生物量

SPSS was used for principal component analysis and factor analysis of quantity and biomass of six phyla of phytoplankton and four species of zooplankton of five lakes.

利用SPSS软件，对5个湖泊浮游植物6个门和浮游动物4个类的数量和生物量进行了主成分分析和因子分析。

Effect of N, P concentration on growth rate and biomass of phytoplankton in eutrophical water .

富营养化水体中N， P浓度对浮游植物生长繁殖速率和生物量的影响。

Biomass and the community structure of phytoplankton are important characters of the water eutrophication.

浮游植物生物量及群落结构的变化是水体富营养程度的重要表征。

The biomass of phytoplankton is the best in summer and fewest in winter.

生物量的季节变化总体趋势为夏季最高，冬季最低。

And 14. 02% of the standing crop. These results were coincide with size-structure of phytoplankton.

这一类群结构与生物量的粒级结构相吻合。

In order to control phytoplankton biomass while managing a lake, density of tilapia should be effectively controlled.

从控制浮游植物生物量的角度看，湖泊等水体的管理应该对罗非鱼密度加以有效控制。

Our simulation results demonstrated that the Acacia mangium planation grew fast at the first 12 years.

模拟结果还显示马占相思林前期生长迅速，但随后生长缓慢，叶生物量还出现负增长现象。

Therefore, the root should have corresponding plasticity in morphology, growth and biomass investment patterns.

因此，当地分布的植物的根系则应该具有相应的形态、长和生物量投资方面的可塑性。

The results show that the tiller number, biomass accumulation, contents of soluble sugar and proline, and activity of SOD isozyme of E+ plants were significantly higher (P.05), but malondialdehyde content significantly lower (P.05), than those of F- plants. In conclusion, endophyte infection improved the salt tolerance of wild barley under outside pot conditions.

结果表明：在高盐浓度300 mmol L^(-1下内生真菌显著提高了宿主野大麦分蘖能力、生物量积累、可溶性糖含量、脯氨酸含量、SOD酶活性(P.05)，同时降低了丙二醛含量，说明内生真菌的侵入有利于提高宿主野大麦在室外盆栽条件下的耐盐性。

The results show that the tiller number, biomass accumulation, contents of soluble sugar and proline, and activity of SOD isozyme of E+ plants were significantly higher (P.05), but malondialdehyde content significantly lower (P.05), than those of E-plants. In conclusion, endophyte infection improved the salt tolerance of wild barley under outside pot conditions.

结果表明：在高盐浓度300 mmol L^(-1下内生真菌显著提高了宿主野大麦分蘖能力、生物量积累、可溶性糖含量、脯氨酸含量、SOD酶活性(P.05)，同时降低了丙二醛含量，说明内生真菌的侵入有利于提高宿主野大麦在室外盆栽条件下的耐盐性。

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。