| VARIATION IN FLOW AND SEDIMENT OF DASHA RIVER AND INFLUENCE OF HUMAN ACTIVITIES ON IT IN SOUTHWEST REGION OF ANHUI PROVINCE |
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| 作者姓名： | CHEN Bao-ping ZHANG Jian-chun |
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| 作者单位： | 1. State Key Laboratory of Estuarine and Coastal Research，East China Normal University，Shanghai 200062，P. R. China; 2. Department of Geography，Chizhou Teachers College of Anhui Province，Chizhou 247000，P. R. China; 3. School of Humanities，Hangzhou Teachers College，Hangzhou 310036，P. R. China |
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| 基金项目： | Under the auspices of the Natural Science Foundation of Anhui Education Office (No. 2006KJ161C), Special FundProject of Anhui Provincial Irrigation Office (No. 2001-11) |
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| 摘 要： | 1INTRODUCTION Soil and water loss in the Dabie mountainous area is one of the most severe environmental problems in Anhui Province and the Changjiang (Yangtze) River basin as well.Itnotonlyresultsinenvironmentaldegradation,but alsorestrictstheproductionoflocalindustryand agricul- ture and hinders the sustainable economic and social de- velopment of the area, which has done great harm to the people's life and production there (XU, 2000; ZHANG and SHI, 2001). Since the 1980s, especial…
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| 关 键 词： | 河流 沉积物 人为影响 安徽 泥沙运动 |
| 文章编号： | 1002-0063（2006）02-0109-07 |
| 收稿时间： | 2005-12-19 |
Variation in flow and sediment of Dasha River and influence of human activities on it in southwest region of Anhui province |
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| CHEN Bao-ping ZHANG Jian-chun.VARIATION IN FLOW AND SEDIMENT OF DASHA RIVER AND INFLUENCE OF HUMAN ACTIVITIES ON IT IN SOUTHWEST REGION OF ANHUI PROVINCE[J].Chinese Geographical Science,2006,16(2):109-115. |
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| Authors: | Bao-ping Chen Jian-chun Zhang |
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| Affiliation: | (1) Centre for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bangalore, 560 012, India |
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| Abstract: | Soil and water loss is now a major environmental problem in many areas of China, especially in the area of the Dabie Mountain, Anhui Province, which results in environmental degradation and does harm to the people's life and production there. Based on the observational records from the Dasha River, the authors analyze the character of the variation in flow and sediment in different flood and dry seasons from 1970 to 2000. The result shows that human activities had significantly reduced the sediment discharge and sediment module, and increased the runoff in low-water seasons since the 1980s. The average contribution rate of human activities to decreasing sediment was 65.67%, and at the same period the contribution rate of runoff and rainfall was about 34.33%. Therefore, it is necessary to take the biological and engineering measures to solve the problem of soil and water loss in the Dasha River watershed. |
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| Keywords: | river flow sediment discharge human activities effect Dasha River southwest of Anhui Province |
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