中国北方近50年干旱变化特征
收稿日期: 2003-02-25
修回日期: 2003-06-17
网络出版日期: 2003-12-25
基金资助
科技部“我国干旱、半干旱区生存环境变化与预测研究”(973) 项目(G1999043405);科技部“全球环境变化对策与支撑技术研究”项目(2001BA611B-01)
Climate Change in Drought over Northern China during 1950-2000
Received date: 2003-02-25
Revised date: 2003-06-17
Online published: 2003-12-25
Supported by
The Ministry of Science and Technology, No.G1999043405; No.2001BA611B-01
王志伟,翟盘茂 . 中国北方近50年干旱变化特征[J]. 地理学报, 2003 , 58(7s) : 61 -68 . DOI: 10.11821/xb20037s007
Based on China's monthly precipitation data of 629 stations during 1950-2000, we calculated Z indices and separated them into seven Dryness and Wetness grades. Furthermore, a drought area index was proposed to study changes of drought extent. The results revealed that the different grades of droughts all show expanding trends in northern China's main agricultural area. Moreover, the area coverage of droughts in different seasons and different regions displayed different trends.
Key words: northern China; drought coverage; trend
[1] Zhai Panmao, Ren Fumin, Zhang Qiang. Detection of trends in China's precipitation extremes. Acta Meteorologica Sinica, 1999, 57(2): 208-216.
[翟盘茂, 任福民, 张强. 中国降水极值变化趋势检测. 气象学报, 1999, 57(2): 208-216.]
[2] Ma Zhuguo, Fu Congbin. Trend of surface humid index in the arid area of northren China. Acta Meteorologica Sinica, 2001, 59(6): 737-746.
[马国柱, 符淙斌. 中国北方干旱区地表湿润状况的趋势分析. 气象学报, 2001, 59(6): 737-746.]
[3] Sun Anjian, Gao Bo. A diagnostic analysis of serious flood/drought during summer season in the North China Plain. Chinese Journal of Atmospheric Sciences, 2000, 24(3): 393-402.
[孙安键, 高波. 华北平原地区夏季严重旱涝特征诊断分析. 大气科学, 2000, 24(3): 393-402.]
[4] Wu H, Hayes M J, Weiss Albert et al. An evaluation of the standardized precipitation index, the China-Z index and the statistical Z-Score. International Journal of Climatology, 2001, 21: 745-758.
[5] Li Qingxiang, Liu Xiaoning, Li Xiaoquan. Drought trend in North China in recent half century. Journal of Natural Disasters, 2002, 11(3): 50-56.
[李庆祥, 刘小宁, 李小泉. 近半世纪华北干旱化趋势研究. 自然灾害学报, 2002, 11(3): 50-56.]
/
〈 |
|
〉 |