物质循环

能量转化和物质循环的经济成果是创造使用价值。

The economic result of energy transformation and material cycle is to create use value .

苔草植物分类、利用及物质循环研究进展

Review of studies on the classification , application and material cycle of plants in genus Carex

减少的有林木产品、固定C、营养物质循环、光合释氧4类功能指标。

While forest product , fixed C , circulation of nutrients and photosynthesis reduced .

秦岭造山带前寒武纪地幔化学分区及壳幔物质循环&Pb，Nd同位素及微量元素证据

Precambrian chemical division of mantle and crust-mantle interaction in Qinling region : evidence from Pb-Nd isotopic and trace element studies

城市生态系统中物质循环过程不闭合的特点，决定了城市土壤是养分和污染物末端固定者，因而城市土壤是一个人为的某些元素的地球化学垒（barrier）。

The loop of element translocation in urban ecosystem causes inevitably accumulation of nutrients and pollutants in urban soils , therefore urban soils are becoming a geochemical barrier of various elements .

UV－B辐射影响植物物候、形态和次生代谢，从而改变生态系统的物种结构、竞争性平衡、食物链、植物病原体、物质循环、真菌移殖与叶片分解。

UV-B radiation affects plant phenology , morphological characteristics and secondary metabolism , and lead to changes in species structure , competitive balance , food webs , plant pathogens , matter cycling , fungal colonization and leaf decomposition .

通过藻生长量及其体内H2O2含量可看出，十二烷基苯磺酸钠（LAS）对藻生长及其物质循环过程有强烈的抑制作用，随着LAS的浓度的增大而增加，毒害作用不断加重。

Linear Alkyl Sulfonate ( LAS ) restrain the growth of algae , have toxicity on algae , it can be proved by algae shape and quantity H2O2 in it 's body .

选取草原生态系统在控制土壤侵蚀、减少土壤肥力流失、营养物质循环、CO2储存和O2释放方面的功能指标，对草原生态系统服务间接价值进行了动态评估。

The changes of steppe ecosystem values were estimated by selecting the ecosystem functions such as soil erosion control , soil nutrient maintaining , nutrient cycling , C storage , and O_2 production .

1~4月通过枯落生物量回归到地面的N、P总量分别达到149.4t和18.2t，对整个湿地生态系统的生源物质循环以及生态环境产生很大影响。

The quantities of N and P , returning to the ground with withering in different ecologic zones , reach 149.4 t and 18.2 t from January to April , and the biogeochemistry cycle and ecological environment of the tidal flat can be seriously affected .

水陆交换的物质循环生态系统；

Material circulatory eco system type of land and water exchange ;

茶园&土壤系统的物质循环对土壤酸化的影响

Effect of Biogeochemical Cycle in Tea Garden on the Soil Acidification

那么，是否真的存在完美的全社会物质循环呢？

Then , is there perfect material circulation in whole society ?

大型土壤动物在沙漠生态系统物质循环中的作用研究

Effect of Macrofauna on the Material Circulation in Tengger Desert Ecosystem

物质循环和能量流动是海洋生态系统运转的两个基本过程。

Substance-recycling and energy-flowing are two basic processes in marine ecosystem .

循环经济是按自然生态物质循环方式运行的体现可持续发展特征的现代经济模式。

Circulatory economy develops biologically with the characteristics of modernity .

定西县旱农生态系统中物质循环的分析

An Analysis of Matter Cycles in Rainfed Land Agroecosystem in Dingxi County

研究涉及养殖水系营养物质循环流动。

This study focused on the recirculation of nutrients in aquaculture water .

在海洋生态系统中，氮循环是海洋物质循环的重要环节。

In marine substance-recycling , nitrogen-recycling is very important to marine ecosystem .

珲春市农田生态系统的物质循环分析

A study on the substantial cycle of the farmland ecosystem in Hunchun

废物处理与地球物质循环

Waste Treatment with Cycle of Matter in the Earth

放牧生态系统中的组织物质循环及其在牧场管理中的应用

Tissue Turnover in the Grazing Sward and Grazing Management

森林生态系统物质循环研究中的生物地球化学方法和实验技术

Biogeochemical methods and experimental techniques for studying the mineral cycling in forest ecosystems

试论立体农业的能量利用和物质循环

On Energy Exploitation and Substance Recycle in Three-dimension Agriculture

生物课上，学了生物系统的物质循环。

In the biological class , has studied the living system material circulation .

细菌生理群直接参与水体的物质循环。

Physiological groups of bacteria are partyies to the matter cycle in water .

农业生态系统物质循环的分室模型

A compartment model of nutrient cycling in agroecosystem

物质循环流动与价值循环流动

Value circular flow and material circular flow

小气候是生物生长的环境，能量平衡是物质循环的驱动力。

Microclimate is the ambient of plant and energy balance drives the circulation of matter .

大气沉降在全球物质循环中的作用更加显现。

The vital function of deposition will be more apparent on the global atmospheric circulation .

酸性沉降环境中森林生态系统的物质循环&树冠穿透水的水质及其形成机理

Nutrient cycles in a forested ecosystem under acidic deposition circumstance throughfall chemistry and its formation