摘要
整理广东省自然灾害史料中1400―1950年关于冻灾的记录资料。数据显示广东冻灾发生的频率高,受灾范围广,地区差异明显。将冻灾划分为4期,其中Ⅰ、Ⅱ、Ⅲ期属于小冰期范围,冻灾Ⅰ期1506―1549年,历时44a;冻灾Ⅱ期1615―1788年,历时174a;冻灾Ⅲ期1811―1898年,历时88a。前3期冻灾影响逐渐增大,反映了小冰期的3次冷波动,并受太阳活动周期的制约,其后Ⅳ期的影响转而变弱。
Historical records show that the frost disasters have the characteristics of high frequency, wide influence and distinct regional discrepancy in Guangzhou during 1400-1950. The frost history can be divided into four periods, 1506-1549, 1615-1788, 1811-1898 and 1915-1936. The former three periods belong to the range of Little Ice Age. The occurrence spatial distribution of the first and the second freeze-up had the trend from north to south, east to west, displaying the increase process of Little Ice Age. While the transference of third freeze-up is from south to north, west to east, showing the decrease process. The influence of the former three freeze-ups got larger little by little, while the fourth became faintness. The former three freeze-ups displayed three cold undulations in the Little Ice Age, and they were affected by the cycle of sun activities.
出处
《热带地理》
2008年第6期508-512,共5页
Tropical Geography
关键词
广东
冻灾期
地区差异
小冰期
Gongdong
freeze-up period
region discrepancy
Little Ice Age
