Characteristics of Precipitation and Soil Erosion From 1995 to 2010 in Guanchuan River Basin

您当前的位置：

首页 >

文章列表页 >

Characteristics of Precipitation and Soil Erosion From 1995 to 2010 in Guanchuan River Basin

- Characteristics of Precipitation and Soil Erosion From 1995 to 2010 in Guanchuan River Basin
- Bulletin of Soiland Water Conservation Vol. 32, Issue 6, Pages: 84-87(2013)
- 作者机构：
  
  1. 中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京,100086
  2. 桂林理工大学旅游学院,广西,桂林,541004
  3. 定西水文水资源勘测局,甘肃,定西,743000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
移动端阅览
Characteristics of Precipitation and Soil Erosion From 1995 to 2010 in Guanchuan River Basin[J]. Bulletin of Soiland Water Conservation, 2013, 32(6): 84-87.
DOI：

Characteristics of Precipitation and Soil Erosion From 1995 to 2010 in Guanchuan River Basin[J]. Bulletin of Soiland Water Conservation, 2013, 32(6): 84-87. DOI：

摘要

依据定西关川河流域1995-2010年的水文站监测数据

分析了该地区降雨特征及其水土流失效应。结果表明:(1)流域降雨事件主要发生在5-9月

7-8月降雨量达到全年最高值

而侵蚀性降雨主要发生在7-8月15a间侵蚀性降雨日数占总降雨日数的9.53%侵蚀性降雨量占总降雨量的39.41%。(2)15a间共观测到1|123d降雨

降雨总量达4866.98mm多年平均降雨量304.19mm

年际变化趋势不明显

每年约10%的侵蚀性降雨事件造成土壤侵蚀。(3)河川径流量与输沙量呈极显著正相关关系(p<0.001)

二者均呈波动减少的趋势当表层土壤处于缺水状态时

降雨对土壤侵蚀的影响延迟。(4)由于影响土壤水蚀的因素错综复杂

降雨量、侵蚀性降雨量和降雨侵蚀力均不能独立反映流域土壤侵蚀过程。

Abstract

Based on field hydrological data from 1995 to 2010

the article analyzed the characteristics of precipitation and its effect on soil erosion in Uuanchuan River basin

Dingxi County

Uansu Province and concluded that:Firstly

most of the rainfall occurred from May to September

while erosive rainfall concentrated in July and August.Within the 15 years

erosive rainfall days accounted for 9.53%of annual rainy days and erosive precipitation accounted for 39.41%in total amounts.Secondly

about 1123 rainy days were observed during the 15 years with a total precipitation amount of 4866.98 mm and mean precipitation of 304.19 mm.No obvious trend was found during the 15 years.The proportion of days with erosive rainfall was about 10%annually.Thirdly

a strong positive relationship were found between river runoff and soil erosion(P<0.001)

both of which decreased over time.The precipitation effect on soil erosion delayed when soil was dry.Finally

because water erosion process is quite complex

rainfall amount

erosive rainfall amount

rainfall erosivity can not reflect soil erosion independently.

关键词

Keywords

references

Views

2140

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Evaluation of Comprehensive Development Level of Villages in South Middle Areas of Loess Plateau

Designed Sediment Discharge of Reservior Considering Soil and Water Conservation Benefit

Distribution Features of Soil Moisture on Slope in Loess Hilly Areas

On Optimized Design for Mechanized Terracing

Correlation Between Vegetation Coverage and Zoker Population Quantity

Related Author

LIU Hai-bin

WU Fa-qi

LIU Ren-yuan

LI Huai-en

WU Sheng-de

SUN Zhong-feng

ZHANG Xue-pei

ZHOU Fu-ming

Related Institution

College of Natural Resources and Environment, Northwest Science and Technology University of Agriculture and Forestry, Yangling

Xi’an University of Technology

Institute of Soil and Water Conservation, Yan’an

College of Soil and Water Conservation,Beijing Forest ry University

Gansu Institute of Soil and Water Conservation

⁰