| 定量分解气候变化与人类活动对季节径流变异的贡献率 |
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| 引用本文： | 魏晓婷,黄生志,黄强,王浩,李沛,刘东.定量分解气候变化与人类活动对季节径流变异的贡献率[J].水土保持学报,2019,33(6):182-189. |
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| 作者姓名： | 魏晓婷 黄生志 黄强 王浩 李沛 刘东 |
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| 作者单位： | 1. 西安理工大学西北旱区生态水利国家重点实验室, 西安 710048;2. 中国水利水电科学研究院流域水循环模拟与调控国家重点实验室, 北京 100038 |
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| 基金项目： | 国家自然科学基金项目（51709221）；陕西省水利科技计划项目（2017slkj-19，2015slkj-27） |
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| 摘 要： | 变化环境下径流序列可能发生变异。当前径流变异的贡献率分解研究多集中于年尺度,而对季节尺度的关注不足。以黄土高原典型流域——泾河流域为研究对象,应用小波分析方法揭示其季尺度径流序列的演变规律,采用有序聚类法和累积距平法对其径流序列进行变异诊断,最后采用累计斜率变化率比较法定量分解气候变化和人类活动对其四季径流变异的贡献率。结果表明:(1)泾河流域夏季和冬季径流的周期变化均在20世纪90年代左右有发生转变,均由小尺度周期变化转变为较大尺度周期变化;(2)春、夏、秋和冬季径流分别在1969年、1996年、1985年和1990年发生变异;(3)人类活动对春、夏、秋和冬季径流变异的贡献率分别为50.40%,89.69%,39.14%和84.59%,在夏季和冬季人类活动(主要是水土保持措施的不断深入)对泾河径流变异的贡献占主导地位,且干扰影响了径流的周期变化。
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| 关 键 词： | 季尺度 小波分析 变异诊断 归因分析 人类活动 气候变化 |
| 收稿时间： | 2019/6/9 0:00:00 |
Quantitative Decomposition of Contributions of Climate Change and Human Activities to Seasonal Runoff Variability |
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| WEI Xiaoting,HUANG Shengzhi,HUANG Qiang,WANG Hao,LI Pei,LIU Dong.Quantitative Decomposition of Contributions of Climate Change and Human Activities to Seasonal Runoff Variability[J].Journal of Soil and Water Conservation,2019,33(6):182-189. |
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| Authors: | WEI Xiaoting HUANG Shengzhi HUANG Qiang WANG Hao LI Pei LIU Dong |
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| Institution: | 1. State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi''an University of Technology, Xi''an 710048;2. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038 |
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| Abstract: | The abrupt change of runoff series may occur in the changing environment. At present, researches on the contributions of runoff variation mainly focus on the annual scale, but pay insufficient attention to the seasonal scale. In this paper, the typical watershed of the Loess Plateau, Jinghe River Basin, was taken as the research object. Firstly, the wavelet analysis method was used to reveal the evolution of seasonal runoff series. Then the order clustering method and cumulative anomaly method were used to diagnose the variation of runoff sequence. Finally, the contributions of climate change and human activities to the seasonal runoff variation were quantified by making a comparison of slope change ratio of the fitted beeline between year and accumulative quantity. Results showed that:(1) The period of summer and winter runoff shift from small scale to large scale after the 1990s; (2) Runoff variation occur in spring, summer, autumn, and winter in Jinghe river basin are 1969, 1996, 1985, and 1990, respectively; (3) The contribution rates of human activities to runoff variation in spring, summer, autumn, and winter are 50.40%, 89.69%, 39.14%, and 84.59%, respectively. The contribution of human activities (mainly soil and water conservation measures) to runoff variation was dominant in summer and winter, which mainly affected the periodic shift of runoff after the 1990s. |
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| Keywords: | seasonal scale wavelet analysis variation diagnosis attribution analysis human activities climate change |
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