Atmospheric Deposition and Canopy Interactions of Major Ions in a Forest
Atmospheric Deposition and Canopy Interactions of Major Ions in a Forest
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DOI：
10.1126/science.231.4734.141
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发表时间：
1986-01
期刊：
影响因子：
56.9
通讯作者：
Steven E. Lindberg;Gary M. Lovett;Daniel Richter;Dale W. Johnson
中科院分区：
文献类型：
--
作者：
Steven E. Lindberg;Gary M. Lovett;Daniel Richter;Dale W. Johnson
空气中的颗粒物和蒸汽的贡献显着的营养需求和污染物负荷的混合硬木森林在美国东部。干沉降是一个重要的机制，大气输入到叶冠，发生主要是由蒸汽吸收硫，氮，和游离酸和颗粒沉积钙和钾。冠层保留了50%至70%的沉积的游离酸和氮，但释放钙和钾。大气沉降提供了40%和100%的氮和硫的需求，分别为每年的木本增量。这一贡献被标准的大量沉积收集器大大低估了。
Airborne particles and vapors contributed significantly to the nutrient requirements and the pollutant load of a mixed hardwood forest in the eastern United States. Dry deposition was an important mechanism of atmospheric input to the foliar canopy, occurring primarily by vapor uptake for sulfur, nitrogen, and free acidity and by particle deposition for calcium and potassium. The canopy retained 50 to 70 percent of the deposited free acidity and nitrogen, but released calcium and potassium. Atmospheric deposition supplied 40 and 100 percent of the nitrogen and sulfur requirements, respectively, for the annual woody increment. This contribution was underestimated significantly by standard bulk deposition collectors.