Sammanfattning

Short-term increases in soil solution nitrate (NO(3)(-)) concentration are often observed after forest harvest, even in N-limited systems. We model NO(3)(-) leaching below the rooting zone as a function of site productivity. Using national forest inventories and published estimates of N attenuation in rivers and the riparian zone, we estimate effects of stem-only harvesting on NO(3)(-) leaching to groundwater, surface waters and the marine environment. Stem-only harvesting is a minor contributor to NO(3)(-) pollution of Swedish waters. Effects in surface waters are rapidly diluted downstream, but can be locally important for shallow well-waters as well as for the total amount of N reaching the sea. Harvesting adds approximately 8 Gg NO(3)-N to soil waters in Sweden, with local concentrations up to 7 mg NO(3)-N 1(-1). Of that, similar to 3.3 Gg reaches the marine environment. This is similar to 3% of the overall Swedish N load to the Baltic. (C) 2010 Elsevier Ltd. All rights reserved.

Nyckelord

Nitrate; Forests; Baltic

Publicerad i

Environmental Pollution
2010, Volym: 158, nummer: 12, sidor: 3552-3559
Utgivare: ELSEVIER SCI LTD

SLU författare

• Futter, Martyn

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

• Bishop, Kevin

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

Associerade SLU-program

SLU Future Forests


Globala målen

SDG6 Säkerställa tillgången till och en hållbar förvaltning av vatten och sanitet för alla


UKÄ forskningsämne

Fisk- och akvakulturforskning


Publikationens identifierare

DOI: https://doi.org/10.1016/j.envpol.2010.08.016

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/47826