碳循环

Proper shrubbery – Tamarix ramosissima was taken as the research subject, Through the observation of upper organic matter aggradation and the research of underground annual changes of soil organic carbon. Make sure the accumulations of soil organic carbon and the carbon cumulation under the Tamarix,The results indicate that: 1）Based on one year's observation,We found that,the formation of annual layer depending on the dynamic balance between hearty growth of Tamarix and reposeful accumulated environment.

本研究选择干旱区特征性灌木植物——柽柳为研究对象，通过对柽柳冠下地表有机质沉积的观测以及地下土壤有机碳含量年际变化的研究，查明柽柳冠下土壤有机碳的积累情况及其碳蓄积作用，并探讨柽柳在全球气候变化和碳循环中的作用及贡献，为进一步研究干旱区碳循环及其碳汇功能提供基础数据。

The differentiation of crop ecotype will improve the accuracy in modeling carbon and water cycle in regional scale.

这种生态功能类型的划分为提高碳循环、水循环以及水碳耦合循环模型在区域尺度上应用的精度是有益的。

ABSTRACT Global carbon cycle is a very important issue in the study of global climate change. Forest ecosystem carbon cycle is one of the important part of global carbon cycle, but at the present time there are considerable uncertainties in the research of global carbon cycle, which also exist in forest ecosystems carbon cycle research, especially in the estimation of carbon storage of region forest ecosystems and CO〓 fluxes exchanging with other systems.

全球碳循环是全球气候变化研究的核心问题之一，森林生态系统碳循环是全球碳循环的重要组成部分，目前在全球碳循环的研究中还存在很大的不确定性，这种不确定性同样存在于森林生态系统碳循环的研究中，尤其表现在对区域森林生态系统碳库大小及其与大气CO〓交换通量的估计上。

In this paper, the reviews of chemical weathering, global carbon cycling and the interrelation among their characteristics as well as the studies on fluvial hydro-chemistry at home and abroad are included.

本文综述了化学风化作用与全球碳循环的研究现状，着重介绍了化学风化作用与碳循环的特征之间的相互作用关系，详细阐明了在二者的影响下国内外河流水化学的研究成果。

The carbon cycle is the cycle in which carbon is exchanged between the hydrosphere, atmosphere, biosphere, and geosphere of the Earth.

碳循环是循环中，碳是交换之间的水，大气，生物圈，地圈的地球。

Therefore, the study of dynamic transport and flux of organic carbon in salt marsh areas is the key role in ecosystem of salt marsh areas, which is also a neglecting part of global carbon cycle research in coastal zone.

因此，盐沼地区有机碳的动力输移与通量研究在湿地生态系统碳循环中起着关键性作用，也是全球碳循环研究在海岸带比较薄弱的一环。

The impurities generating mechanism is explored and corresponding technical plan is provided for determining and diminishing the impurities including diphenyl methane, triphenylmethane, triphenylcarbinol, 4-methy benzophenone, 4-chloro benzophenone and etc. in order to produce high purity benzophenone.

利用化学技术、循环经济和产业生态学原理结合本生产工艺过程的特点确立包括碳循环、苯循环、工艺水循环、氯的回收循环等闭合循环技术组合，设计了光气即产即用技术、倾析分离技术、能量多级利用技术、蒸发—冷凝联用和多热源组合集成技术、二苯甲酮纯化技术等实用方案，实现经济地生产清洁的高纯度产品和生产过程废物零排放。

Considering many biophysics processes such as the atmosphere,hydrology,plant leaf N content et al.a multiple layer,two-leaf canopy model for predicting of mass transportation and energy exchange between plant canopies and the atmosphere has developed after dividing the canopy height into three layers,and the sunlit and shaded leaf area index was computed respectively at different layers through introducing a foliage clumping index,it is important to distinguish the spatial light distribution and so leaf photsynthesis.

多层—双叶模型对冠层上方碳通量的模拟：综合考虑农田水、热因子及叶片氮含量的非线性垂直分布对碳、水循环的影响，将农田按植株高度分为上、中、下三层，并通过叶片集聚指数计算阴、阳叶面积以区分叶片的空间分布受光状态，建立了均匀农田与大气间物质输送和能量交换的多层—双叶模型，对农田冠层上方基于光合—呼吸的碳循环过程进行了模拟应用研究。

Carbon cycle The circulation of carbon between living organisms and the environment.

碳循环：碳在生物体和环境之间的循环。

The productivity of terrestrial ecosystem is a key part of carbon cycle in global change research.

陆地生态系统碳循环是全球变化研究的核心内容之一，而陆地生态系统生产力是碳循环研究中的重要组成部分。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。