地理学报 ›› 2009, Vol. 64 ›› Issue (7): 839-849.doi: 10.11821/xb200907008

• 论文 • 上一篇    下一篇

蒙元时期陕甘宁交界地区干湿变化特征

戴君虎1,  肖树芳1, 2,  葛全胜1,  王梦麦1, 2,  崔海亭3   

  1. 1. 中国科学院地理科学与资源研究所,北京 100101;
    2. 中国科学院研究生院,北京 100049;
    3. 北京大学城市与环境学院,北京 100871
  • 收稿日期:2009-01-15 修回日期:2009-04-03 出版日期:2009-07-25 发布日期:2010-04-21
  • 作者简介:戴君虎, 博士, 副研究员, 生态学和自然地理专业, 中国地理学会会员 (S110001648m)。 E-mail: daijh@igsnrr.ac.cn
  • 基金资助:

    国家自然科学基金项目 (40871033; 40471047); 中国科学院知识创新工程重要方向项目 (KZCX2-YW-315)

Aridity-humidity Changes in the Borderland of Shaanxi, Gansu  and Ningxia

DAI Junhu1,  XIAO Shufang1, 2,  GE Quansheng1,  WANG Mengmai1, 2,  CUI Haiting3   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3. College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
  • Received:2009-01-15 Revised:2009-04-03 Online:2009-07-25 Published:2010-04-21
  • Supported by:

    National Natural Science Foundation of China, No.40871033; No.40471047; Knowledge Innovation Program of the Chinese Academy of Sciences, No.KZCX2-YW-315

摘要:

从官修正史、方志和历朝纪事本末、区域气象灾害年鉴等历史文献资料中提取关于陕甘宁交界地区 (元前期陕西四川行省的西北部以及元后期的陕西行省和甘肃行省的交界地区,主要包括宁夏府路、河州路、巩昌路、奉元路和延安路之间的部分) 的水涝、干旱等气候信息共240余条,利用湿润指数法、旱涝灾害定级法对其干湿变化特点进行研究。研究发现1208-1369年期间,陕甘宁交界地区气候总体以干旱为主。旱涝灾害发生频率的比例为85/38。按照旱涝变化类型可将研究区旱涝变化过程分为三个时段,1208-1240年是以干旱为主要特征,局部时段偶发水涝灾害的时期;1240-1320年,基本持续干旱,而且极端干旱事件频发;1320-1369年,旱灾略有好转,但是旱涝交并发生。蒙元时期陕甘宁交界地区的干湿变化具有明显的转折性和周期性。转折主要发生在1230年和1325年前后,以此两点为界,前后气候变化类型有比较明显的差异。蒙元时期的干湿变化具有10年和23年的准周期,均与太阳活动周期吻合,说明蒙元时期区域干湿变化受太阳活动影响较大。

关键词: 干湿变化, 陕甘宁交界地区, 历史气候, 元朝

Abstract:

More than 240 items of climatic information were chosen from the official historical books, local chronicles, annals and regional meteorological disaster yearbooks. By using Moisture Index and Flood-drought Index obtained from the above information, we studied the historical climate change, namely aridity-humidity conditions in the borderland of Shaanxi Province, Gansu Province and Ningxia Hui Autonomous Region. The results showed that during the period of 1208-1369, it tended to be dry in the region and the ratio of drought to flood disasters was 85-38. According to the frequency of drought-flood disasters, the period can be identified into three stages. (1) 1208-1240: drought dominated the stage with several flood disasters occasionally; (2) 1240-1320: Long-term drought disasters and the extreme drought events happened frequently; and (3) 1320-1369: The drought disasters were less severe but the flood and drought disasters happened alternately. Besides, the reconstructed aridity-humidity experenced an abrupt change as well as a periodicity in the Mongol-Yuan Period. The turning points were 1230 and 1325. There were 10-year and 23-year quasi-periods in the aridity-humidity changes, which were consistent with solar cycles, indicating that solar activity affected the aridity and humidity conditions of the study region in the Mongol-Yuan Period. The reconstructed results are consistent with two other study results rebuilt by natural evidences, and are also similar to another study result rebuilt by historical documents.

Key words: aridity-humidity change, historical climate, Yuan Dynasty, the borderland of Shaanxi, Gansu and Ningxia