大气中含有少量一氧化二氮。
牙医可能会给病人一氧化二氮，这样他们就不会感到疼痛。
Dentists may give patients nitrous oxide so they will not feel pain.
昆虫产生的氨比猪和家禽少，它们产生的甲烷比家畜少十倍，而产生的一氧化二氮比家畜少三百倍。
Insects produce less ammonia than pig and poultry farming, ten times less methane than livestock, and 300 times less nitrous oxide.
一氧化二氮又叫做笑气。
土壤储存有机碳，但会释放甲烷和一氧化二氮。
Soil stores organic carbon, but can emit methane and nitrous oxide.
其中70%是由甲烷和一氧化二氮的排放造成的。
70% of this was caused by methane and nitrous oxide emissions.
结果：一氧化二氮成为一种早期的麻醉剂。
As a result: Nitrous oxide became an early form of anesthesia.
在人为引起的气候变化中，科学家估计一氧化二氮约占6%。
Scientists estimate nitrous oxide accounts for about 6 percent of human-induced climate change.
手术之前，患者会吸入这些混合着氧气或一氧化二氮的麻醉气体。
Before a procedure, patients inhale these gasses, which are mixed with either oxygen or nitrous oxide.
全球的一氧化二氮排放量中大约有三分之一是由人类活动造成的。
About a third of global nitrous oxide emissions are from human activity.
氧气充足的条件下，微生物生成一氧化二氮的速率很低。
Under well-oxygenated conditions, microbes produce N2O at low rates.
特别令人担忧的是强效温室气体一氧化二氮排放的不确定性。
Of particular concernis the uncertainty over emissions of the potent greenhouse gas nitrousoxide.
随着溶在水中的氧气水平下降，生成的一氧化二氮就会增加。
Increased N2O production occurs as dissolved oxygen levels decline.
据气候变化框架公约创建一个协议，以减少畜牧业产生的甲烷和一氧化二氮。
Initiate a protocol under UNFCCC to reduce methane and nitrous oxide produced by livestock.
氮氧化物(一氧化二氮)是一种比二氧化碳强300倍的温室气体。
Nitrous oxide (N2O) is a greenhouse gas 300 times more potent than carbon dioxide.
集约化农业生产使用化肥，施到土壤中的化肥会释放强大的温室气体一氧化二氮。
Intensive farms also use fertilizers which release the powerful greenhouse gas nitrous oxide when applied to the soil.
农业产生的甲烷与一氧化二氮，在人为导致的全球变暖[因素]中，占了约10%。
Methane and nitrous oxides produced by agriculture account for about 10% of man-made warming.
但当氧气浓度下降到缺氧的水平，这些水域就会增加一氧化二氮的生成。
But at oxygen concentrations decrease to hypoxic levels, these waters can increase their production of N2O.
此外，与未经过处理的土壤相比，含生物碳的土壤会释放较少的甲烷和一氧化二氮。
Moreover, soil containing biochar releases less methane and less nitrous oxide than its untreated counterparts, probably because the charcoal ACTS as a catalyst for the destruction of these gases.
因为降水通常会加剧土壤中一氧化二氮向外排放，她也搜集每次降雨或降雪后的数据。
Because precipitation usually increases nitrous oxide emissions from the soil, she also collects data after any rain or snowfall.
甲烷和一氧化二氮的排放主要是农业活动的结果：一氧化二氮源于化肥而甲烷主要来自奶牛。
The emission of methane and nitrous oxide is largely the result of agricultural activities; nitrous oxide from fertilisers and methane mostly from cows.
像高兰尼一样，约翰逊利用特制的取样器测量全年排放的二氧化碳、甲烷和一氧化二氮的含量。
Like Gollany, Johnson USES the specialized Chambers to measure the levels of carbon dioxide, methane, and nitrous oxide released throughout the entire year.
他们发现，溪流中一氧化二氮的数量与人类活动释放到环境中的氮有关，如使用化肥和污水排放。
They found that the amount of nitrous oxide produced in streams is related to human activities that release nitrogen into the environment, such as fertilizer use and sewage discharges.
科学家们指出，一氧化二氮也是一种威力甚大的温室气体，而温室气体会导致全球变暖。
Nitrous oxide is also a potent greenhouse gas, which contributes to global warming, so efforts to restrict emissions could tackle climate change as well as ozone loss, the scientists say.
事实上，畜牧业所产生的二氧化碳排放量占9%，同时释放出37%的甲烷，及65%的一氧化二氮。
In fact, while animal agriculture accounts for 9% of our carbon dioxide emissions, it emits 37% of our methane, and a whopping 65% of our nitrous oxide.
未来海洋一氧化二氮产生的关键取决于占海洋体积约10%的缺氧和低氧水域到底会怎样。
The future of Marine N2O production depends critically on what will happen to the roughly ten percent of the ocean volume that is hypoxic and suboxic.
在那里，经称为脱氮的过程，微生物把氮转化为一氧化二氮(又称笑气)和一种称为二氮的惰性气体。
There, in a process called denitrification, microbes convert the nitrogen into nitrous oxide (also called laughing gas) and an inert gas called dinitrogen.
虽然二氧化碳是更为普遍的温室气体，但与二氧化碳相比，一氧化二氮是其致暖潜力的300倍以上。
Compared with carbon dioxide, nitrous oxide is 300-fold more potent in terms of its warming potential, though carbon dioxide is a far more prevalent greenhouse gas.
她的结论是，如果使用得当，甲烷和一氧化二氮排放量测量的不确定性可从约50%降低到不足10%。
She concluded that when used properly, uncertainty in measured emission levels of methane and nitrous oxide could be reduced from about 50% to less than 10%.
她的结论是，如果使用得当，甲烷和一氧化二氮排放量测量的不确定性可从约50%降低到不足10%。
She concluded that when used properly, uncertainty in measured emission levels of methane and nitrous oxide could be reduced from about 50% to less than 10%.
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