[1]LIU He-ping,YUAN Ai-ping,LU Bing-jun,et al.Study on Erosive Ranifall Standard of Beijing[J].Research of Soil and Water Conservation,2007,14(01):215-217,220.
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Study on Erosive Ranifall Standard of Beijing
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
14
Number of periods:
2007年01期
Page number:
215-217,220
Column:
Public date:
1900-01-01
- Title:
- Study on Erosive Ranifall Standard of Beijing
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- Rainfall is an important factor in causing soil erosion, and its ability to cause soil erosion is referred to as rainfall erosivity. Determination of a practical threshold for separating erosive and non-erosive rainfall events can reduce the amount of work necessary to calculate rainfall erosivty. In this study, 10 years rainfall and sediment data at Miyun water and soil conservation station in Beijing were used to analyze the effects of sample size on the threshold of erosive rainfall standard and determine erosive rainfall standard. The results showed that a sample of 7-year could satisfy the requirements of obtaining a stable erosive rainfall standard. Rainfall amount standard and 30-minute maximum rainfall intensity standard of erosive rainfall event were 18.9 mm and 17.8 mm/h, respectively. This result can serve the soil loss prediction and water and soil resource management in Beijing mountainous area.
- References:
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Last Update:
1900-01-01