Carbonyl Sulfide and Carbon Disulfide Emissions from Temperate and Boreal Forests Along an Acid Rain Gradient

羰基硫和二硫化碳是两种长寿命的 硫气体在化学中起着重要的作用， 平流层和地球的能量收支。 的幅度 这两种气体的各种来源并不清楚 已建立但目前的分析表明：1）生物和非生物 工业来源似乎在全球硫化羰中占主导地位 和二硫化碳输入到大气中;和2）高地 土壤似乎是主要的生物来源。 的大部分 世界上的高地土壤被森林覆盖。 在 在北方半球，许多森林都被 与酸雨有关的硫和氮的输入。 可能 有人认为，这两者之间存在着潜在的关系。 人为输入硫和氮的数量， 森林生态系统和硫化羰的数量， 二硫化碳从这些系统中释放出来。 温带和 受酸雨影响的北方森林 是硫化羰和二硫化碳的重要来源， 大气层 本项目涉及测量羰基硫 森林土壤中沿着一个酸 北美的降雨梯度，并测试的想法， 硫和氮的输入在一定程度上控制了这些森林 硫化羰和二硫化碳排放。

Carbonyl sulfide and carbon disulfide are two long.lived sulfur gases that play an important role in the chemistry of the stratosphere and the energy budget of the earth. The magnitudes of the various sources of these two gases are not well established but current analysis suggests that: 1) biotic and not industrial sources appear to dominate the global carbonyl sulfide and carbon disulfide inputs to the atmosphere; and 2) upland soils appear to be a major biotic source. A large fraction of the upland soils of the world are covered by forests. In the Northern Hemisphere, many of these forests are receiving high inputs of sulfur and nitrogen associated with acid rain. It may be suggested that there is a potential relationship between the magnitude of anthropogenic inputs of sulfur and nitrogen to forest ecosystems and the magnitude of carbonyl sulfide and carbon disulfide emitted from these systems. The temperate and boreal forests that are under the influence of acid rain may be an important source of carbonyl sulfide and carbon disulfide to the atmosphere. This project is concerned with measuring carbonyl sulfide and carbon disulfide emissions from forest soils along an acid rain gradient in North America and to test the idea that the sulfur and nitrogen inputs to these forests in part control the carbonyl sulfide and carbon disulfide emissions.