Effects of antecedent soil moisture on losses of rare earth elements and phosphorus in runoff
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The effects of antecedent soil moisture on losses of rare earth elements (REEs) and phosphorus (P) in runoff were evaluated through a simulated rainfall experiment at the rate of 83 mm h−1. The results revealed that antecedent moisture was a significant factor affecting the amounts of REE and P losses. It was observed that most REEs and P transported with sediments in the runoff. There was a significant correlation between the total amounts of REE losses and those of P losses in the runoff. The optimal antecedent moisture for minimization of losses for REEs ranged from 10.19 to 11.17% and it was 10.91% for P.
KeywordsAntecedent soil moisture Soil Phosphorous Rare earth elements Runoff
This study was sponsored by the National Natural Scientific Foundation of China (No.40871225) and the National Key Project for Basic Research (2012CB417004). In this study the simulated rainfall experiments were conducted at Fangshan Experimental Center of Beijing Normal University. The authors thank Baoyuan Liu and Xiaofei Gao for their help in the experiments.
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