%0 Journal Article
%T 珠江流域降雨结构时空演变特征研究<br>Spatial-Temporal Changes of Precipitation Structure across the Pearl River Basin, China
%A 彭俊台
%A 张强
%A 陈晓宏
%J Journal of Water Resources Research
%P 94-102
%@ 2166-5982
%D 2012
%I Hans Publishing
%R 10.12677/JWRR.2012.13014
%X <span style=\"font-family:宋体;font-size:10pt;\">本文利用珠江流域</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">42</span><span style=\"font-family:宋体;font-size:10pt;\">个站点</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">1960~2005</span><span style=\"font-family:宋体;font-size:10pt;\">年</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">46</span><span style=\"font-family:宋体;font-size:10pt;\">年的日降雨资料，分析了年降雨总量</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">(</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">ATP</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">)</span><span style=\"font-family:宋体;font-size:10pt;\">、年降雨总天数</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">(</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">ATD</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">)</span><span style=\"font-family:宋体;font-size:10pt;\">、年降雨强度</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">(</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">ATI</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">)</span><span style=\"font-family:宋体;font-size:10pt;\">、年平均降雨历时</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">(</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">MWP</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">)</span><span style=\"font-family:宋体;font-size:10pt;\">以及各降雨历时的发生率和贡献率等降水指标，探讨了各种不同历时降雨的时空演变特征，并运用了改进</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">Mann-Kendall</span><span style=\"font-family:宋体;font-size:10pt;\">法检验了降雨序列变化的显著性。研究结果表明：</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">1) </span><span style=\"font-family:宋体;font-size:10pt;\">珠江流域上游和中部地区降雨量呈现减少趋势，降雨天数在整个流域范围内呈现减少趋势，由此，流域的降雨强度总体上呈现上升趋势，特别是流域的中部和东部地区；</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">2) </span><span style=\"font-family:宋体;font-size:10pt;\">流域短历时降雨</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">(</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">2~5 d</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\">)</span><span style=\"font-family:宋体;font-size:10pt;\">的发生率较高，且占总降雨量的比重较大，表明易于出现集中性的降雨，而长历时降雨则出现下降趋势；</span><span style=\"font-family:'Times
%K 降雨结构；降雨历时；降雨强度；水文循环；珠江流域<br>Precipitation Structure
%K Precipitation Duration
%K Precipitation Intensity
%K Hydrologic Cycle
%K Pearl River Basin
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=717