Sammanfattning

When rainfall does not meet crop water requirements, supplemental irrigation is needed to maintain productivity. On-farm ponds can prevent excessive groundwater exploitation - to the benefit of the whole community - but they reduce the cultivated area and require investments by each farmer. Thus, choosing the source of water for irrigation (groundwatervson-farm pond) is a problem of collective action. An agent-based model is developed to simulate a smallholder farming system; the farmers' long-/short-view orientation determines the choice of the water source. We identify the most beneficial water source for economic gain and its stability, and how it can change across communities and under future climate scenarios. By using on-farm ponds, long-view-oriented farmers provide collective advantages but have individual advantages only under extreme climates; a tragedy of the commons is always possible. Changes in farmers' attitudes (and hence sources of water) based on previous experiences can worsen the economic outcome.

Nyckelord

agent-based model; precipitation unpredictability; collective action; supplemental irrigation; groundwater; on-farm ponds; crop yield

Publicerad i

Hydrological Sciences Journal
2020, Volym: 65, nummer: 11, sidor: 1815-1829
Utgivare: TAYLOR AND FRANCIS LTD

SLU författare

• Tamburino, Lucia

  • Institutionen för växtproduktionsekologi, Sveriges lantbruksuniversitet
    

• Vico, Giulia

  • Institutionen för växtproduktionsekologi, Sveriges lantbruksuniversitet
    

Globala målen

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


UKÄ forskningsämne

Oceanografi, hydrologi, vattenresurser


Publikationens identifierare

DOI: https://doi.org/10.1080/02626667.2020.1769103

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/107034