Stoichiometric determination of nitrate fate in agricultural ecosystems during rainfall events.
作者： Zuxin Xu , Yiyao Wang , Huaizheng Li
DOI: 10.1371/JOURNAL.PONE.0122484
关键词:
摘要: Ecologists have found a close relationship between the concentrations of nitrate (NO3-) and dissolved organic carbon (DOC) in ecosystems. However, it is difficult to determine NO3- fate exactly because low coefficient constructed relationship. In present paper, negative power-function equation (r2 = 0.87) was developed by using 411 data points DOC:NO3- ratios from several agricultural ecosystems during different rainfall events. Our analysis stoichiometric method reveals observations. First, concentration demonstrated largest changes when ratio increased 1 10. Second, biodegradability DOC an important factor controlling Third, sediment not only as denitrification site, but also major source for overlying water. Fourth, high able maintain groundwater. conclusion, this new can be used accurate estimation
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