生物量

Photo Gallery: Tropical Rain Forest Wildlife Some studies estimate that ants make up an amazing 30 percent of the total biomass of Earth's tropical rain forests, far exceeding that of mammals.

意译：热带雨林野生动植物图片集。一些研究表明估计蚂蚁群体超过30％惊人的总生物量在地球的热带雨林，远远的超过哺乳动物。

From the point of view of geobotany, with the method of correlative factors of growth of plants, a countrywide theoretic ecological division was done for the introduction of Camptotheca acuminata and three kinds of areas of ecological preferent zone, ecological adaptive zone and ecological unadaptable zone were divided. With the theory of synecology, the characteristic on environment, constitution, life form spectrum, diversity, similarity of plots of communities were researched. Applying the method of species association, discrete distribution, indensity index, fractal geometry, etc. to research relations between the species of the communities, space distribution of Camptotheca acuminata, structure of age of Camptotheca acuminata, in different communities. Using the theories of autoecology, distibutons of seeds on land and growth of seedlings in vertical and horizontal directions, biomass of organ of Camptotheca acuminata were analyzed. On the opinions of conservation biology, the external and internal factors impressing Camptotheca acuminata were analyzed to research the mechanism of the endangered species, and with using of CTM Model, the future development direction of Camptotheca acuminata in different communities were forecasted, and. Standing on the position of resources ecology, discussing the regularity of camptothein in Camptotheca acuminata of different sites and seeding of different resources, also the the derive technics of camptothecin.

本文从地植物学的角度，运用植物生长相关因子法，对我国喜树资源的生态适宜区进行了划分，理论上确定了我国的喜树的引种栽培的最适生活区域、生态适宜区域和不适宜生活区域；从群落生态学的角度，对野生喜树所在的典型群落的群落环境、群落组成、群落生活型谱、群落的物种多样性特点、群落样地间相似性进行了研究；从种群生态学的角度，运用种间联结性、离散分布模型、聚集强度指数、分析几何等分析手段，对野生喜树所在典型群落间的种间关系、喜树的空间分布格局、年龄结构等进行了分析；从个体生态学的角度，对不同年龄组的喜树的种子的散落的垂直分布、水平分布、时间分布及种子发芽率和千里重等特点、不同种源的人工喜树苗期特点、喜树的高生长和茎生长特点、喜树的器官生物量特点进行了研究；从保护生物学的角度，对野生喜树的濒危的内部因素和外部因素进行了探讨，并运用CTM模型对不同群落中野生喜树的种群趋势进行了预测；从资源生态学的角度，对我国地理环境下喜树中喜树碱含量的地理分布规律、不同种源的喜树幼苗中喜树碱含量变化规律进行了研究，并对喜树碱的提取工艺进行了探讨。

Addition of gibberellin at 1mg/L and 2mg/L enhanced cell biomass.

添加1mg／L和2mg／L的赤霉素可以提高细胞的生物量，矮壮素对细胞的生长具有抑制作用。

When the strain grew in the medium containing glucose(40 g/L) as carbon source with tomato juice(3.6 mL/L), gingili oil(1.6 mL/L), Na2CO3(6 g/L)and phosphate buffer, at 28 ℃ with illumination for 120 h, its cell biomass, and carotenoid yield and content could reach 65.57 mg wet cell per mL medium, 9.896 μg per mL medium and 150.9 μg per gram wet cell, respectively.

菌株在以葡萄糖为碳源，添加番茄汁（3.6 mL /L）、芝麻油（1.6 mL/L）、Na2CO3（6 g/L）和磷酸缓冲盐的液体培养基中28 ℃振荡培养5 d，每mL培养液细胞生物量湿重达到65.57 mg，类胡萝卜素产量达到9.896 μg，菌体每g湿重细胞胡萝卜素含量为150.9 μg。

Following girdling and HWA infestation, very fine root biomass declined by 20–40% in 2 years, which suggests hemlock root mortality in the girdling treatment, and a reduction in hemlock root production in the HWA treatment.

围绕和偶遇之后，非常细根生物量下降20%~ 40%，这表明在2年的死亡率的根叶围绕的处理，并减少生产中的铁根单治疗。

Soil CO2 efflux declined by approximately 20% in 1 year after both girdling and HWA infestation, even after accounting for the intra-annual variability of soil temperature and moisture.

土壤CO2射流下降了大约20%在一年之后，即使是围绕和华出没的变化后的土壤温度、奎屯河水分。在土壤和减少并发下跌，白，站得细根生物量建议迅速下跌，从叶。

To understand the impact of plant canopy photosynthate inputs on soil nematode communities, a large-scale tree girdling experiment was conducted in a evergreen broad-leaved forest of Ailao Mountains.

3为了解植物光合产物通过根系实现的地下资源输入对土壤生物的影响，本研究通过大规模的环割实验切断植物向地下运输光合作用产物的通道，研究了环割前后土壤微生物生物量、土壤线虫密度和多样性的变化。

The effect of long-time irrigation of petroleum wastewater on glebe microbial biomass and soil enzyme activities in Shenfu irrigation area was studied.

以土壤微生物生物量和土壤酶活性等为土壤微生物变化指标，研究了含油污水长期灌溉对东北沈抚灌区农田土壤微生物的影响。

Generally, in grazer systems, that part of the trophic structure of a community which depends on the consumption of living plant biomass, secondary productivity is an order of magnitude less than primary production resulting in a pyramidal structure.

一般说来，在牧食者系统中，次级生产力是群落营养结构中，依存于消费活植物生物量的那一部分，在数量级少于植物生产力，从而形成了金字塔结构。

Greengrocery、carrot and wheat were cultivated on the soil taken from the DaShaHe orchard jiangsu Province to evaluate the effect by copper contamination in soils on growth of crops were evaluated.

果园铜污染土壤种植小青菜、胡萝卜和小麦的研究表明：种植在果园铜污染土壤中的小青菜、胡萝卜和小麦生长明显受抑制，生物量减少、产量降低。

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。