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搜索结果: 1-4 共查到natural abundance相关记录4条 . 查询时间(0.109 秒)
We analysed stable isotopes of N in a spruce forest under ambient rainfall (no further manipulation of the atmospheric input) and clean rain application (10 years of reduced inorganic N- and acid-cons...
This paper deals with natural abundance of 15N and 13C in the soil and needles of the pine forest (Pinus roxburghii, Sargent) along an altitudinal gradient. The study area lies in the elevation range ...
southern part. Seasonally, POM with high δ13C and low δ15N has appeared in summer, whereas the opposite is the case in spring and autumn. Horizontally, the summer POM with both higher δ13C and lower δ...
Surface aggregations of the diazotrophic cyanobacterium Trichodesmium were encountered at nearly every station along a 300-km transect in the northwestern Gulf of Mexico during July 2000. 15N2-fixati...

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