生物量

So. we conducted this study on seedling recruitment process and growth performance of some familiar forbs component species under different microsites (light and nutrient availability), which were made by a simulative artificially method, in alpine meadow communities of the eastern Qinghai-Tibetan Plateau.

因此，我们利用人工模拟的方法，研究了青藏高原东部高寒草甸群落中常见的杂类草组分种在不同微生境下的幼苗更新(从种子萌发到幼苗出土、存活至越冬)过程和生长(生长率、生物量积累和分配)特征。

The ecologicalcharacteristics of community structure, species diversity, its ecological effects on soil health,and eco-system functions of soil water holding capacities, water and soil conservation effectswere studied symmatically in Nverzhai watershed , which was the key experiment anddemonstration spot of the Yangtze River Proctction Fores.

针对长江中下游低山丘陵区土地退化现状和我国现阶段生态工程建设需求，以湘西北武陵山区女儿寨小流域为研究对象，研究了7种典型植被恢复模式的群落结构、生物量分配格局、物种多样性、土壤健康效应等生态学特征及水土保持、水源涵养等生态系统服务功能，具有重要的理论意义和应用价值。

Compared at national average level, the mean biomass of almost all kinds of communities in Jiuzhaigou Valley is higher except that of oak forest.

与全国平均水平相比，九寨沟几乎所有类型的群落的平均生物量都要高于全国同类群落的平均水平。

However, effects could be observed in the interactions between N and forest type, and the interactions between N and sampling date.

然而通过氮处理与取样期和林分的交互作用，土壤动物类群生物量对氮沉降有一定的响应趋势。

There were a great deal of kinds of the grass with high quality and quantity fed to fish To determine the best symbiosis ecosystem of fish and grass on a closed system circulated yearly, several cold and warm grass was selected to analyse the adaptability and nutrition absorbed. It indicted that Lolium multiform Lam. and lemarthria compressa were the best option due to high adaptability of wetness, high coarse protein, fat and fibre and so on in the leaf, high biomass, high bio-filtration effect of N and P, adaption to the low or high temperature, resist to the plant diseases and insect pests, and the food of fish whose forage was grass.

鱼用优质高产牧草的种类繁多，为确定最佳的鱼草共生周年循环系统，本文选择几种冷季牧草和暖季牧草进行生长适应性与营养吸收研究，分析表明，多花黑麦草和扁穗牛鞭草是最佳的冷季牧草和暖季牧草，它们耐水性强，叶片中所含的粗蛋白、粗脂肪、粗纤维等化学成分高，植株的生物量也高，生物过滤养殖废水中的氮和磷效果好，而且可以适应外界环境的低温或高温，抵抗病虫侵害，同时为草食性鱼类喜欢食用。

The aboveground biomass and absolute growth rate of aboveground biomass of shrub, half-shrub are higher than herbal grasses.

灌木、半灌木的地上生物量以及地上绝对生长率均高于禾本科杂草。

In the 37 herbaceous species identified, only 18, 25, 20, 25 and l7species were present in the PS, PA, PD, HR and CK forests, respectively. For herbages, Stipa bungeana, Arthraxon hispidus, Potentilla multifida and Thymus mongolicus were common in the five plantations. The average coverage, height and biomass of herbages in five artificial forests were different obviously, but community biodiversity was similar.

结果表明：5种人工乔灌林下共有37种草本植物，各人工林林下物种组成数量在17~25之间变化，其中以杏树林最多；5种人工林下草本层平均盖度、平均高度、平均生物量存在较大差异，但多样性指数相差不显著。

Different herbicides showed different degree of influence on soil microbial biomass C.

相同除草剂在不同土壤中对土壤微生物生物量氮的影响程度是不同的。

It focuses on the methods with which the grazing pressure of microzooplankton on phytoplankton and primary production, the top-down and down-top effect caused by the herbivory of microzooplankton, and the main factors that influenced its herbivory.

文章总结了近年来关于微型浮游动物丰度和生物量及摄食生态学方面的研究进展，主要包括微型浮游动物摄食的研究方法、上下行效应、影响其摄食的主要因子。

In the community of pack ice with high biomass, the grazing rates of micro-fauna to algae ranged from 0.09 to 0.21 day-1, which corresponded to remove 8 to 23% of algal preliminary biomass or 58 to 123% of primary production, suggesting that the herbivory was one of the most important passways of carbon flow within the micro-community.

浮冰生物群落中，小型动物区系对藻类的摄食速率为0.09 和0.21 day-1之间，相当于每天摄食8-23 %的藻类初始生物量和58-123 %的产量。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。