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자료유형
학술대회자료
저자정보
(Griffith University)
저널정보
한국토양비료학회 한국토양비료학회 학술발표회 초록집 20th WORLD CONGRESS OF SOIL SCIENCE
발행연도
수록면
116 - 116 (1page)

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초록· 키워드

Nitrogen (N) deposition is a commonly recognized threat which aroused concerns for negative impacts on ecosystems and dramatically increasing amount. Microbial processes driving N cycling are hot topics in wide ranges under N deposition, abundances of nitrogen functional genes (NFGs) were usually used to represent N transformation rates, nevertheless field experimental N depositions were mostly conducted through applying N plentifully once or twice which may cause substantially different predictions on ecosystems compared with natural deposition. In order to close to true effects of N deposition and test potential mis-estimate of conventional N application on N turnover, 6 N addition rates (0-50g N m2yr-1) were used to represent variability of N deposition in diverse patterns, and applied into field monthly and half-yearly to simulate natural atmospheric N deposition and to act as conventional N application respectively to quantify abundance shift of nitrogen functional genes (NFGs) involved in N transformation, including nifH for nitrogen fixation, amoA of bacterial (AOB) and archaeal (AOA) for ammonia oxidation, narG for nitrate reduction; nirS and nirK for nitrite reduction, and nosZ for nitrous oxide reduction, after 3 years’ experimental N deposition. The N application amended s ... 전체 초록 보기
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