Impact of Human Activities on Runoff and Sediment Change of Yanhe River Based on the Similar Precipitation Condition

WANG Qunxing; LI Rui; WANG Fei; Gao Peng

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Impact of Human Activities on Runoff and Sediment Change of Yanhe River Based on the Similar Precipitation Condition

- Impact of Human Activities on Runoff and Sediment Change of Yanhe River Based on the Similar Precipitation Condition
- Bulletin of Soiland Water Conservation Vol. 29, Issue 3, Pages: 16-20(2010)
- 作者机构：
  
  1. 西北农林科技大学资源环境学院, 陕西杨凌,712100
  2. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
- 作者简介：
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- Published：2010
- 稿件说明：
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WANG Qunxing, LI Rui, WANG Fei, et al. Impact of Human Activities on Runoff and Sediment Change of Yanhe River Based on the Similar Precipitation Condition[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 16-20.
DOI：

WANG Qunxing, LI Rui, WANG Fei, et al. Impact of Human Activities on Runoff and Sediment Change of Yanhe River Based on the Similar Precipitation Condition[J]. Bulletin of Soiland Water Conservation, 2010, 29(3): 16-20. DOI：

摘要

定量评价人类活动对河流径流和泥沙的影响是目前地学研究热点之一。由于河流水沙变化受人类活动和气候变化共同作用

降水是径流的来源和产沙输沙的主要动力。通过选择降水条件相似的年份

比较河流水沙差异

可以反映人类活动对水沙变化的作用大小。利用1952年到2001年延河甘谷驿水文站逐月径流量、输沙量实测值和流域逐月降水量实测资料

通过分析和确定年、汛期降水量和年内降水过程相似的年降水条件相似年组

比较相似年降水条件下径流量和输沙量的差异。分析表明

与1954—1963年相比

延河1969—1977年年和汛期径流量分别减少18.03%和32.52%

输沙量分别减少47.08%和47.52%;1981—1984年年和汛期径流量分别减少29.77%和46.29%

输沙量均减少73.46%;1988—1996年年和汛期径流量分别增加71.72%和97.79%

输沙量分别增加162.07%和161.88%。

Abstract

The impact of human activities on runoff and sediment change is one of the key topics worldwide.Runoff and sediment change is interactively affected by climate change and human activit ies. The impact of human activities on runoff and sediment change is analyzed based on the similar precipitation condition ( SPC)because precipitation is the source of runoff and the power of soil erosion and sediment delivery in the Yanhe River. In the paired??periods with SPC

the depth and process of precipitation are similar. A 50??year data series( 1952 - 2001) of annual precipitation in the basin and r unoff and sediment at Ganguyi Hydrology Station of the Yanhe River are analyzed. Results show that there are clear stages of runoff and sediment change influenced by human activities in the SPC. Compared with the period from 1954 to 1963

runoff in annual and flo od seasons from 1969 to 1977 is reduced by 18. 03% and 32. 52%

and sediment

by 47. 08% and 47. 52%

respectively; from 1981 to 1984

runoff is reduced by 29. 77% and 46. 29%

respectively

and sediment in bo th cases

by 73. 46% ; and from 1988 to 1996

runoff in annual and flood seasons is reduced by 71. 72% and 97. 79% and sediment

by 162. 07% and 161. 88%

respectively .

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