地理科学 ›› 2018, Vol. 38 ›› Issue (10): 1731-1739.doi: 10.13249/j.cnki.sgs.2018.10.018
• • 上一篇
收稿日期:
2017-09-07
修回日期:
2017-12-30
出版日期:
2018-12-12
发布日期:
2018-12-12
作者简介:
作者简介:吴燕锋(1986-),男,河南沈丘人,博士研究生,主要从事湿地生态水文、水文与水资源方面研究。E-mail:
基金资助:
Yanfeng Wu1,2(), Guangxin Zhang1(
)
Received:
2017-09-07
Revised:
2017-12-30
Online:
2018-12-12
Published:
2018-12-12
Supported by:
摘要:
采用标准化降水蒸散指数和径流干旱指数分析了1961~2010年研究区水文干旱和气象干旱时空演变特征,并探讨了水文干旱与气象干旱的关系。结果表明:① 1961~2010年松花江区呈总体干旱化且又有明显时段性的特征,其中1967~1983年和1996~2010年气象干旱频发、覆盖范围广、持续时间长且强度大;其它时段气象干旱少有发生。其次,气象干旱空间分布差异明显,东部的平均干旱频次和强度都大于西部地区,中部(嫩江流域中下游)平均干旱持续时间最长;但在嫩江流域和黑龙江上游地区干旱略有减弱趋势。② 松花江流域和挠力河流域水文干旱呈加剧的趋势,尤其是近15 a干旱化趋势明显;挠力河流域干旱频发、强度大且持续时间很长。松花江流域水文干旱程度弱于挠力河流域,但极端水文干旱事件频发。 ③ 松花江区气象干旱与水文干旱密切相关,嫩江流域水文干旱滞后于气象干旱2个月,而第二松花江流域和松花江流域水文干旱滞后于气象干旱3个月;挠力河流域水文干旱与气象干旱无明显的时滞相关性。
中图分类号:
吴燕锋, 章光新. 松花江区气象水文干旱演变特征[J]. 地理科学, 2018, 38(10): 1731-1739.
Yanfeng Wu, Guangxin Zhang. Spatio-temporal Patterns of Meteorological and Hydrological Drought in the Songhua River Area from 1961 to 2010[J]. SCIENTIA GEOGRAPHICA SINICA, 2018, 38(10): 1731-1739.
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