干旱区生态环境知识资源中心(Arid): 陕西榆林地区明代旱灾与气候特征

Arid

	陕西榆林地区明代旱灾与气候特征
其他题名	Drought disaster and climate characteristics in Yulin region of Shaanxi Province in Ming Dynasty
	奚秀梅; 赵景波
来源期刊	自然灾害学报
ISSN	1004-4574
出版年	2013
卷号	22 期号:3 页码:104-111
中文摘要	通过对榆林地区文献资料的搜集整理,运用统计方法和小波变换,研究了该地区明代旱灾的等级、频次、周期和气候特征。结果表明,榆林地区明代共发生旱灾70年次,平均0.25次/a,且以大旱灾为主,夏季是旱灾多发季节。旱灾的发生具有明显的阶段性,1375-1424年、1555-1584年、1590-1614年是3个旱灾少发阶段,1480-1504年、1520-1539年、1625-1644年是3个旱灾多发阶段。榆林地区明代旱灾的准周期是3 a,8 a,17 a,39 a。各等级旱灾准周期相近,短周期约为3~4a,大旱灾的第一主周期为39 a。提出了榆林地区明代存在6个干旱气候事件,干旱气候事件期间,该区由半干旱气候变为干旱气候;大旱灾发生年的年降水量为320 mm左右,中度旱灾年的年降水量380 mm左右。
英文摘要	Based on literature collection and sorting,and the methods of statistical analysis and wavelet transform, this paper analyzed the grades,frequency and periodicity of the drought disasters and characteristics of the climate in Yulin region during the Ming Dynasty. Results indicate that,droughts had occurred 70 times in this region during Ming Dynasty (0.25times/year on average),and most are severe droughts. The drought-prone season in this region is Summer,and drought occurred with evident stages. The years of 1375 -1424,1555 -1584 and 1590 -1614 are seldom-occurrence stages,and the years of 1480 - 1504,1520 - 1539 and 1625 - 1644 are frequent-occurrence stages. In different time scales,the periods of drought disaster occurrences are 3 a,8 a,17 a and 39 a respectively. Various grades of droughts have similar quasi-periods with short quasi-period of 3 -4a and the dominant fundamental period of severe droughts of 39 a. This paper concluded that,in Yulin region in the Ming Dynasty,there were six drought climate events,and during the events,semi-arid climate turned into arid climate. This paper estimates that,annual precipitation is about 320 mm in severe drought years,and about 380mm in moderate drought years in Yulin region in Ming Dynasty.
中文关键词	旱灾 ; 等级 ; 气候 ; 小波分析 ; 榆林地区 ; 明代
英文关键词	drought grade Climate wavelet analysis Yulin region Ming Dynasty
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4881414
来源机构	陕西师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230757
作者单位	陕西师范大学旅游与环境学院, 西安, 陕西 710062, 中国
推荐引用方式 GB/T 7714	奚秀梅,赵景波. 陕西榆林地区明代旱灾与气候特征[J]. 陕西师范大学,2013,22(3):104-111.
APA	奚秀梅,&赵景波.(2013).陕西榆林地区明代旱灾与气候特征.自然灾害学报,22(3),104-111.
MLA	奚秀梅,et al."陕西榆林地区明代旱灾与气候特征".自然灾害学报 22.3(2013):104-111.