| 全球变化下秦岭南北河流径流泥沙比较分析 |
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| 引用本文： | 查小春,延军平.全球变化下秦岭南北河流径流泥沙比较分析[J].地理科学,2002,22(4):403-407. |
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| 作者姓名： | 查小春 延军平 |
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| 作者单位： | 陕西师范大学旅游与环境学院,陕西,西安,710062 |
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| 基金项目： | 国家自然科学基金资助项目 (4 0 0 710 5 )，陕西省自然科学基金资助项目 (99D0 1) |
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| 摘 要： | 分析比较秦岭南侧汉江和秦岭北侧渭河河流径流，泥沙含量变化表明，1935－1999年65年间，渭河河流年均流量为248．26m^3/s，汉江河流年均流量为592．94m^3/s，汉江年均流量是渭河的2．4倍，江汉河流年均含沙量为0．88kg/m^3，渭河河流年均含沙量为52．03kg/m^3，接近汉江河流的60倍，渭河是一条多泥沙河流，分析20世纪80年代以后汉江，渭河河流径流泥沙含量表明，渭河河流年均流量为195．89m^3/s，汉江河流年均流量为585．05m^3/s，均比1935－1980年减少了27．4％和1．9％，但汉江河流年均泥沙含量为0．41kg/m^3，渭河河流年均泥沙含量却为54．58kg/m^3，为汉江河流133倍，比1935－1980年增加了90多倍，说明全球变化对秦岭山脉南北地质水文气候环境影响很大，秦岭南北两区在全球气候变化中表现出明显的区域响应性。
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| 关 键 词： | 全球变化 秦岭 汉江 渭江 径流 泥沙 气候变化 |
| 文章编号： | 1000-0690(2002)04-0403-05 |
Comparison of Runoff and Sediment between Southern and Northern Rivers to Qinling Mountains under Global Change |
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| ZHA Xiao chun,YAN Jun ping.Comparison of Runoff and Sediment between Southern and Northern Rivers to Qinling Mountains under Global Change[J].Scientia Geographica Sinica,2002,22(4):403-407. |
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| Authors: | ZHA Xiao chun YAN Jun ping |
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| Abstract: | The span of Qinling Mountains affected the geograply and climate between the southern and northern areas to it. And under the influence of the global change, the Qinling Mountains has more affected the runoff and sediment between the southern and northern rivers. Based on long time observed data about the Hanjiang River and the Weihe River from 1935 to 1999, the change of runoff and sediment were analyzed. The result showed that the annual average runoff of the Hanjiang River and the Weihe River were 592.94 m 3/s and 248.26 m 3/s respectively from 1935 to 1999, the former was 2.4 times to the latter, but the annual average sediment of the Hanjiang River and the Weihe River were 0.88 kg/m 3 and 52.03 kg/m 3 respectively, the latter was 60 times approximately of the latter. The Weihe River has more sediment. Then the runoff and sediment of the Hanjiang River and the Weihe River were analyzed from 1981, the result showed that the annual average runoff of the Hanjiang River and the Weihe River were 585.05m 3/s and 195.89m 3/s respectively, which decreased 27.4% and 1.9% respectively. But the annual average sediment of the Weihe River was 54.85 kg/m 3, which increased 4.90% compared to that from 1935 to 1980, and the annual average sediment of the Hanjiang River was 0.41 kg/m 3, which decreased 53.41% Compared to that from 1935 to 1980. So from 1981, the annual average runoff of the Hanjiang River and the Weihe River decreased, but the annual average sediment in the Weihe River increased and the Hanjiang River decreased under global climate warming, the former was 133 times of the later. This showed that the climate environment of southern and northern areas to Qinling Mountains responded to the global climate warming. |
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| Keywords: | global change Qinling Mountains Hanjiang River Weihe River runoff and sediment |
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