N_2O对全球变暖和臭氧层破坏的影响

Future Global Warming and Ozone Perturbation due to Increase in N_2O

随着大气污染的加剧,将不可避免地导致全球规模的环境破坏。例如,氮氧化物和硫氧化物可造成酸雨、氟里昂可导致臭氧层破坏、二氧化碳等可导致全球温度上升(温室效应)。但是,大气、水或气候的变化并不是由一种或两种物质单独造成的,而是由多种化学成分复杂作用的结果。这些成分对某些现象有害,而对另外现象可能有利。为了切实掌握今后全球环境变化的模式,首先应严格区分当前科学上已经证实的事实和对未来的各种推测。具体说,应正确掌握有关全球规模的各种化学成分的化学性质、物理性质、其发生源及消失过程、环境中的浓度及分布状态,以及今后的增减情况。

The increase of air pollution will inevitably lead to global environmental destruction.For instance,nitrogen and sulfur oxides can form acid rain;Freon can disrupt ozone layer;Carbon dioxide can affect global temperature in- crease.However,air,water or climatic change is not caused by one or two individual materials.It is the result of complicated reaction of many chemical elements. N_2O,whose chemical property is stable,has little impact on stratosphere or organisms.But it can destruct the ozone layer in stratosphere as freon does and increase the global temperature as CO_2.The increase of N_2O con- centration is not as fast as other pollutants.The quantity of N_2O made by human activities is not fully known. But the quantity of N_2O formed in natural processes is relatively large,amounting to 300 ppb in atmosphere. This paper focuses on N_2O which is one of nitrogen oxides and discusses its global implications.