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

温带和北方森林沿酸雨梯度的硫化碳和二硫化碳排放

基本信息

批准号：
8714673
负责人：
Paul Steudler
金额：
$ 47.27万
依托单位：
Marine Biological Laboratory
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1988
资助国家：
美国
起止时间：
1988-01-01 至 1991-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8714673&HistoricalAwards=false
关键词：
Carbonyl Sulfide Carbon Disulfide Emissions

项目摘要

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.

羰基硫化物和二硫化碳是两个长。有生命的含硫气体在平流层的化学反应和地球的能量收支中起着重要作用。这两种气体的各种来源的大小尚未得到很好的确定，但目前的分析表明：1)生物来源而不是工业来源似乎主导了全球向大气输入的羰基硫化物和二硫化碳；高地土壤似乎是主要的生物来源。世界上很大一部分高地土壤被森林覆盖。在北半球，许多这样的森林正在接受与酸雨有关的大量硫和氮的输入。这可能表明，森林生态系统的人为硫和氮输入量与这些系统排放的羰基硫化物和二硫化碳的量之间存在潜在的关系。受酸雨影响的温带和北方森林可能是大气中羰基硫化物和二硫化碳的重要来源。该项目涉及测量北美酸雨梯度下森林土壤的羰基硫和二硫化碳排放，并测试向这些森林输入的硫和氮在一定程度上控制羰基硫和二硫化碳排放的想法。