助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   remineralization 在 地质学 分类中 的翻译结果: 查询用时:0.052秒
图标索引 在分类学科中查询
所有学科
地质学
口腔科学
中药学
药学
农业基础科学
预防医学与卫生学
基础医学
材料科学
一般化学工业
更多类别查询

图标索引 历史查询
 

remineralization
相关语句
查询“remineralization”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  remineralization
The remineralization of the detritus pool is an important source of nutrient regeneration, It can compensate 23 percent of the nutrient consumed by the production process.
      
The process of remineralization requires appropriate conditions to occur, and one of those conditions is pH.
      
The turnover of bacteria is included implicitly in processes such as detritus decomposition, DON remineralization, pelagic nitrification and denitrification.
      
The rapid recovery of the crop in the nutrient-poor water points to intensive remineralization processes.
      
Regional studies of daily, seasonal and size fraction variability in ammonium remineralization
      
更多          


The potential application of the cosmogenic nuclide 10 Be in marginal seas and island-arc system study has been discussed. Dissolved beryllium 10 concentration profiles in seawaters of the East China sea and the Kuroshio have been investigated. The results show that 10 Be concentrations in this area are mainly controlled by surface biological productivity, partical remineralization, and the degree of mixing with Changjiang River (the Yangtze river) and Kuroshio waters. Generally the...

The potential application of the cosmogenic nuclide 10 Be in marginal seas and island-arc system study has been discussed. Dissolved beryllium 10 concentration profiles in seawaters of the East China sea and the Kuroshio have been investigated. The results show that 10 Be concentrations in this area are mainly controlled by surface biological productivity, partical remineralization, and the degree of mixing with Changjiang River (the Yangtze river) and Kuroshio waters. Generally the 10 Be water depth profiles can be divided into three layers: the surface mixing layer, the particulate 10 Be regeneration layer and the bottom layer. Surface water 10 Be concentrations increase gradually towards the Okinawa Trough and increase sharply at the edge of the Kuroshio Current. Vertical distributions of 10 Be show that 10 Be is enriched in the bottom waters near the Yangtze river estuary and the central continental shelf. Box model results indicate that 10 Be input from the Kuroshio current is more important than Yangtze river input and atmospheric precipitation. About 81% of the 10 Be input to the East China sea is scavenged into the sediments and 19% of the 10 Be flows out of the East China sea by currents and water exchange. The 10 Be sedimentation flux in the East China sea is nearly five times of the average global 10 Be production rate. Therefore the East China sea may be an important sink for 10 Be.

主要讨论宇宙射线成因核素10 Be(T1 2 =1 .5Ma)在大洋边缘海洋学尤其是中国近海海洋研究中的应用。在过去的近 2 0年中 ,在中国开展的10 Be研究在黄土堆积年龄及地层对比方面获得了诸多成果 ,但在海洋方面的应用研究距国际水平仍有一定的差距 ,尚需进一步加强。综述了海洋环境中10 Be作为一个地球化学示踪剂的研究现状 ,着重介绍10 Be在中国东部海域的收支平衡模式以及讨论10 Be在太平洋西部边缘海及岛弧地区的应用前景

Marine carbon cycle is the mostly important part of the global carbon cycle,which is the key to controlling the changes of the global climate. The oceans are a huge reservoir of carbon and have the capacity for absorbing and retaining CO_2, which plays an important role in regulating the levels of atmospheric CO_2. The study of carbon transfer and carbon end-result in the ocean would help us to forecast the concentrations of atmospheric CO_2 in the future, and also the changes of global climate. This paper presents...

Marine carbon cycle is the mostly important part of the global carbon cycle,which is the key to controlling the changes of the global climate. The oceans are a huge reservoir of carbon and have the capacity for absorbing and retaining CO_2, which plays an important role in regulating the levels of atmospheric CO_2. The study of carbon transfer and carbon end-result in the ocean would help us to forecast the concentrations of atmospheric CO_2 in the future, and also the changes of global climate. This paper presents the main advances in research on the marine carbon cycle and biogeochemical processes, which include the air-sea CO_2 exchange process, the carbon vertical and horizontal transfer in seawater, the carbon flux between seawater and sediment, the input flux of the river and the marine carbon cycle model etc. The total inorganic carbon (TIC) is the main carbon species in seawater, whose concentration is about 1.5~2.5 mmol/kg. The air-sea CO_2 flux is about 1.6~2.0GtC/a calculated from formula and model. There is still some controversy over the exact figure and its future changes, especially if it involves considerable uncertainty such as the function of air-sea CO_2 transfer coefficient which incorporates with many physical factors. The uptake capacity for CO_2 varies significantly due to many factors: solubility of CO_2, seawater partial pressure, carbonate system of mixed layer, temperature, salinity and alkalinity. All of these are various in different seawater, which would act as carbon source or sink of atmospheric CO_2, along with the influence of seasonal and inter-annual variability. The vertical transfer of carbon in seawater is mostly various and complex processes, but mainly depends on the biological pump. The atmospheric CO_2 is translated into dissolved organic carbon (DOC) and particulate organic carbon (POC) by photosynthesis of phytoplankton and biology metabolism, which is pumped into the deep seawater by food chain processes, physical mixing, transport and gravitational settling. The primary production of global marine ranges from 36.5GtC/a to 103GtC/a, but the majority of which is recycled within the euphotic zone supplying a standing stock of marine microorganisms. It is also estimated that for primary production about 4GtC/a to 20GtC/a is exported to the deep ocean. The major part of export production pumped into the deeper seawater column is also remineralized during sinking; only 0.03% to 0.8% of primary production can be delivered to the sediment. The concentrations of DOC and POC usually are very abundant in surface and subsurface of most oceans, and decrease with the depth of seawater, however, they will keep a lower constant value in deep seawater. The contents of DOC in seawater range from 60μmol/L C to 90μmol/L C in the surface, about 40μmol/L C in the deep. The distributions of DOC and POC show a decreasing trend from the inner shelf to the slope and to open sea because of the river inputs and higher primary productivity. The carbon benthic flux of seawater-sediment interface is one of the important aspects of marine carbon cycle. The remineralization of POC in the sediment and the diffusion of DOC across the sediment-water interface can increase the concentrations of DOC and DIC; enrich the dissolved nutrients in deep seawater. The nutrient-enriched deep seawater also is taken to the surface by the adverse/diffusive upwelling and recycles in the euphotic zone by biological activities. Carbon derived from land also enters into the ocean via river as well as to some extent via groundwater; the global natural transport flux from river to the ocean is about 0.8GtC/a. The marine carbon cycle model has been built up to stimulate all kinds of physical, chemical and biological processes in the ocean. The model forecasts the atmosphere conditions in the pre-industrial and the climate changes in the future, and also estimates the controlling functions of increasing CO_2 concentrations into the ocean. The model includes a lot of styles such as BM, GCM and B-GCM etc, and develops from one dimension to three dimensions. The three dimensional biological geochemistry model would be the important and efficient tool for studying the marine carbon cycle. The latest development of determining DOC and POC, and the future for the direction of marine carbon cycle is also summarized in the paper.

海洋碳循环是全球碳循环的重要组成部分,是影响全球变化的关键控制环节。海洋作为一个巨大的碳库,具有吸收和贮存大气CO2的能力,影响着大气CO2的收支平衡,研究碳在海洋中的转移和归宿,对于预测未来大气中CO2含量乃至全球气候变化具有重要意义。综述了海洋CO2通量,海水中碳的迁移和海洋沉积物及河口通量的研究状况,介绍了生物泵作用,碳循环模型的发展以及分析方法的最新发展等,并展望了海洋碳循环研究的未来发展趋势。

 
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关remineralization的内容
在知识搜索中查有关remineralization的内容
在数字搜索中查有关remineralization的内容
在概念知识元中查有关remineralization的内容
在学术趋势中查有关remineralization的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社