生物量

A pot experiment was carried out to study effects of Cu stress on growth of Alternanthera philoxeroides, content of chlorophyll, biomass of the plant, and activity of four species of soil enzymes (Invertase, Catalase, Urease and Phosphatase).

通过盆栽实验，研究了不同浓度铜胁迫对外来杂草水花生植株生长、叶绿素含量、生物量及土壤酶活性的影响。

With field pot experiment, the effects of two dosages of enhanced UV-B radiation on the morphology, physiology, biomass allocation, and chemical composition of C4 plant Amaranthus retroflexus were studied.

通过大田盆栽实验，研究了2种增强的UV-B辐射对双子叶C4植物反枝苋形态、生理、生物量分配及化学成分的影响。

The relationship between soil microbial biomass and soil organic C and respiration in three different agroforestry models, namely rubber tree + Amomum villosum, rubber tree + Coffea arabica and pure rubber plantation was investigated.

探讨了橡胶与砂仁、橡胶与咖啡间种和纯橡胶林3种栽培模式下的土壤微生物生物量及其与土壤有机碳和土壤微生物呼吸强度的关系。

The amylolytic tests showed that when this transformant was incubated on plate of YPDS medium containing 1% glucose and 1% starch at 30℃for 48 hrs zones of starch degradation could be visualized by stained with iodine vapour.

该转化子在YPDS平板30℃培养48小时形成清晰可见的水解淀粉圈。48hrs发酵液可获得0.74-0.78u/ml产酶活力及高的生物量。

Moreover, the release of CO2 from a heap of fermentation in present unit could last nearly 3 weeks. Consequently, the vegetable yields for all vegetable species including celery Apium graveolens L.

该农业有机废弃物发酵CO2施肥技术，可使大棚内的芹菜、生菜、莴苣、油麦菜和青菜等5蔬菜可食部分的生物量分别提高260%、135%、115%、140%和322%。

Results showed that the root colonization rate of S. gracilis (62.2%) was higher than that of A. conyzoides (36.5%) and P.notatum (37.3%).The arbuscule percentage showed a similar pattern. Although the biomass and P content in the shoots of the three grass species were comparable, P content in S. gracilis roots was higher than that in A. conyzoides and P. notatum roots. The species richness and hyphal density in the rhizosphere soil of S. gracilis plants were less than those of A. conyzoides and P. notatum plants, while the spore density was highest for A. conyzoides and lowest for P. notatum. Diversity index of the native AM fungi in the rhizosphere soil of P. notatum plants was slightly higher than those of S. gracilis and A. conyzoides plants. PCRDGGE analysis was consistent with the morphological results.

结果表明，柱花草根系的侵染率(62.2%)显著高于百喜草(36.5%)和藿香蓟(37.3%)，丛枝率有相似的趋势；3种草地上部的生物量和含磷量没有差异，但是柱花草根系含磷量显著高于百喜草和藿香蓟；柱花草根际土壤中AM真菌的菌种丰度和菌丝密度均小于百喜草和藿香蓟，但是孢子密度大于藿香蓟而小于百喜草；藿香蓟根际土著AM真菌群落的多样性指数略高于柱花草和百喜草；PCR-DGGE分析结果与之吻合。

Aerobic granular sludge is a recently-discovered kind of sludge self-immobilized through autogenetic microbial activities under aerobic conditions. This kind of sludge demonstrates high settling capability, high biomass and high bio-activity that decomposes organic wastewater high in concentration.

好氧颗粒污泥是近年发现的，在好氧条件下自发形成的微生物细胞之间自身固定化的一种形式，具有良好的沉降性能、较高的生物量和在高容积负荷条件下降解高浓度有机废水的良好生物活性。

The average biomass was 45.261. The maximum biomass of 113.138 occurred in Zhainan lake region and the minimum biomass of 0.862 in the Zaozhadian lake region. The average chlorophyll content was 7.573 3. The maximum chlorophyll content of 17.690 4 occurred in Nanliuzhuang lake region and the minimum chlorophyll content of 0.245 7 in the Zaozhadian lake region. The avera...

各淀区浮游植物生物量平均为45.261，以寨南最大（113.138），藻淀最小（0.862）；叶绿素含量平均为7.573 3，其中南刘庄最大（17.690 4），藻淀最小（0.245 7）；最高生产层以碳计的日产量（g／（m3 ·d））平均为0.285，其中南刘庄最大（1.055），藻淀最小（0.015），水柱日产量（g／（m2 ·d））平均为0.431，其中寨南最大（1.001），藻淀最小（0.013）。

Compared to CK, the rice-fish ecological system increased its density and biomass, decreased the predominance of Bacillariophyta and Cyanophyta, and increased the diversity index.

稻鱼共作显著增加稻田水体浮游植物的密度和生物量，降低硅藻和蓝藻的优势度，增加绿藻和裸藻的优势度，提高了稻田水体浮游植物多样性指数。

Based on the study for backwashing technology, the most optimal backwashing strategy was established, on the base of which to compare the effective rule of backwashing on both of BAC filters.

通过研究不同反冲洗方式、冲洗强度对炭池生物量、净水效能等多项指标的影响确定了炭池的最佳反冲洗模式，在此基础上进一步分析比较了反冲洗对两生物活性炭滤池的影响规律。

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。