查询词典 biomass

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。

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。

Vegetation ecotype tend to be xerophyte and even hyper-xerophyte and finally replaced by annual plant. Community structure and species diversity also decrease as the ecological environment worsen, In this process, the height, coverage and biomass decreases by 56.6%、 80.8% and 74.2% respectively compared to steppe, and the indices of species richness, diversity and evenness decrease by 76.4%、 56.7% and 32.0%, but β diversity indices increase by 14.6 times, especially the decease of species gregariousness and the breadth and overlay of species Niche shows that grassland tend to be more sandy and vegetation retrogression succession take place.

其中，植被生态型逐渐由中旱生向旱生、超旱生过渡，并最终被一年生植被替代；群落结构及多样性呈明显递减规律，到严重沙化阶段，草群高度、盖度、生物量与典型草原相比，下降幅度分别达到56.6%、80.8%和74.2%；物种丰富度、多样性及均匀性分别降低76.4%、56.7%和32.0%；而群落β多样性增长14.6倍，特别是多年生物种群聚度降低和生态位宽度、生态位重叠值的下降，表明草地沙化，植被发生逆行演替。

An Aspergillus sp. strain F3 was isolated and identified from the rhizosphere soil of mangrove plant, Rhizophora stylosa Griff in Dongzhai harbor mangrove forest conservation in China. In this study, the effects of media salinity and pH on the mycelial biomass and the ability of producing antibacterial metabolites from this isolate were carefully analyzed.

本研究考察了一株从中国海南东寨港红树林保护区的红海榄根际土壤中分离得到的曲霉属真菌F3在不同盐度和pH的SDA培养基中的生长和分泌抗菌活性代谢产物的变化。

The b value in the function expressed growth rate of biomass and width of leaf.

方程中的b值表示叶生物量或叶宽的增加速率。

Hame T A new methodology for the estimation of biomass of conifer dominated boreal forest using NOAA AVHRR data International Journal of Remote Sensing , 1997,15

戴小华%余世孝遥感技术支持下的植被生产力与生物量研究进展 10.3321/j.issn：1000-4890.2004.04.020 生态学杂志， 2004，04

The results showed that most intercrops had no significant effects on the growth of maize, only with purple haricot reduced the maize biomass by 32.2% of the control.

结果表明，多数间作作物对玉米生物量没有明显影响，只有扁豆对玉米生长有较明显的抑制作用，使玉米生物量降至对照的67.8%。

The biomass compound coal composed of anthracite coal,corn haulm and loess was taken as the object of study.

以无烟煤、玉米秸秆和黄土为原料，研究了玉米秸秆含量为5%~35%的生物质型煤在不同试验条件下的燃烧特性。

The content of the dissertation includes comminuting the ordinary biomass, such as, the phoenix tree branches, leaves and straw haulm, into powder size, and burning in the firebox by air.

本文研究的内容是将普遍的生物质(包括梧桐树枝、树叶和秸秆等)破碎成粉体，利用空气将其鼓入燃烧炉中燃烧。

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。