典型草原植物根-菌根-土壤属性对长期氮磷添加的响应及其对群落组成的调控机制

批准号:
31971506
项目类别:
面上项目
资助金额:
58.0 万元
负责人:
白文明
依托单位:
学科分类:
全球变化生态学
结题年份:
2023
批准年份:
2019
项目状态:
已结题
项目参与者:
白文明
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中文摘要
根和菌根是植物获取土壤养分的重要器官,它们决定着不同物种的养分利用策略、生存、生长以及生态系统过程与功能。但到目前为止对大气氮沉降背景下根和菌根属性是如何影响植物养分利用策略和驱动草地生态系统结构和功能变化的研究还非常匮乏。因此,我们利用中国科学院植物研究所多伦恢复生态学试验示范研究站的典型草原长期氮磷添加实验平台,通过测定根系形态、结构、化学、解剖属性和丛枝菌根侵染率、丛枝和孢囊丰富度等菌根属性,以及土壤理化属性以及植物群落物种组成和物种丰富度的测定,将植物根系属性-菌根真菌属性-土壤属性有机地整合起来,探讨典型草原不同物种、功能群根和菌根属性对长期土壤氮磷有效性改变的响应。揭示大气氮沉降增加造成土壤属性改变对根属性及其与菌根真菌共生关系的影响机理。解析根和菌根真菌在大气氮沉降增加导致物种多样性丧失和植物群落组成改变中的作用机制,为中国北方典型草原的经营管理和可持续利用提供理论依据。
英文摘要
Roots and the symbiotic mycorrhizal fungi are the particular organs that responsible for nutrients absorption, making the traits of root and mycorrhiza play essential roles in determining the growth, survival and ecological strategies of different species, as well as in driving the ecosystem functions and processes. However, the driving effect of root and mycorrhizal fungi traits on plants resource utilization strategies and ecosystem functions and processes of grassland under nitrogen deposition scenarios remains poorly understood. Therefore, an experiment was designed in the long-term nitrogen and phosphorus addition experimental platform in the Duolun Restoration Ecology Experimentation and Demonstration Station, Institute of Botany, the Chinese Academy of Science. The root architectural, morphological, chemical and anatomical traits, together with the associated mycorrhizal fungi traits (e.g. colonization rates, the richness of arbuscular mycorrhiza and sporocyst) of herbaceous species were estimated. And the soil properties, community composition and species richness were also determined. The root-mycorrhiza-soil system were integrated comprehensively to characterize the responses of root and mycorrhizal fungi traits across species and functional groups to the change of soil nitrogen and phosphorus availability. The effects of changed soil properties on root traits and the symbiotic relationship with mycorrhizal fungi were explored under the background of increased atmospheric nitrogen deposition. The study reveals the mechanism and the key roles of root traits and mycorrhizal fungi in the loss of species and the changes in plant community composition induced by the increased atmospheric nitrogen deposition. It provides theoretical foundation for the management and sustainable utilization of typical grasslands in north China.
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DOI:--
发表时间:2022
期刊:New Phytologist
影响因子:--
作者:Zhou Meng;Guo Yumeng;Sheng Jun;Yuan Yujia;Zhang Wenhao;Bai Wenming
通讯作者:Bai Wenming
DOI:10.1007/s11104-022-05533-y
发表时间:2022-06
期刊:Plant and Soil
影响因子:4.9
作者:Qingmei Li;Wenming Bai;Yumeng Guo;J. Sheng;Yujia Yuan;Wen‐Hao Zhang;Meng Zhou
通讯作者:Qingmei Li;Wenming Bai;Yumeng Guo;J. Sheng;Yujia Yuan;Wen‐Hao Zhang;Meng Zhou
Water-dominated negative effects of nitrogen enrichment on soil respiration in a temperate steppe
温带草原土壤呼吸以水为主的氮富集负面影响
DOI:10.1016/j.apsoil.2021.104023
发表时间:2021
期刊:Applied Soil Ecology
影响因子:4.8
作者:Li Kunyu;Niu Mengnan;Bai Wenming;Yang Zhongling;Li Guoyong
通讯作者:Li Guoyong
Root anatomical traits determined leaf-level physiology and responses to precipitation change of herbaceous species in a temperate steppe
根部解剖特征决定温带草原草本植物叶级生理和对降水变化的响应
DOI:10.1111/nph.16797
发表时间:2020-08-10
期刊:NEW PHYTOLOGIST
影响因子:9.4
作者:Zhou, Meng;Bai, Wenming;Zhang, Wen-Hao
通讯作者:Zhang, Wen-Hao
内蒙古退化典型草原恢复与培育的生态学机制研究
- 批准号:--
- 项目类别:重点项目
- 资助金额:292万元
- 批准年份:2020
- 负责人:白文明
- 依托单位:
内蒙古温带草原植物根叶属性对长期夏季增雨的响应及其对光合和蒸腾作用的驱动
- 批准号:31670481
- 项目类别:面上项目
- 资助金额:62.0万元
- 批准年份:2016
- 负责人:白文明
- 依托单位:
内蒙古温带草原根系周转模式及其对土壤有机质的贡献
- 批准号:31370468
- 项目类别:面上项目
- 资助金额:86.0万元
- 批准年份:2013
- 负责人:白文明
- 依托单位:
增温增雨对温带典型草原根系周转与土壤碳库影响的控制实验研究
- 批准号:31070432
- 项目类别:面上项目
- 资助金额:38.0万元
- 批准年份:2010
- 负责人:白文明
- 依托单位:
国内基金
海外基金
