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号召伦贝尔草原壤和栽物矿物元斋散布匹特点

来源:[db:来源] 作者:admin 人气: 发布时间:2019-01-10
摘要:1 2016 0.0 0.0 金樑, 孙儿子莉, 王强大, 董梅, 王晓娟, 王茜, 张明. AM真菌在草原生态体系中的干用. 生态学报, 2016, 36(3): 873-882. Jin L, Sun L, Wang Q, Dong M, Wang X J, Wang Q, Zhang L. Functions of arbuscul

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  金樑, 孙儿子莉, 王强大, 董梅, 王晓娟, 王茜, 张明. AM真菌在草原生态体系中的干用. 生态学报, 2016, 36(3): 873-882.

  Jin L, Sun L, Wang Q, Dong M, Wang X J, Wang Q, Zhang L. Functions of arbuscular mycorrhizas in grassland ecosystems. Acta Ecologica Sinica, 2016, 36(3): 873-882. (in Chinese)

  Arbuscular mycorrhizal (AM) fungi are important soil microorganisms, which can form symbioses with more than 80% of vascular plants in terrestrial ecosystems. It has been demonstrated that AM fungi could improve the growth of host plants through regulation of their physiological and biochemical characteristics. In light of this, AM fungi could regulate plant intra-and inter-specific competition in natural habitats. Recently, using AM fungi to protect plant biodiversity and maintain plant community stability in grassland ecosystems has generated much interest. Here, the functions of AM fungi are discussed at the autecology, population, community and ecosystem levels in order to discover the relationship between AM fungi and host plants. There are three different responses of individual host plants to AM fungi symbiosis, including positive, negative and neutral effects. At the population and community levels, AM fungi could regulate intra- and inter-specific competition by influencing the transportation of nutrients and water among individuals, such as to regulate herbaceous and poisonous plant populations. AM fungi also could maintain plant community structures and plant diversity in grasslands by regulating the plant competition. At the ecosystem level, AM fungi could promote the process of community succession, and thus could be used in bioremediation of damaged ecosystems. This review aims to provide theories and methods for the protection of grassland ecosystems by integrating the uses of AM fungi.

  AM真菌是壤生态体系中要紧的微生物类帮,能与大陆生态体系中80%以上的初等栽物确立共生体系。当前,AM真菌在护持草原生态体系摆荡性中的干用曾经成为生态学切磋的暖和点效实之壹。基于此,从栽物集儿子体、种帮、帮落和生态体系等不一层次探寻求AM真菌在护持栽物帮落多样性和草原生态体系摆荡性中的干用。剖析发当今集儿子体程度上,AM真菌对宿主栽物具拥有促违反灵应、按捺效应或中性效应。在种帮程度上,剖析AM真菌对不一宿主栽物吸取壤矿质营养的分派和调控战微,环绕结合草原栽被的两父亲结合成分:牧草和拥有毒栽物,论述AM真菌对栽物种帮增长和萎落的调控机制,并从草原栽物帮落的种差异和摆荡性角度,讨论AM真菌与栽物帮落之间的相干性。在生态体系程度上,环绕AM真菌对草原生态体系的演替和退步草原的修骈等展开论述,以期为使用AM真菌展开草原生态体系维养护和恢骈办供即兴实根据,并对草原菌根生态学范畴不到来的切磋终止展望。

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