| 1880年以来石羊河出山径流量重建与变化特征 |
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| 引用本文： | 侯迎,王乃昂,张学敏,路俊伟.1880年以来石羊河出山径流量重建与变化特征[J].地理科学,2011,31(11):1396-1402. |
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| 作者姓名： | 侯迎 王乃昂 张学敏 路俊伟 |
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| 作者单位： | 兰州大学资源环境学院 兰州大学干旱区水循环与水资源研究中心, 甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金(50879033); 国家基础科学人才培养基金项目(J1030519)共同资助 |
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| 摘 要： | 在石羊河上游山区采集流域树木年轮样芯,建立高分辨率宽度年表。分析年表、降水和径流量间的相关关系,在它们间良好相关性基础上,分别利用多元逐步回归和提取主分量再回归方法重建金塔河和西营河历史时期上年9月至当年8月年径流量序列,以逐一剔除和交叉检验验证回归方程的稳定性和可靠性。1880年以来,石羊河年径流量共经历了4个枯水阶段和3个丰水阶段,而枯水年与丰水年出现的概率大致相同,且远低于平水年出现的概率。用多窗谱分析径流量序列周期变化,发现在不同置信水平上,年径流量存在2.58、2.76、3.28、3.53、4.14和22.2 a的周期。
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| 关 键 词： | 石羊河 出山径流量 降水量 树木年轮 重建 |
| 收稿时间： | 2011-01-12 |
| 修稿时间： | 2011-03-15 |
Reconstruction of Runoff from Mountainous Watershed Since 1880 A.D. and Its Changing Characteristics in Shiyang River Basin |
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| HOU Ying,WANG Nai-ang,ZHANG Xue-min,LU Jun-wei.Reconstruction of Runoff from Mountainous Watershed Since 1880 A.D. and Its Changing Characteristics in Shiyang River Basin[J].Scientia Geographica Sinica,2011,31(11):1396-1402. |
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| Authors: | HOU Ying WANG Nai-ang ZHANG Xue-min LU Jun-wei |
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| Institution: | College of Earth and Environment Science, Center for Hydrologic Cycle and Water Resources in Arid Region, Lanzhou University, Lanzhou, Gansu 730000, China |
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| Abstract: | In the past few years,many serious ecological problems caused by the shortage of water resources,such as discontinuous surface runoff,dried lakes,lowered groundwater level,and deteriorated water quality had emerged in the Shiyang River Basin.But the hydrologic observation data were insufficient to understanding the extremes,and how hydrological variability may be changing in a warming world.Few high-resolution and long researches had been carried out in this region yet.Therefore,it's necessary to sample tre... |
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| Keywords: | Shiyang River runoff precipitation tree-ring reconstruction |
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