Solutes in overland flow following fire in eucalyptus and pine forests, northern Portugal

✍ Scribed by Andrew D. Thomas; Rory P. D. Walsh; Richard A. Shakesby

• Book ID: 101284384
• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 367 KB
• Volume: 14
• Category: Article
• ISSN: 0885-6087
• DOI: 10.1002/(sici)1099-1085(20000415)14:5<971::aid-hyp4>3.0.co;2-j

✦ Synopsis

Small bounded plots were used to investigate dissolved nutrient losses in overland ¯ow in eucalyptus and pine forests in northern Portugal following understorey ®res. Losses of NO À 3 ±N, PO 3À 4 , Ca 2 , Mg 2 and K were measured over 19 months during the ®rst 2±3 years after ®re. Solute losses in overland ¯ow increased after ®re in eucalyptus and pine terrain due to the mineralization of litter and vegetation and increased overland ¯ow. The data suggest that (i) elevated losses persist for at least 2 and 3 years at the pine and eucalyptus sites respectively and (ii) soluble losses of PO 3À 4 and K in a post-®re cycle may exceed those adsorbed to eroded material. Losses of PO 3À 4 , although relatively small, are potentially the most detrimental to soil fertility and forest productivity because of the limited opportunity for P replenishment and correspondingly high P losses adsorbed to eroded sediment.