摘要
以灾害文献记载为数据来源,利用数理统计、空间分析、小波分析等方法,对1644—1949年汉中地区水旱灾害发生的时空格局及成因进行探讨,以期为当今水旱灾害的防治提供镜鉴。结果表明:(1)1644—1949年汉中地区发生水灾111次,平均2.76年发生1次;旱灾41次,平均7.46年发生1次。(2)水旱灾害发生具有季节性,水灾主要发生在夏季,春季和秋季亦有发生;旱灾主要发生在秋季,春季和夏季亦有发生;双季节水旱灾害发生集中于夏秋季。(3)水旱灾害发生地差异性显著,聚集于经济发达区域。(4)汉中地区的水灾以中度为主,旱灾以重度为主;水灾发生存在140、60、30年一个周期;旱灾发生存在170、100、50、30年一个周期;自然因素及人类活动影响水旱灾害发生。
Based on the disaster literature as the data source,the spatial and temporal patterns and causes of flood and drought disasters in Hanzhong area from 1644 to 1949 were discussed by means of mathematical statistics,spatial analysis and wavelet analysis,in order to provide a mirror for the prevention and control of flood and drought disasters.The results show that:(1)111 floods occurred in Hanzhong from 1644 to 1949,with an average of 1 in 2.76 years.There were 41 droughts,with an average of one in 7.46 years.(2)The occurrence of floods and droughts is seasonal,and floods are concentrated in summer,spring and autumn.Drought concentrated in autumn,spring and summer also occurred.Double season floods and droughts occur concentrated in summer and autumn.(3)There are significant differences in the occurrence of flood and drought disasters,which are concentrated in economically developed regions.(4)The flood in Hanzhong area is mainly moderate,and the drought is mainly severe;floods exist 140,60,30 years a cycle;droughts occur in cycles of 170,100,50,and 30 years.Natural factors and human activities affect the occurrence of floods and droughts.
作者
孙舔轲
牛俊杰
岳云霄
杨东甲
SUN Tian-ke;NIU Jun-jie;YUE Yun-xiao;YANG Dong-jia(Institute of Geographical Science,Taiyuan Normal University,Jinzhong 030619,China;Research Center for Scientific Development of Fenhe River Valley,Taiyuan Normal University,Jinzhong 030619,China)
出处
《陕西理工大学学报（自然科学版）》
2022年第6期84-92,共9页
Journal of Shaanxi University of Technology:Natural Science Edition
基金
国家社会科学基金青年项目(17CZS003)
教育部人文社会科学研究规划基金项目(19YJAZH066)
山西省高等学校人文社科重点研究基地项目(20200133)
山西省回国留学人员科研资助项目(2017-105)。
