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However TGase activity did not change significantly by increasing Zn2+ initial concentration.TGase activity did not change significantly when the fermentation culture was dialysed with EDTA addition. according to the change of biomass at different Zn2+ initial concentrations, the author considered that Zn2+ was not the component or active centre of TGase.

EDTA透析对TGase的酶活没有产生明显影响，结合不同Zn2+含量时SK4.001生物量的变化，作者认为，Zn2+在SK4.001发酵产TGase中同时具有营养和促进SK4.001产TGase的作用，但Zn2+并不是TGase的构成部分或活性中心，有关Zn2+促进SK4.001产TGase中的具体作用机理仍有待进一步研究。

Primary research involves classification of ecosystem types and basic evaluation units; development of a map of ecotypes; measurement of biomass, productivity and crosion and analysis of the pattern of space structures in landscape units.

主要研究内容包括：生态系统类型及评价单元的划分；生态类型图的编制；生物量生产力和水土流失状况的测定；以及景观单元的空间结构格局分析等。

The height and aboveground biomass of vegetation are not significant related tothe methane effluxes from littoral zone of Huahu Lake, Zoige Plateau.

植被高度以及植被地上生物量与若尔盖高原花湖湖滨带甲烷排放速率的相关性不显著。

Objective:To study influence of fungal elicitors on the biomass and ginseng saponin biosynthesis of hairy roots of Panax ginseng.

中文摘要：目的：考察真菌诱导子对人参毛状根的生长和人参皂苷生物合成影响。

With the Sand culture method, influences of different magnesium levels (0%、50%、100%、150%、200% and 300%) was explored to the wheat seedlings of different stages. Many targets such as plant height, root length, biomass, content of chlorophyll, activity of root, RGY, RGR and ratio of root to crown of the wheat were mensurated at the time of 7d, 15d and 30d of two leaves stage of wheat seedlings after their endosperms were removed at different magnesium levels.The results showed that different magnesium levels had unlike influences over the wheat seedlings.

以小麦为试材，采用砂基培养的方法，在镁浓度分别为对照组的0%、50%、100%、150%、200%和300%的营养基质上，培养剔除胚乳后的二叶期小麦幼苗7d、15d及30d，并分别测定该3个时间段小麦幼苗的株高、根长、地上部和地下部的生物量、叶绿素含量、根系活力以及相对生长速度、相对生长速率和根冠比等指标，研究不同供镁水平对不同时期小麦幼苗生长速率的影响。

The main aim of the present study was to address: 1 the photosynthetic characteristics and the biomass allocation traits of spring ephemerals and 2 the relationship between these traits and unique growth pattern of thes.

准噶尔荒漠分布的早春短命植物不仅具有十分独特的生物学特点，而且在荒漠植物群落演替、物种多样性维持及土壤改良与防治水土流失等方面具有重要的生态学价值。

Herbivory and the interaction with epiphytes are the most important biotic factors affecting the biomass and production of seagrasses.

非生物因素一般有最适合海草生长的范围，生物因素的影响具有两面性。

The diversity of epiphytes, biomass and ecosystem-level function have received more attention in the world. In the present paper, the main investigating methods of canopy research are summarized. Meanwhile, based on our own observations, the application advantage and disadvantage of each method, and newly progress in this field were discussed.

文中以附生植物多样性、生物量和附生植物群落的生态功能等为基础，结合作者已开展的工作，综述了林冠附生植物的观测调查及取样方法，并且分析了不同方法的特点及在林冠研究中的应用，对进一步深入研究附生植物提出了一些建议。

Biodiversity and biomass of epiphytes and their functional roles at the ecosystem-level are becoming a hot topic of recent study.

有关林冠附生植物多样性、生物量及其生态学效应已成为近年来国际上新兴研究领域―&林冠学&的研究热点之一。

Changes of Plant Diversity, Biomass, and Soil Nutrients in Cutting Slash of Artificial sand-fixation Forest after Fallowing and Natural Restoration

固沙林采伐迹地撂荒后自然恢复的植物多样性、生物量与土壤养分含量的变化，吴祥云；卢慧；王晓娇-66文免费论文库，大学生论文库

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。