Sammanfattning

Identification of vulnerable arable areas to phosphorus (P) losses is needed to effectively implement mitigation measures. Indicators for source (soil test P, STP), potential mobilization by erosion (soil dispersion), and transport (unit-stream power length-slope, LS) risks were used to screen the vulnerability to suspended solids (SS) and P losses in two contrasting catchments regarding topography, soil textural distribution, and STP. Soils in the first catchment ranged from loamy sand to clay loam, while clay soils were dominant in the second catchment. Long-term SS and total P losses were higher in the second catchment in spite of significantly lower topsoil STP. A higher proportion of areas in the second catchment were identified with higher risk due to the significantly higher risk of overland flow generation (LS) and a significantly higher mobilization risk in the soil dispersion laboratory tests. A simple screening method was presented to improve the placement of mitigation measures.

Nyckelord

Erosion; Critical source areas; Phosphorus; Risk screening

Publicerad i

AMBIO: A Journal of the Human Environment
2015, Volym: 44, nummer: 7, sidor: 612-623
Utgivare: SPRINGER

SLU författare

• Villa Solis, Ana

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    

• Djodjic, Faruk

  • Institutionen för markvetenskap, Sveriges lantbruksuniversitet
    

• Bergström, Lars

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    

• Kyllmar, Katarina

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    

Globala målen

SDG15 Skydda, återställa och främja ett hållbart nyttjande av landbaserade ekosystem, hållbart bruka skogar, bekämpa ökenspridning, hejda och vrida tillbaka markförstöringen samt hejda förlusten av biologisk mångfald


UKÄ forskningsämne

Miljövetenskap
Multidisciplinär geovetenskap


Publikationens identifierare

DOI: https://doi.org/10.1007/s13280-015-0680-6

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/74999