氮的矿化是土壤氮循环中的重要环节之一。
Nitrogen mineralization is one of the most important aspects in soil nitrogen circulation.
为环状构造的化合物，环中一个或多个碳原子被另一元素的一个原子（诸如氮、硫、或氧）所取代。
Ring compounds in which one or more of the carbon atoms in the ring are replaced by an atom of another element such as nitrogen, sulfur or oxygen.
本文报道了南黄海表层沉积物中不同形态氮的区域分布特征及其在生物地球化学循环中的作用。
The distributions and functions of various forms of nitrogen in the biogeochemical cycling in the southern Yellow Sea surface sediments were investigated.
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