Environmental effects of energy crop cultivation in Sweden—II: Economic valuation

摘要: In this paper, environmental benefits of the cultivation perennial energy crops in Sweden, which have been identified and quantified an earlier are evaluated economically. Several different benefits, ranging from global to site-specific, could be achieved by replacing annual food with crops. The economic value these including reductions costs farmers (direct costs) society as a whole (external costs), has estimated US$ 0.1 up 5/GJ biomass. For comparison, production (excluding transport) Salix reed canary grass about 4.4 5.0/GJ, respectively. Purification waste water crop highest value, followed reduced nutrient leaching through riparian buffer strips, recirculation sewage sludge, wind erosion shelter belts consisting Salix. other is less than 0.7/GJ. If 200,000 ha Sweden’s totally available arable land 2.8 Mha were for cultivation, around 45 PJ biomass theoretically produced per year, at average cost 0.7/GJ, benefits. It assumed that priority given cultivations total several effects on same site. 800,000 available, corresponding some 150 GJ year would 2.8/GJ.