Figure 2From: Nitrogen leaching losses from forests in New ZealandImpact of logging (1976) and burning (1977) operations on subsequently estimated nitrate-N leaching losses at 1Â m depth in radiata pine forest on volcanic ash soil, Kaingaroa Forest. Leaching was estimated assuming drainage was one third of annual precipitation (1400Â mm). After Dyck et al. (1981).Back to article page