生物扰动
- 网络Bioturbation
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泥鳅对水田上覆水中氮素动态的生物扰动效应
Bioturbation Effect of Misgurnus anguillicaudatus on Nitrogen Dynamic in Surface Water of Paddy Field
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生物扰动在水层-底栖界面耦合中的作用
Advance in bioturbation effect in benthic-pelagic interface
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应用生物扰动实验系统(AnnularFluxSystem)研究双壳类生物沉降作用
A Study on the Biodeposition of Bivalves with the Application of Annular Flux System
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薄层灰岩、纹层灰岩中生物扰动较弱,反映了P-T事件后萧条的海洋生态系统对底栖生物垂直钻孔作用的限制,生物扰动作用的缺乏有利于薄层、纹层灰岩的发育和保存;
The weak biodisruption in the thin bedded and laminate limestone indicates that the depressed marine ecosystem after the P-T Event set a limit to the drilling of benthos .
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安徽巢县下石炭统中的生物扰动构造
Bioturbate structures of Lower Carboniferous Series in Chaoxian county , Anhui Province
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局部有波状、透镜状层理、生物扰动层理和冲刷充填层理;
Local wavy , lenticular , bioturbate and scour-and-fill beddings ;
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剖面的下部常见生物扰动现象。
In the lower part of the section bioturbation is a common feature .
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颤蚓生物扰动对沉积物中重金属释放及形态分布的影响
Effects of Tubificid Bioturbation on the Release and Speciation of Heavy Metals in Sediment
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生物扰动和遗迹组构的描述与分析
The description and analysis of bioturbation and ichnofabric
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浪控三角洲的平原部分以分流河道和含植物根系和生物扰动构造的泛滥平原沉积为特征。
The delta plain facies is characterized by distributary channel sands and rooted and bioturbated flood plain sediments .
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作为水生态动力学的重要分支和前沿领域,生物扰动研究具有广阔前景。
As an important branch and front field in aquatic ecological dynamics , bioturbation study has a good prospect .
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江浙一带现代海滩的生物扰动构造及其指相意义
Bioturbation structures of modern beach sediments and their significance in determining of sedimentary environments in Jiangsu and Zhejiang provinces
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底栖多毛类是大型底栖动物的重要组成部分,种类多,分布广,它们引发的生物扰动有利于海洋沉积物改造。
As an important component of macrobenthos , benthic polychaetes are species-richness and widely distributed in the ocean . Bioturbation induced by polychaetes may have great impacts on sediment reworking .
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背景层内大量壳体相连的双瓣壳节肢动物化石和完整海绵体化石的存在则表明,背景层代表一个低氧、低能并具有有限生物扰动的沉积环境。
The presence of abundant articulated shells and sponge fossils in the background layer indicates that they deposited in a stagnant and anoxic bottom water environment with rare scavengers and limited bioturbation .
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由于从海床动力响应的角度来研究生物扰动对沉积物性质的改造,国内是首次,国外的研究也处于开始阶段,需要大量的基础研究。
It is first time to research the effect of bioturbation on the features of sediment as viewed from seabed dynamic response in China . It is also in the beginning phase in the world .
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如今,生物扰动对潮滩沉积物性质的改变已越来越引起国际地圈、生物圈计划的关注,尤其是生物扰动和水动力的耦合作用影响潮滩沉积物渗流差异问题。
Nowadays , the properties of sediments changed by bioturbation have been concerned by International Geosphere and Biosphere Plan ( IGBP ), especially the problems about the bioturbation and hydrodynamic coupling led to the tidal flat sediment flow differences .
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结果表明,硝化速率、反硝化速率、有机氮含量、硅质成分的溶解速率、生物扰动作用、孔隙率明显影响沉积物间隙水中营养盐的分布和沉积物水界面的交换通量。
The results demonstrated that nitrification rate , denitrification rate , organic nitrogen content , the dissolved rate of siliceous material , bioturbation , and porosity affect the distribution of nutrients in the pore waters and exchange fluxes of nutrients at the sediment-water interface .
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同时,用种内个体对数-正态分布法对各调查站位大型底栖生物群落结构受扰动的程度进行了分析,结果有60%的站位底栖生物群落已受到中度的扰动。
At the same time the disturbance of the community structure of macrobenthos in each station has been analysed by using the log-normal distribution of individuals among species , and the result shows that about 60 % stations have been disturbed .
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由于生物过程的复杂性,生物扰动对沉积物的固结稳定性是加强了还是削弱了仍有争议,本文通过室内试验来研究生物扰动对潮滩沉积物侵蚀性的影响。
Because of the complexity of biological processes , disturbance of the sediment consolidation of stability is to strengthen or weakened still controversial .