查询词典 biomass

The results indicate seawater concentration has no effect on absorbency, pH, relative density, dry matter and water contents in Aloe vera leaves. While, seawater stress causes increased MDA and membrane penetration, decreased phytochroms, prolines and NO_3~--N. It is beneficial to plant growth when irrigation was done with 10% seawater, because of higher ratio of K~+/Na~+ and lower ratio of Na~+/Ca~(2+). In addition, the polysaccharide contents in Aloe vera leaves increase twice and triplication under 25% and 50% seawater irrigation respectively, the barbaloin contents increase over triplication in var. 75% seawater and over twice in var. 50% seawater and var. 100% seawater. However, when seawater concentration exceeds 25% the growth of plant was inhibited, biomass decreased, flowering time was deferred, Ca~(2+) content decreased caused by Na~+ accumulation in leaves.

结果表明：在海水胁迫下，库拉索芦荟全叶汁的吸光度、酸度、相对密度、总固形物和水分含量总体上受海水浓度的影响不大；但芦荟叶的丙二醛含量和质膜透性增加，叶绿体色素、脯氨酸和硝态氮含量减少；在10％海水浇灌下，芦荟叶细胞具有较高的K~+／Na~+比和较低的Na~+／Ca~(2+)比，对库拉索芦荟的生长有一定的促进作用；在25％海水和50％海水浇灌下，芦荟多糖含量提高了2-3倍；在75％海水浇灌下芦荟甙含量增加了3倍多，在50％海水和100％海水灌溉下，其含量也增加了2倍多；当海水浇灌浓度超过25％后，库拉索芦荟的生长明显受到抑制，生物量降低，抽苔期推迟，同时，海水浓度的增加也导致芦荟叶中累积大量Na~+，从而使得芦荟叶中Ca~(2+)含量降低，但Mg~(2+)并没有受到海水浓度的影响；用浓度低于75％的海水浇灌库拉索芦荟可以降低剖面深度在0-100cm之间的土壤盐度；其抗氧化保护酶中超氧化歧化酶的酶活力相对保持稳定，过氧化物酶的酶活力在10％海水浇灌下明显提高，随后则下降，而过氧化氢酶的酶活力则随海水浓度的升高而下降。

The percentage of usable chemical energy transferred as biomass from one trophic level to the next is called ecological efficiency .

可用的百分比化学能量转移的生物质从一个营养级的下一个被称为生态效益。

Each trophic level in a food chain or web contains a certain amount of biomass,the dry weight of all organic matter contained in its organisms.

每个营养级的食物链或网页含有一定量的生物量，干重的所有有机物质在其生物体。

It could influence significantly not only photosynthetic rate and transpirational rate, but also stem diameter, umbel diameter, internode length and biomass.

叶面喷施不同浓度的KH_2PO_4，不仅对种株光合速率、蒸腾速率影响显著，而且对植株的茎粗、节间、花盘直径及生物产量产生了显著影响。

Beyond this resident time limit, NO removal efficiency increase slowly. In the tested conditions, biomass was more efficient than pulverized bituminous coal for NO removal efficiency and unburnt carbon in fly ash was within reasonable limits.

生物质与煤粉相比，在相同反应条件下能获得更高的脱硝效果，同时其不完全燃烧损失保持在合理的范围内。

It was explained that, the variation of microbial biomass revealed by DNA extracted directly from tailings and the enumeration of solid plates suggested that the layer of 25-30cm had more uncultivable microbes than the layer of 5-10cm.

在同一矿渣堆中，25-30cm层比5-10cm层有较高的微生物DNA含量，但平板分离技术则显示样品5-10cm层的可培养微生物多。

The growth and biomass of understory plants in different site indexes and forest age existobvious difference.

不同地位指数不同林龄杉木林下植物生长和生物量存在明显差异。

The results showed that vegetation coverage and biomass of enclosed desert grassland increased by 272%～536% and 44\^39%～305\^5% respectively compared to those of unenclosed desert grassland under the similar environments.

植被的恢复使土壤理化性质发生了变化，与封育前相比土壤中有机质、全N、速效K以及细砂、特别细砂和粘粒含量显著增加；速效N、速效P降低。

For year round unfenced grazing land,the total above ground biomass,overall vegetation coverage,and average plant height were all lower than for fenced land.

在全年放牧草地中，地上总生物量、植被总覆盖度、植被平均高度等指标均低于围栏内的草地。

Cougars that were displaced from their kills by bears lost an average of 0.64 kg/day of ungulate biomass, or 17-26% of their daily energy requirements.

美洲狮因被棕熊从他们的猎物边赶走而失去了平均0.64kg/天的有蹄类生物量，相当于其每日所需的17~26%。

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。