生物量

The results show that the habitats is a distinct effect on the morphological factors and the biomass of Spartina alterniflora Among the three habitats, the individual number and biomass of the species in clay habitat are the highest.

该文以分布于广西合浦山口红树林保护区的互花米草为研究对象，研究了不同的生境条件对其形态因子和生物量的影响。

Hydroponical experiment was carried out to study the effects of different nitrogen levels 5, 10, 15, 20mmolL^(-1 on biomass, nitrate and soluble sugar contents in different parts in spinach ("Spinacia oleracea").

通过水培试验研究了不同氮素水平（5、10、15和20mmolL^(-1)）对4个菠菜品种生物量以及植株不同部位硝酸盐、可溶性糖含量的影响。

The results showed that soil microbial numbers and biomass in Leymus chinensis and Stipa grandis grassland were higher than those were in degenerative Artemisia frigida and sandy rare-tree grassland significantly.

典型草原不同生态分布类型的土壤微生物量大小有显著不同，土壤微生物的数量与生物量的分布规律基本一致，且与土壤有机质的分布相关联。

Objective: To study the effect of different single C-sources, N-sources and C/N ratio on the submerged-culture of Stropharia rugoso-annulata Methods: Single factor and orthogonal testing method were employed for this study.

目的：以菌丝生物量为指标，探讨不同碳氮源及碳氮比对大球盖菇液体发酵的影响。方法：单因子试验和正交试验。

To compare the difference of drain and intake water then converse with biomass in sweetfish and walking catfish's grow-up pond. The ammonia-N, nitrate-N, nitrite-N and phosphate were 383.7, 208.99, 21.62 and 119.03 mg/kg in sweetfish's pond, respectively.

水中营养盐部分香鱼与胡鲇池换算流水量与生物量后，香鱼每增长1 kg，它所产生之氨氮、硝酸氮、亚硝酸氮及正磷酸酸盐的量分别为383.7、208.99、21.62和119.03 mg；胡鲇每增长1 kg则分别为68.76、5.72、2.44及13.80 mg。

The total abundance of the phytoplankton ranged from 4.925×106 to 63.65×106 cells L-1and the total biomass from 1.632 to 20.420 mg L-1. Pseudanabaena sp. and Synedra ulna were dominant species in the community during January to March.

共检测到浮游植物76种；浮游植物总的细胞数量在4.925×106-63.65×106cells L-1之间，浮游植物的总生物量在1.632-20.420 mg L-1之间。

3Started with the ecosystem structure and function, constructed the index system of grassland ecosystem health evaluation. And selected eight quantitative and two qualitative indices, including the production, community coverage, litter biomass, excellent forage proportion, forage crude protein, soil compaction, soil organic matter, soil microbial biomass nitrogen and dominance species and life form synusia composition, as the sensitive indices of typical steppe health evaluation.

3从生态系统结构与功能入手，构建出典型草原健康评价的指标体系，并进一步筛选出典型草原健康评价的敏感指标包括草地产草量、群落盖度、地表凋落物、优良牧草比例、牧草粗蛋白、土壤紧实度、土壤有机质、土壤微生物量氮8项定量指标以及优势物种组成和生活型层片构成2项定性指标作为典型草原健康评价指标。

E. , Pinus koraiensis, Quercus mongolica and Tilia will appear as new species. Fire disturbance has effects on forest biomass and its species composition and structure.

koraiensis、蒙古栎、椴树等树种；火干扰影响森林生物量及森林的物种组成和结构。

The effect of compound fertilize on the trampling resistance of Shanghai JD-1 Zoysia was tested through simulative tramper. The results showed that both aboveground phytomass and green grass rate were increased along with the application amount of compound fertilizer with or without the trampling stress.

通过践踏器模拟践踏，研究氮、磷、钾复合肥对践踏胁迫下上海&JD-1结缕草&草坪耐践踏性的影响，结果表明：非践踏区和践踏区内，结缕草Zoysia japonica的地上生物量和绿叶率随着复合肥用量的增加而增加。

Seedlings of Trapa pseudoincisan, a typical floating-leaved macrophyte accumulated more biomass after exposing 30 days in high CO,, and the biomass advantage was due to dry weight increase in root, stem, leaf and petiole.

高co：浓度中生长30天的菱幼苗总生物量明显增加，这是根、茎、叶和叶柄干重均增加的结果。

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。