陕西历史旱灾发生规律研究

本文采取等级式量化方法,以年为时间单位,以灾区大小为基本依据,将上古至民国时期陕西旱灾史料转化为量化资料,然后对之进行了频次分析、阶段分析和周期分析。发现了陕西历史旱灾的一些统计规律,可为进一步研究和预测预报提供线索、依据。

ON THE REGULAR PATTERNS OF THE HISTORICAL DROUGHTS IN SHAANXI PROVINCE

According to the classification, taking a year as a unit time and disaster area size. this paper converts the historical records of drought from the ancient times to the Republic of China in Shaanxi province into the quantitative data. Through the analyses of frequencies and stages and pc riodicities, some regular patterns have been discovered, which provide some clue and basis for the further study and forecast.