Experimental field estimation of organic nitrogen formation in tree canopies
Experimental field estimation of organic nitrogen formation in tree canopies
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DOI：
10.1016/j.envpol.2010.06.002
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发表时间：
2010-09-01
影响因子：
8.9
通讯作者：
Tang, Y. S.
中科院分区：
文献类型：
--
作者：
Cape, J. N.;Sheppard, L. J.;Tang, Y. S.
许多研究表明，在雨水通过森林冠层的过程中，有机氮的含量增加。这些有机氮的来源尚不清楚，但一般认为是来自于林冠对湿沉积或干沉积无机氮的处理，很少有现场的实验研究来解决林冠的形成或有机氮的损失。我们报告了两项研究：暴露于氨气的苏格兰松林冠，以及暴露于铵和硝酸盐湿沉积的锡特卡云杉林冠。在这两种情况下，穿透物中的有机氮沉积都有所增加，但只占一小部分(
The content of organic N has been shown in many studies to increase during the passage of rain water through forest canopies. The source of this organic N is unknown, but generally assumed to come from canopy processing of wet or dry-deposited inorganic N. There have been very few experimental studies in the field to address the canopy formation or loss of organic N. We report two studies: a Scots pine canopy exposed to ammonia gas, and a Sitka spruce canopy exposed to ammonium and nitrate as wet deposition. In both cases, organic N deposition in throughfall was increased, but only represented a small fraction (