community / succession分类
农业科技引用本文复制引用
杨刚,程颂,于慧..UV-B辐射增强对森林生态系统的影响[J].西北林学院学报,2011,26(3):79-83,128,6.基金项目
国家自然科学基金项目(30872000) （30872000）
中国科学院成都山地灾害与环境研究所人才引进基金 （）
中国科学院知识创新工程重要方向资助项目(KZX2-YW-331) （KZX2-YW-331）
