生物量

With the increase in Cu concentration in the solutions of the water culture, the plant height, biomass of the overground part, root length and weight of the vegetables decreased.

在水培条件下，随着铜添加浓度的升高，各蔬菜的株高、地上部生物量、根长和根重均逐渐降低。

Mostly it is manifested by the increase of biomass of the rice plant. And the pore weight of overground and underground, as well as the height of plant is increased by 5.17%, 25.0% and 4.09% separately.

芽孢杆菌Drt-11对稻苗生长具有明显的促生作用，主要表现在稻苗生物量的增加，地上、地下部干重和株高分别比对照增加5.17%，25.09%和4.09%。

For studied twenty species in ten microsites, the mean seedling recruitment percent (from seed to seedling overwinter survival) were about 10% to 30%.4 Microsite and seed mass both significantly affected seedling growth rate and biomass allocation characteristics.

在本研究的几个微生境下，种子幼苗平均更新补充概率约为10％～30％。4微生境和种子大小显著影响了幼苗的生长率和生物量分配特征。

The results showed that the sprout height, basal stem diameter, paripinnate number and biomass of sprout of different R. typhina populations differed significantly.

结果表明：3个种群克隆分株产生萌条的株高、基径、复叶数和生物量积累量均有很大差异。

Three species of Peganum seedlings were treated with different concentrations of NaCl. The content of main inorganic ions and organic solutes, the osmotic potential and the osmotic adjustment ability of roots and leaves were determined in 28 days after being treated.

研究NaCl处理对骆驼蓬属植物幼苗生物量、植株中主要无机离子和有机溶质的含量及渗透调节能力的影响。

The Pn of Phragmites communis is higher than that of Phalaris arundinacea L, meanwhile Phragmites communis has the higher diurnal photosynthetic capacity, which shows that the Phragmites communis could grow more rapidly, and have higher biomass, so the Phragmites communis could be one of the priority implemental plant.

芦苇的Pn比虉草的Pn高，同时芦苇较虉草有更大的日光合量，说明芦苇相比较长势更快，生物量更高，当年栽植当年见效，在湿地生态系统人工修复中可作为优选工具植物之一。

For biogenic VOC modeling, emission factors, vegetation biomass and leaf area index were determined for 37 vegetation types. The widely accepted algorithm of Guenther et al.(1993), describing the relationship between light, temperature and the VOC emissions, was adopted. A new canopy model was established to simulate photosynthetically active radiation and leaf temperature within the canopy.

对于VOC生态源模式，确定了37种植被的VOC排放因子、生物量和叶面积指数；采用了相对成熟的关于VOC排放强度和光合有效辐射、叶面温度的依赖关系；建立了一个新的植被冠层模式以模拟冠层内PAR和叶面温度的变化。

Community structure of planktonic crustacean in the Xiqi river,Hangzhou including species composition,population dynamics and biomass,was studied .

本文研究了杭州西溪河浮游甲壳动物的种类组成、种群动态、生物量及其与环境因子的关系。

In this research, the optimum submerged culture medium and fermentation conditions of exopolysaccharides produced by Pleurotus nebrodensis were obtained.

摘 要：以菌丝体生物量及发酵液中胞外多糖（exopolysaccharides， EPS）含量为指标对白灵菇产胞外多糖的液体培养基组成和发酵条件进行了优化。

By high density sampling and farming household investigation,total N content,microbial biomass N content,total N and MB-N relationship,and N cycle characteristics and N balance of plowable soil layer under different land-use types were studied in Dongting Lake region.

通过对洞庭湖典型地区的密集采样分析和农户调查，研究了4种利用方式耕作土壤全N、微生物生物量氮含量、两者关系和N素循环特征。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。