Estimating and Testing on Collectable Rainwater in Watersheds of Upper Stream of Qingshui River

GUO Xiao-nan; Wang Xiu-ru; LIU Lan-mei

doi:10.13961/j.cnki.stbctb.2014.05.045

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Estimating and Testing on Collectable Rainwater in Watersheds of Upper Stream of Qingshui River

- Estimating and Testing on Collectable Rainwater in Watersheds of Upper Stream of Qingshui River
- Bulletin of Soiland Water Conservation Vol. 33, Issue 5, Pages: 208-212(2014)
- 作者机构：
  
  北京林业大学水土保持学院,北京,100083
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.05.045
  CLC：
- Published：2014
- 稿件说明：
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GUO Xiao-nan, Wang Xiu-ru, LIU Lan-mei. Estimating and Testing on Collectable Rainwater in Watersheds of Upper Stream of Qingshui River[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 208-212.
DOI：

GUO Xiao-nan, Wang Xiu-ru, LIU Lan-mei. Estimating and Testing on Collectable Rainwater in Watersheds of Upper Stream of Qingshui River[J]. Bulletin of Soiland Water Conservation, 2014, 33(5): 208-212. DOI： 10.13961/j.cnki.stbctb.2014.05.045.

摘要

以北京市西部山区典型流域——清水河上游流域为例

采用地理信息系统(GIS)和SCS(Soil Conservation Service)相结合的方法

估算了该流域不同土地利用类型在不同水文年6-8月可收集雨水资源量;并选取2008-2009年6-8月10场降雨的实测径流量数据

与SCS-CN模型计算的径流量进行误差分析

用来检验SCS-CN模型的精确度。结果表明:(1)研究区枯水年(p=75%)

平水年(p=50%)

丰水年(p=25%)6-8月可收集雨水资源量分别为7.16×10

1.04×10

5.71×10

占全年的平均百分比为82.43%;(2)不同土地利用类型在平水年6-8月可收集雨水资源量占总量百分比分别为:草地和林地占86.13%

耕地和园地占4.87%

工矿仓储用地、住宅等其他土地利用类型占9%;(3)利用SCS-CN模型计算径流值与实测值相比

合格率达到90%。

Abstract

Taking upstream watershed of Qingshui river as an example

the typical watershed in western mountainous area of Beijing City

Geographic Information System(GIS) and SCS(Soil Conservation Service) were used to estimate the collectable rainwater resource of different land-use types from June to August in different hydrological frequency years

which are dry year

normal year

and wet year.In addition

the SCS-CN computed runoff data and the observed data which were selected from 10 times rainfall during June to August in 2008-2009

were used to analyze the errors and to test the accuracy of SCS-CN. The results showed that:(1) The collectable rainwater resource calculated from June to August in different hydrological frequency years were 7.16×107 m3

10.36×107 m3 and 5.71×107 m3

respectively

accounted for the average percentage of 82.43%;(2) The percentage which rainwater resource of different land-use type collected from June to August in normal year were as following:lawn and woodland accounted for 86.13%

farmland and garden plot accounted for 4.87%

industrial and mining warehouse land

residential and other land use types accounted for 9%

respectively;(3) Comparing the computed runoff data with observed data

the acceptability was 90%.

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references

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