摘要
河流生态水文特征是河流生态水文响应机制的外在表现,分析河流生态水文特征变化是建立河流生态水文指标体系的基础。文中应用Mann-Kendall等方法对黄河上游唐乃亥、兰州断面主要的生态水文特征进行系统分析。黄河上游生态水文系统中改变强烈的生态水文要素主要分布在径流要素的年际和年内变化、最大最小极值的大小及出现时间、大小洪水和变化率等方面。唐乃亥断面与兰州断面发生改变的生态水文特征有所不同,兰州断面径流受人类活动干扰明显。
River eco-hydrological characteristic is the outward manifestation of river eco-hydrological response system,and river eco-hydrological characteristic variation analysis is the basis of reservoir eco-operation. We systematically took a statistical analysis on the eco-hydrological characteristics on Tangnaihai and Lanzhou section on the upstream by Mann-Kendall method. The results showed that eco-hydrological factors with strongly alteration mainly include annual runoff,intra-annual distribution,the occurring time of the maximum and minimum flow,the large and small floods,flow change rate and so on. The eco-hydrological characteristics with strongly alteration on Tangnahai section are different from those on Lanzhou section where the runoff is disturbed seriously by human activities.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2010年第9期45-51,共7页
Journal of Arid Land Resources and Environment
基金
水利部公益性行业科研专项(200701019)资助
