水资源保护Issue(4)：52-61,10.DOI:10.3880/j.issn.10046933.2015.04.010
1990-2013年湖南四水入洞庭湖汛期径流量的变化规律
Variation law of runoff in flood seasons into Dongting Lake from Four Rivers in Hunan Province during 1990-2013
摘要
Abstract
According to the data of runoff of the Four Rivers(Xiangjiang River, Zishui River, Yuanjiang River, Lishui River) measured by main hydrological station during 1990—2013, we analyze the annual variation law of runoff in flood season of the Four River and conduct a gray correlation degree analysis over the distribution of indicators in the flood season and floods and droughts situation in Hunan Province with the methods of moving average, wavelet analysis, Mann-Kendall mutation test, non-uniformity coefficient and amplitude of variation, etc. The results indicate that: ( 1 ) the distribution of inter-annual flood season ’ s runoff into Dongting Lake from the Four Rivers was quite uneven, while the flood season’ s runoff into Dongting Lake presented a trend of decreasing in general.(2) For Xiangtan station and Taojiang station, the first main cycle was 6 years; for Taoyuan station and Shimen station, the first main cycle was 4 years.(3) At Taojiang station and Taoyuan station, mutations occurred in 2003 and 2004, respectively.For Xiangtan station and Shimen station, there had been no mutation.(4) During the flood season, the distribution of runoff into Dongting Lake from the Four Rivers was quite uneven, however, the runoff distribution tended to be even over time.The monthly runoff showed a decreasing trend with fluctuation.As a whole, the indicators from the four stations presented a decreasing trend.(5) The grey correlation degree of the runoff distribution characteristics index value of Four Rivers into Dongting Lake during the flood season and river basin’s flood and drought disasters was extremely high, reflecting the situation of the basin’ s flood and drought disasters.关键词
汛期径流量/水旱灾害/小波分析/Mann-Kendall/灰色关联度分析/湖南四水Key words
runoff in flood season/flood and drought disasters/wavelet analysis/Mann-Kendall/grey correlation degree analysis/Four Rivers in Hunan Province分类
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刘培亮,毛德华,周慧,邓晓磊..1990-2013年湖南四水入洞庭湖汛期径流量的变化规律[J].水资源保护,2015,(4):52-61,10.基金项目
教育部2012年高等学校博士学科点专项科研基金（20124306110009）；湖南省重点学科建设项目（2011－001）；湖南省自然科学基金重点项目 （）
