基于突变检验的黄河上游生态水文变异分析

发布时间：2018-04-26 15:22

本文选题：水文变异 + 水文生态指标　；参考：《中国农村水利水电》2016年10期

【摘要】：黄河上游梯级水库在发挥防洪减灾、发电、灌溉等作用的同时,使黄河上游河段生态水文特征发生了较大变化,给黄河生态环境健康带来了一定的负面影响。以黄河上游代表站点兰州站为例,使用TFPW-MK突变检验法和秩和检验法分析其水文序列的变异点位置,采用水文指标改变法(IHA)分析变异前后水文生态指标的变异范围。结果表明:兰州站水文序列在1985年发生了变异,且水文变异程度较高,各项生态指标不同程度发生了改变,造成了水文生态条件的恶化。其主要原因是人类活动的影响。
[Abstract]:The cascade reservoirs in the upper reaches of the Yellow River exert the functions of flood control and disaster reduction, electricity generation, irrigation and so on, at the same time, the ecological and hydrological characteristics of the upper reaches of the Yellow River have changed greatly, which has brought some negative effects to the ecological environment health of the Yellow River. Taking Lanzhou Station, a representative station in the upper reaches of the Yellow River, as an example, TFPW-MK mutation test and rank sum test were used to analyze the location of variation points of hydrological sequence, and hydrological index change method was used to analyze the variation range of hydroecological indexes before and after variation. The results show that the hydrological sequence of Lanzhou station changed in 1985, and the degree of hydrological variation was high, and the ecological indexes changed in different degrees, which resulted in the deterioration of hydrological and ecological conditions. The main reason is the influence of human activities.
【作者单位】：长安大学环境科学与工程学院;长安大学旱区地下水文与生态效应教育部重点实验室;
【基金】：国家杰出青年科学基金(41302253) 青海省应用基础研究计划(2014-ZJ-706) 中国地质调查局项目(12120113009000)
【分类号】：P333

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