以史为鉴面向未来 关注预防灾害的粮油储备从崇祯大旱到三年自然灾害（A future oriented disaster prevention of grain and oil reserves attention from drought to Chongzhen three years of natural disasters）.docVIP

以史为鉴面向未来 关注预防灾害的粮油储备从崇祯大旱到三年自然灾害（A future oriented disaster prevention of grain and oil reserves attention from drought to Chongzhen three years of natural disasters） A future oriented disaster prevention of grain and oil reserves: attention from drought to Chongzhen three years of natural disasters.Txt character itself is not good or bad, optimistic and pessimistic both contribute to the world, the former invented the airplane, who invented the parachute. As for the future (2) focus on disaster prevention of grain and oil reserves: from drought to Chongzhen three years of natural disasters (Yang Xuexiang) Low temperatures lead to drought and unrest Abstract: in the period of 1200 to Chongzhen drought cycle global small ice age, three years of natural disasters in the cold period of the period of 60 years. Xu Jinghuas point of view deserves attention when the warm global economy is flourishing and cold leads to disasters and disturbances. Key words: Chongzhen three years of natural disasters, drought, 1200 period, 60 years period and cooling period 1. small glacial period, drought and global Chongzhen Xu Jinghua according to the history of human social development of global climate change period in the history of the global climate, the optimum period of prosperity and development of human society and the global small ice age led to agricultural production, famine and migration. One example is 1637-1643 years of the Ming Dynasty Chongzhen drought. In the 16-17 century, the global ice age, near 1000, Chinas first low temperature period in twelfth Century, which is Chinas climate before the continued warm (about 400 years), the first to become a sharp cold. Second low temperature periods occurred from the end of thirteenth Century to the first half of fourteenth Century. The third low temperature appears near the alternation of 15 and sixteenth Century. Fourth, the low temperature period appeared in seventeenth Century, and was the coldest period in the last 1000 year