TY  - JOUR
AU  - Holzmann, Stefan
AU  - Missong, Anna
AU  - Puhlmann, Heike
AU  - Siemens, Jan
AU  - Bol, Roland
AU  - Klumpp, Erwin
AU  - Wilpert, Klaus von
TI  - Impact of anthropogenic induced nitrogen input and liming on phosphorus leaching in forest soils
JO  - Journal of plant nutrition and soil science
VL  - 179
IS  - 4
SN  - 1436-8730
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2016-06120
SP  - 443 - 453
PY  - 2016
AB  - Phosphorus (P) is essential for sustainable forest growth, yet the impact of anthropogenic impacts on P leaching losses from forest soils is hardly known. We conducted an irrigation experiment with 128 mesocosms from three forest sites representing a gradient of resin extractable P of the A-horizon. On each site we selected a Fagus sylvatica and a Picea abies managed subsite. We simulated ambient rain (AR), anthropogenic nitrogen input (NI) of 100 kg (ha · a)−1 and forest liming (FL) with a dolomite input of 0.3 Mg (ha · a)−1. Soil solution was extracted from the organic layer, 10 cm depth and 20 cm depth of the mesocosms, and analyzed for molybdate reactive phosphorus (MRP) and molybdate unreactive phosphorus (MUP). Additionally, we separated colloids from the soil solution using Asymmetric Field Flow Fractionation for assessing the colloidal fraction of total element concentrations. NI increased MRP and MUP concentrations for all plots with one exception, while FL decreased MRP and MUP with the exception of another plot. While the irrigation treatments had little impact on the P-richest site, MRP and MUP concentrations changed strongly at the poorer sites. The colloidal fraction of P in the soil solution equaled 38–47% of the total P load. Nitrogen input and liming also affected the Fe, Al, Ca, and Corg contents of the colloidal fraction.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000380907100006
DO  - DOI:10.1002/jpln.201500552
UR  - https://juser.fz-juelich.de/record/820856
ER  -