Vol.37,No.5 Mar.,2017 http: / / www.ecologica.cn 基金项目:国家自然科学基金项目(31170420) ;中央高校基本科研业务费专项(2572014AA24) 收稿日期:2015• 10• 09; 网络出版日期:2016• 07• 13 * 通讯作者 Corresponding author.E•mail: mannefu@ 163.com DOI: 10.5846 / stxb201510092035 段亮亮,满秀玲,俞正祥,刘玉杰,朱宾宾.森林干扰对大兴安岭北部森林小流域径流情势的影响.生态学报,2017,37(5) :1421• 1430. Duan L L, Man X L, Yu Z X, Liu Y J, Zhu B B.The effects of forest disturbance on flow regimes of a small forested watershed in northern Daxing′anling, China.Acta Ecologica Sinica,2017,37(5) :1421• 1430. 森林干扰对大兴安岭北部森林小流域径流情势的影响 段亮亮,满秀玲 * ,俞正祥,刘玉杰,朱宾宾 东北林业大学, 哈尔滨 150040 摘要:为了解大兴安岭森林流域水文过程对森林干扰的响应,利用近配对流域方法,排除了气候变量的时空差异,对比研究了森 林干扰后大兴安岭北部典型森林小流域(<100 km 2) 洪峰径流(High flow) 和枯水径流(Low flow) 径流情势(Flow regimes) 的变化 趋势。 结果表明,森林干扰对枯水径流情势影响显著,与对照流域(小北沟流域) 相比,森林干扰(占流域总面积的 6.74%) 使老 沟河流域平均枯水径流流量降低了 26.58%,平均枯水径流变异系数值增加了 36.77%,并且差异达到极显著水平(P<0.01) 。 另 一方面,森林植被的干扰相对增加了森林小流域的洪峰流量、历时和变异性,但与对照流域相比差异均未达到统计显著水平,说 明小面积的森林植被干扰未能引起流域洪峰径流情势的显著变化。 进一步对配对流域的径流浮动系数(Flashiness Index) 的分 析发现,森林干扰显著增加了森林小流域的径流浮动性,研究时段内干扰流域的径流浮动系数为 0.078,是对照流域(0.057) 的 1.37 倍。 大兴安岭北部森林小流域的天然径流情势(Natural flow regimes) 对森林干扰比较敏感,在与水文循环联系紧密的区域
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