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地理科学  2011 

三江平原挠力河上游径流演变趋势及其驱动因素

, PP. 952-957

Keywords: 挠力河流域,径流,Mann-Kendall检验,IHACRES模型

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Abstract:

利用Mann-Kendall检验法分析三江平原挠力河上游径流在1956~2002年间的演变趋势,结果表明,径流在1966年发生突变,将流域径流分为1956~1966年和1967~2002年两个阶段。应用统计方法分析气候要素和人类活动对径流减少的影响并借助IHACRES模型将影响量化,研究结果表明,在第一阶段,气候要素是导致径流减少的主要原因;在第二阶段,人类活动为主要原因,并且31%的年份径流较基准期减少50%以上,25%的年份径流较基准期减少30%~50%,25%的年份径流较基准期减少10%~30%。

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