Climate change and potato cropping in the Peruvian Altiplano

摘要: The potential impacts of climate change on potatoes cropping in the Peruvian highlands (Altiplano) is assessed using projections for 2071–2100, obtained from HadRM3P regional atmospheric model Hadley Centre. run under two different special report emission scenarios: high CO2 concentration (A2) and moderate (B2) four locations situated surroundings Lake Titicaca. main varieties potato cultivated area are studied: Andean (Solanum tuberosum) bitter juzepczukii). A simple process-oriented used to quantify climatic crops cycles yields by combining effects temperature phenology, radiation maximum yield water balance deficit. In future climates, air systematically increases, precipitation tends increase at beginning rainy season slightly decreases during rest season. direct these changes earlier planting dates, less failures shorter crop all both scenarios. Consequently, harvesting dates occur earlier: roughly January instead March current situation February April. Overall, deficits will be higher than climate. There a strong negative impact S. tuberosum (stronger A2 scenario B2); juzepczukii yields, however, appears relatively mixed not so negative.