Spatial distribution of nutrients in throughfall beneath the crowns of three urban tree species

This study was performed to assess the variability in throughfall chemistry from urban trees. The major objectives were to determine if throughfall nutrient chemistry varied with distance from tree boles, if throughfall chemistry differed significantly for three urban tree species, and the number of samples needed to accurately estimate throughfall chemistry under individual trees.

[Ti: Spatial distribution of nutrients in throughfall beneath the crowns of three urban tree species]
[Au: Edwards, P.J. and, DeWalle, D.R., ,]
[So: Pennsylvania State University, School of Forest Resources. Research Briefs 16(1):6-8.]
[Ky: Physical Benefits of Urban Forests]]