植物从土壤中吸取矿物质和其他养分。
一种非本地的植物通过占用土壤中的养分来扼杀本地植物。
A non-native plant chokes out native plants by hogging the nutrients in the soil.
养分和矿物质容易从沙质土壤中流失，因此沙质土壤往往较为贫瘠。
Sandy soils are prone to the leaching of nutrients and minerals and so tend to be nutritionally poor.
由于养分的重要性和贫乏性，营养循环是我们在这门课中会讲到的最重要的生态系统过程之一。
Because of the importance of nutrients and their scarcity, nutrient recycling is one of the most significant eco-system processes that we'll cover in this course.
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
这些条件有助于进化出用于支撑枝干的结构、运输水分和养分到植物各部分的导管以及储存水分的结构。
These conditions favored the evolution of the structures that support the body, vessels that transport water and nutrients to all parts of plant, and structures that conserve water.
一旦腐殖质层消失，养分就无法从土壤中回收和过滤，致使土壤由肥沃变为贫瘠，只适于热带草原植被的生长。
Once the humus layer disappears, nutrients cannot be recycled and leach from the soil, converting soil from fertile to infertile and making it suitable only for savanna vegetation.
在现代农业中，土壤的矿物损耗是一个主要的问题，因为收割农作物会中断养分的循环，使其无法重新回到土壤中。
In modern agriculture, mineral depletion of soils is a major concern, since harvesting crops interrupts the recycling of nutrients back to the soil.
人们开始越来越多地使用脱水后的动物粪便作为替代燃料，这同样会损害土壤，因为这些珍贵的土壤改良剂和植物养分的来源将无法再回归到土壤之中。
The increasing use of dried animal waste as a substitute fuel has also hurt the soil because this valuable soil conditioner and source of plant nutrients is no longer being returned to the land.
土壤这样贫瘠，植物能获得足够的养分吗？
他试探着提出了植物从空气中吸取它们的部分养分的观点。
He ventured that plants draw part of their nourishment from the air.
此外，还有人担心打印食品的健康价值：我们真的有可能从以食品为基础成分的“墨水”或类似的东西中得到需要的养分吗？
Also, here are worries about the healthy value of printed food: is it really possible to get what we need from food-based "inks" or something like that?
不同的作物轮耕，以防止土壤养分枯竭。
Rotate agricultural crops to prevent the sapping of nutrients.
小草将吸收到生长所需的养分、糖和能量。
The grass absorbs the nutrients, sugar and energy it needs to be able to grow.
碎石子可以用来补充土壤，增加土壤养分。
Gravel dust (see our global ideas bank's "Saving the Planet With Gravel dust") could be used to supplement the soil and increase soil nutrients even further.
传统食物水分含量较高，稀释了其养分含量。
The higher water content in conventional foods dilutes its nutrient contents.
浮游植物的成长取决于二氧化碳，阳光以及养分的多寡。
Phytoplankton growth depends on the availability of carbon dioxide, sunlight, and nutrients.
洪说，部分原因是压力有助于养分注入没有血管的软骨。
Hung says this is partly because the pressure helps to pump nutrients into cartilage, which has no blood vessels.
它们在养分水平偏低的偏远海洋中数量稀少(呈深蓝色)。
They are scarce in remote oceans (dark blue), where nutrient levels are low.
暴雨已将养分冲入湖中，把一向清澈的湖水变成了翠绿色。
Heavy rains have washed nutrients into the lake, turning the usually clearer waters emerald green.
与此相反，因为养分的限制，在偏远的洋流中浮游植物非常罕见。
By contrast, phytoplankton are scarce in remote ocean gyres due to nutrient limitations.
顶部的管道定时释放含有养分的水，滋养那些可爱的植物。
Piping at the top periodically releases water mixed with fertilizer, dampening the felt and nourishing the plants.
这些低养分的“海洋沙漠”的扩张似乎是由于海洋表面温度上升引起的。
These low-nutrient “marine deserts” appear to be expanding due to rising ocean surface temperatures.
批评者说，他们会导致人们摄取过多的特定养分，以及过多的热量和脂肪。
Critics say they could lead people to consume too much of certain nutrients, plus too many calories and fats.
令人担忧的问题包括家禽粪便养分和病原微生物造成的地表水和地下水退化。
Concerns include the degradation of surface and groundwater owing to poultry waste nutrients and pathogenic microorganisms.
“大部分的粗纤维都在皮上，但更重要的是，大部分的养分也在皮上，”他说。
"Most of the fiber is in the peel, but more importantly, most of the nutrients are in the peel," he says.
来自两条大河，恒河和雅鲁藏布江的养分滋润着地势低洼的恒河三角洲的稻谷。
Nutrients from the two great rivers of Ganges and Brahmaputra feed the soil of the paddies in the low-lying Ganges Delta.
桉树扎下根后将会带来更多的土壤养分与降水，并进一步促进植物的生长。
As the trees take root, they will replenish the soil and cause more rainfall, allowing for even more growth.
超过2,500个外来植物物种已经植根于澳大利亚和新西兰，争夺阳光和养分。
More than 2, 500 invasive plant species have colonised Australia and New Zealand, competing for sunlight and nutrients.
超过2,500个外来植物物种已经植根于澳大利亚和新西兰，争夺阳光和养分。
More than 2, 500 invasive plant species have colonised Australia and New Zealand, competing for sunlight and nutrients.
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