Data from: A meta-analysis on nitrogen retention by buffer zones

Elena Valkama, Kirsi Usva, Merja Saarinen & Jaana Uusi-Kämppä
Buffer zones, established between agricultural fields and water bodies, are widely used as a measure to reduce nitrogen (N) in surface runoff and groundwater. However, the literature indicates inconsistent results on the N removal efficiency of buffer zones between studies. We performed a weighed meta-analysis on the buffer zone effects on nitrate-N and total N in surface runoff and groundwater by summarizing 46 studies published between 1980 and 2017. The overall effects of buffer zones...
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