关键词: 秋茄, 盐度, 淹水时间, 生长量, 生物量, 主成分分析

Abstract: Based on the 1961-2008 meteorological observation data from ground meteorological stations and the growth conditions of potato across Gansu Province, the grid series with a high resolution of 500 m ×500 m was calculated by small grids reckoning models. The climatic allocation index for potato planting was established, and, in combining with geographic information and using GIS technology, the potato planting in the Province under gradual climate change was allocated. From 1961 to 2008, due to the climate change, the highly suitable and suitable planting areas of potato in the Province decreased by 35% and 3% while the sub-suitable and fair planting areas increased by 18.5% and 6.6%, respectively, and the unsuitable planting area reduced by 2.0%. According to the regional climate characteristics, it was suggested that the allocation of potato planting should be adjusted. The date of planting potato should be properly adjusted to escape the frost in spring, the high-temperature harm at tuber-forming stage, and the drought in summer. Various agricultural measures should be adopted, the area for potato planting should be enlarged, and multi-cropping index should be increased. It was expected that with the future global warming, the potato’s growth period, tuber yield, and planting allocation in the Province would be further affected. This study could provide scientific reference for the potato production and its adaptation to climate change in Gansu Province.

Key words: Kandelia obovata, salinity, waterlogging time, growth, biomass, principal components analysis.