Sammanfattning

Diffuse phosphorus (P) losses from arable land need to be reduced in a cost-efficient way, taking into account their temporal and spatial variability. This study, based on 16 farms across southern Sweden, examined possibilities for identifying critical source areas for P losses based on the combined results of high-resolution erosion modelling, independent risk assessments by farmers, soil survey and SWOT analysis performed by farmers. Statistically significant differences in dissolved P release were found between soil P test classes in the studied area, whereas soil textural classes and not P content governed potential mobilisation of soil particles and unreactive P. Spatial comparison of problem areas identified by farmers and modelled features showed that the modelled erosion pathways intersected 109 in a total of 128 (85%) observed problem areas. The study demonstrates the value in involving farmers in the identification of critical source areas in order to select and support implementation of effective countermeasures.

Nyckelord

Eutrophication; Farm; High-resolution; Phosphorus; Site-specific; Targeting

Publicerad i

AMBIO: A Journal of the Human Environment
2018, Volym: 47, nummer: 1, sidor: 45-56

SLU författare

• Djodjic, Faruk

  • Institutionen för vatten och miljö, Sveriges lantbruksuniversitet
    

• Collentine, Dennis

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    

Globala målen

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

Markvetenskap
Miljö- och naturvårdsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1007/s13280-017-0935-5

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/86715