查询词典 biomass

Result］ The results showed that appropriate shade at a certain period was advantage to the plant high growth of Eupatorium odoratum, but not to its biomass accumulation.

结果］适宜的遮阴处理在一定的时间内有助于飞机草株高的增长，但不利于其生物量的积累。

Eupatorium adenophorum is one of main invasive plants in China and has caused great economic losses. A study was conducted to determine the biomass allocation, leaf morphology and growth response of E.

紫茎泽兰是我国主要外来入侵植物之一，在我国西南地区迅速传播，引起了巨大的经济损失。

Results showed that:(1)In heavy eutrophic water, improving plant biomass could increase the removal rates of N and P.

当前 ，建立长期稳定的水质净化系统，保护水资源，改善生活环境，已成为城乡发展的重要问题。

And soil porosity, nutrient, microbe quantity, microbial biomass and enzyme activity showed the trend of rise along with the increase of exclosure period, and after exclosed for 12 year, the quality of the soil reached to the best.

且随围封年限的延长，土壤孔隙度、土壤养分、微生物数量、微生物生物量及酶活性呈增加的变化趋势，围封12年土壤质量最好。

The 10 a plot had the highest community average height, abundance, and above ground biomass, but the community average increased with enclosure time and the 25 a plot had the highest community average coverage. Enclosure for 10 a gave the highest species diversity index in the third plots, while 15 a had the highest' richness index and lowest evenness index. The highest evenness index was in the non-enclosure plot. Exclosure appears to maintain or conserve, rather than increase plant diversity in contrast to non-enclosure.

结果表明，围封10年样地群落的高度、多度以及地上生物量最大，而群落的盖度则随封育年限的增加呈显著增加趋势，在封育25年达到最大；围栏封育的不同年限也显著影响了群落的物种多样性，在围封10年样地群落具有最高的多样性指数，围封15年样地具有最高的丰富度指数，而均匀度指数则是在未封育群落中表现为最高值，最低值是在物种丰富度最高时出现。

The dynamic changes in community height, coverage, abundance, above ground biomass and plant diversity in Stipa bungeana typical steppe was investigated by a quadrat method. There were six treatments: Unexclosure, 5-year old exclosure (5 a), 10-year old exclosure (10 a), 15-year old exclosure (15 a), 20-year old exclosure (20 a), and 25-year old exclosure (25 a) plots.

采用样方法对云雾山干草原区本氏针茅草地群落进行长期定位监测，对未封育样地和封育5，10，15，20和25年样地群落的平均高度、盖度、多度和地上生物量以及植物多样性进行实地调查分析，以研究围栏封育对草地植物群落特征动态变化的影响。

2After the utilization of seasonal exclosure, the proportion of coarse sand (2.00～0.25 mm) dropped significantly, and the proportion of fine sand (0.25～0.05mm) and silt and clay (.05mm) increased significantly, soil bulk density and compaction dropped, soil porosity, nutrient and microbe quantity increased, soil microbial biomass and enzyme activity enhanced in the layer of 0～10cm and 10～20cm.

2放牧草地采用生长季围封恢复措施后，土壤0～10cm、10～20cm土层中粗沙(2.00～0.25 mm)含量显著降低，细沙(0.25～0.05mm)和粉粘粒(。05mm)含量显著增加，土壤容重和紧实度降低，土壤孔隙度、养分含量、微生物数量、微生物生物量碳、氮含量增加，土壤酶活性增强。

In secondary forest, Acacia auriculaeformis and Pinus massoniana communities gaps, the biomass of the two exotics were higher than that of the native.

在林窗中，大叶相思和尾叶桉两种幼苗比荷木幼苗生长快，而且前两者的生物量都大于后者。

But the raw material based on sugar and fecula couldn 't meet the great demand of bioethanol production,growing attention has been devoted to bioethanol preparation from lignocellulosic biomass,the richest biology resource in the world.

但基于糖和淀粉类原料不能满足生物乙醇生产的巨大需求，各国研究者们越来越关注地球上最丰富的生物资源：木质纤维素类生物质。

Based on a long-term experiment, the soil organic carbon, readily oxidizable carbon and microbial biomass carbon of two sequence rotation systems with spring wheat and field pea in soil layer under different tillage patterns were studied.

以长期定位试验为基础，对麦－豆轮作次序下不同耕作措施间的土壤有机碳、易氧化碳以及微生物生物量碳进行了测定，计算了土壤微生物商在各个序列中变化并对土壤各级有机碳库进行了相关分析。

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。