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从生物力学角度诠释富营养化引发的水生植物衰退机理
Role of biomechanics in decline of aquatic macrophytes during the progress of eutrophication

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祝国荣 1   张萌 2   王芳侠 1   高阳 1   曹特 3 *   倪乐意 3 *  
文摘 水体富营养化诱发的水生植物衰退机理已成为近年来水域生态学领域的研究热点.本文系统阐明了目前有关水生植物生物力学性能及其对水体富营养化的响应和其在该进程中水生植物衰退过程中的作用等研究进展.现有研究表明水生植物生物力学性能主要包括茎/叶/叶柄的抗拉性能(挺水植物为茎/叶柄的抗弯性能)和根的锚定性能;受水体富营养化主要环境变量(富营养底泥、水体高浓度氮磷和可利用光缺乏)的显著影响且具种间差异;还与生长、形态、生物量分配、组织结构、代谢等其他受水体富营养化显著影响的指标密切相关,且在应对水体富营养化时与生物力学间具有一定的协同作用;此外,生物力学性能受损不仅阻断植株的“生命进程”,还严重削弱断枝后植株的资源获取能力和断枝的扩散定植能力,极大降低其适合度.根据野外调查和现有研究结果,生物力学性能的改变的确在富营养化水体水生植物衰退进程中起到关键作用.生态系统是多因子共同作用的综合系统,但目前的水生植物生物力学性能研究主要集中在水体富营养化的3大特征因子,亟需进一步深入系统开展随水体富营养化而改变的溶解氧、藻毒素、食草动物等其他因子的影响研究,以便更加全面真实地诠释水体富营养化造成水生植被衰退的生物力学机理.
其他语种文摘 The mechanism of the decline of aquatic macrophytes in eutrophic waters has recently become a central and growing interest to aquatic ecologists. Here,we described the biomechanical properties of aquatic macrophytes,their responses to eutrophication and their possible contribution to the decline caused by eutrophication. Different from most terrestrial plants,the biomechanical properties of aquatic macrophytes mainly included the tensile properties of stems /leaves /petioles (the bending properties of stems / petioles for emergent macrophytes) and root anchorage strength. Three vital factors of eutrophication,the fertile sediment,higher concentrations of nitrogen and phosphorus in water-column and limited light availability,had significantly negative and species-specific influences on the biomechanical properties of aquatic macrophytes. Additionally,there were strong relationships between the biomechanical properties and the other aspects,which were also significantly affected on,such as plant growth,morphology,biomass allocation,anatomic structure and metabolism,as well as collaboration between these factors during their response to the eutrophication. What's more,the mechanical damages interrupted the life progress because of a vital reduce in resource acquisition for parent plants and a relative low spreading and colonize ability for all fragments,resulting in a low fitness. Numerous field investigations and laboratory experiments can imply that the changed biomechanical properties do play a key role in the decline of aquatic macrophytes during the progress of eutrophication. As the multiple interactions among the environmental factors existed in natural waters,most studies only focused on the effects of the three vital factors resulted from eutrophication on the biomechanical properties of aquatic macrophytes. Therefore,further and systematical studies should be conducted on the plant biomechanical properties responding to multiply factors (dissolved oxygen,algal toxins and herbivores) because these factors also have significant effects during eutrophication. Thus the biomechanical mechanism for the decline of aquatic macrophytes in eutrophic waters can be well revealed.
来源 湖泊科学 ,2017,29(5):1029-1042 【核心库】
DOI 10.18307/2017.0501
关键词 水生植物 ; 生物力学 ; 富营养化 ; 衰退机理
地址

1. 河南师范大学水产学院, 新乡, 453007  

2. 江西省环境保护科学研究院, 南昌, 330029  

3. 中国科学院水生生物研究所, 中国科学院东湖湖泊生态系统试验站, 武汉, 430072

语种 中文
文献类型 研究性论文
ISSN 1003-5427
学科 植物学;环境污染及其防治
基金 国家自然科学基金项目 ;  河南省科技厅项目 ;  河南师范大学项目
文献收藏号 CSCD:6065317

参考文献 共 119 共6页

1.  Cao T. Carbon and nitrogen metabolism of an eutrophication tolerative macrophyte,Potamogeton crispus,under NH_4~+ stress and low light availability. Environmental and Experimental Botany,2009,68:74-78 被引 20 次    
2.  Xie Y. Short-time response in root morphology of Vallisneria natans to sediment type and water-column nutrient. Aquatic Botany,2005,81:85-96 被引 5 次    
3.  Xie Y. Morphological and physiological responses to sediment type and light availability in roots of the submersed plant Myriophyllum spicatum. Annals of Botany,2007,100:1517-1523 被引 2 次    
4.  Ni L Y. Growth of Potamogeton maackianus under low-light stress in eutrophic water. Journal of Freshwater Ecology,2001,16:249-256 被引 12 次    
5.  Cao T. Effects of moderate ammonium enrichment on three submersed macrophytes under contrasting light availability. Freshwater Biology,2011,56:1620-1629 被引 20 次    
6.  Xiong H F. Structural and metabolic responses of Ceratophyllum demersum to eutrophic conditions. African Journal of Biotechnology,2010,35(9):5722-5729 被引 1 次    
7.  Jupp B P. Limitation on macrophytes in an eutrophic lake,Loch Leven. Journal of Ecology,1977,65:175-186 被引 11 次    
8.  Phillips G L. Mechanism to account for macrophyte decline in progressively eutrophicated freshwaters. Aquatic Botany,1978,4:103-126 被引 48 次    
9.  Waycott M. Accelerating loss of seagrasses across the globe threatens coastal ecosystems. PNAS,2009,106(30):12377-12381 被引 105 次    
10.  Gaylord B. Flow and flexibility. I. effects of size,shape and stiffness in determining wave forces on the stipitate kelps Eisenia arborea and Pterygophora californica. Antiquite Classique Revue Interuniversitaire Detudes Classiques,1997,65(24):415-416 被引 1 次    
11.  Koehl M A. Ecological biomechanics of benthic organisms: Life history,mechanical design and temporal patterns of mechanical stress. Journal of Experimental Biology,1999,202:3469-3476 被引 1 次    
12.  Bouma T J. Trade-offs related to ecosystem engineering: A case study on stiffness of emerging macrophytes. Ecology,2005,86:2187-2199 被引 13 次    
13.  Niklas K J. Plant biomechanics: an overview and prospectus. American Journal of Botany,2006,93(10):1369-1378 被引 1 次    
14.  Demes K W. Variation in anatomical and material properties explains differences in hydrodynamic performances of foliose red macroalgae (Rhodophyta). Journal of Phycology,2011,47:1360-1367 被引 1 次    
15.  Miler O. Biomechanical properties of aquatic plants and their effects on plant-flow interactions in streams and rivers. Aquatic Sciences,2012,74:31-44 被引 6 次    
16.  Nepf H M. Flow and transport in regions with aquatic vegetation. Annual Review of Fluid Mechanics,2012,44:123-142 被引 32 次    
17.  Nikora V. Flow-biota interactions in aquatic systems: Scales,mechanisms and challenges. Environmental fluid mechanics,2012:217-235 被引 1 次    
18.  Moulia B. Plant biomechanics and mechanobiology are convergent paths to flourishing interdisciplinary research. Journal of Experimental Botany,2013,64(15):4617-4633 被引 4 次    
19.  Henry P Y. Bending properties of a macroalga: adaptation of peirce's cantilever test for in situ measurements of Laminaria digitata (Laminariaceae). American Journal of Botany,2014,101(6):23-31 被引 1 次    
20.  Zhu G R. Associations between the morphology and biomechanical properties of submerged macrophytes: implications for its survival and distribution in lake Erhai. Environmental Earth Sciences,2015,74(5):3907-3916 被引 4 次    
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