【摘 要】
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Isotope paring technique was applied to measure sedimentary NO3 removal off the Changjiang River receiving large amount of bioavailable nitrogen.Results showed that unexpectedly high NO3 removal and N
【机 构】
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Research Center for Environmental Changes, Academia Sinica, Taipei 115, Taiwan
论文部分内容阅读
Isotope paring technique was applied to measure sedimentary NO3 removal off the Changjiang River receiving large amount of bioavailable nitrogen.Results showed that unexpectedly high NO3 removal and N2O production were probably caused by nitrifier denitrification or co-denitrification.N2O instead of N2 was the major product, indicating that underestimation of denitrification would ensue, if measuring solely N2 production.Such sedimentary non-canonical denitrification may exacerbate greenhouse effect by producing N2O, a potent greenhouse gas.Moreover, the rapid removal of NO3 might cause a dramatic shift from P-limiting to N-limiting system in coastal zones.
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