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Hydrologic response to climate change and human activities in a subtropical coastal watershed of southeast China

机译：中国东南亚热带沿海流域对气候变化和人类活动的水文响应

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摘要

It is essential to investigate hydrologic responses to climate change and human activities across different physiographic regions so as to formulate sound strategies for water resource management. Mann-Kendall, wavelet and geospatial analyses were coupled in this study, associated with ENSO indicators, flashiness index and baseflow index, in order to explore the hydrologic sensitivity to climate change and human activities in the Jiulong River Basin (JRB), a subtropical coastal watershed of southeast China. The results showed that the average annual precipitation presented an increasing trend (Z = 2.263, p = 0.024) and that this tendency has become weaker from estuary to inland in the JRB over the past 50 years. The annual frequency of rainstorm events increased from 3.4 to 5.2 days in the estuary and from 5.1 to 5.6 days in the West River, whereas it decreased from 6.0 to 5.5 days in the North River from 1954 to 2010. The 10-year average streamflow during 2001-2010 in the North River and West River decreased by 9.2 and 6.7 %, respectively, compared to the average annual streamflow during 1967-2000. Annual fluctuations were the most representative signals in streamflow variability for the North River and West River over the period 1967-2010. Human activities including dam construction, land change and socioeconomic development posed increasing influences on hydrologic conditions in the JRB. Seasonal variability of streamflow and sediment discharge changed significantly between the two periods divided by the jumping point (1992), identified when dams were constructed extensively in the North River and West River. This research provided important insights into the hydro-logic consequences of climate change and human activities in a subtropical coastal watershed of southeast China.
机译：必须研究跨不同自然地理区域对气候变化和人类活动的水文响应，以制定合理的水资源管理策略。这项研究结合了Mann-Kendall，小波分析和地理空间分析，并与ENSO指标，泛度指数和基流指数相关联，以探索副热带沿海九龙江流域（JRB）的水文敏感性对气候变化和人类活动的敏感性中国东南部的分水岭。结果表明，在过去的50年中，JRB从河口到内陆的年平均降水量呈增加趋势（Z = 2.263，p = 0.024），并且这种趋势已经减弱。从1954年到2010年，河口的暴雨年度频率从河口的3.4天增加到5.2天，西河从5.1天增加到5.6天，北河从1954年到2010年从6.0天减少到5.5天。与1967-2000年的年平均流量相比，北河和西河的2001-2010年分别减少了9.2％和6.7％。在1967-2010年期间，年波动是北河和西河水流变化的最具代表性的信号。大坝建设，土地变化和社会经济发展等人类活动对JRB的水文条件造成了越来越大的影响。在两个时期之间，除以跳跃点（1992年）时，溪流和泥沙排放的季节性变化显着变化，这是在北河和西河广泛修建水坝时确定的。这项研究为中国东南亚热带沿海流域气候变化和人类活动的水文后果提供了重要的见识。

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  • 来源
    《Regional Environmental Change》 |2013年第6期|1195-1210|共16页
  • 作者

    Jinliang Huang; Zhenyu Zhang; Yuan Feng; Huasheng Hong;

  • 作者单位

    Coastal and Ocean Management Institute, Xiamen University, Xiamen 361005, China,Fujian Provincial Key Laboratory of Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361005, China;

    Coastal and Ocean Management Institute, Xiamen University, Xiamen 361005, China,Fujian Provincial Key Laboratory of Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361005, China;

    Fujian Provincial Key Laboratory of Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361005, China;

    Coastal and Ocean Management Institute, Xiamen University, Xiamen 361005, China,Fujian Provincial Key Laboratory of Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361005, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Climate variability; Precipitation; Streamflow; Human activities; Jiulong River Basin;

    机译：气候多变性;沉淀;水流;人类活动;九龙江流域;

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