Comprehensive Environmental Assessment of Potato as Staple Food Policy in China.

ABSTRACT: The Chinese government projected 30% of total consumed potatoes as a staple food (PSF) by 2020. We comprehensively assessed the potential impacts of PSF on rice and flour consumption, rice and wheat planting, energy and nutrient supply, irrigation-water, chemical nitrogen (N), phosphorus pentoxide (P2O5) and potassium oxide (K2O) fertilizer inputs and total greenhouse gases (GHG) emission for potatoes, rice and wheat, by assuming different proportions of potato substitutes for rice and flour. The results showed that per capita, 2.9 ± 0.3 and 4.7 ± 0.5 kg more potatoes per year would enter the Chinese staple-food diet, under the government's target. PSF consumed are expected to reach 5.2 ± 0.7 Tg yr-1, equivalent to substituting potatoes for 4.2 ± 0.8-8.5 ± 0.8 Tg yr-1 wheat and 5.1 ± 0.9-1

SUBMITTER: Gao B 

PROVIDER: S-EPMC6695635 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature