[1]ZHANG Wei,YANG Mingyi,ZHANG Fengbao,et al.Profile Distribution of Particle Size of Sediment at a Check Dam in a Small Watershed of the Loess Plateau[J].Research of Soil and Water Conservation,2015,22(02):17-21.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 02
Page number:
17-21
Column:
Public date:
2015-04-28
- Title:
-
Profile Distribution of Particle Size of Sediment at a Check Dam in a Small Watershed of the Loess Plateau
- Author(s):
-
ZHANG Wei1, YANG Mingyi1,2, ZHANG Fengbao1,2, ZHANG Jiaqiong1, ZHAO Tianyin1
-
1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China
-
- Keywords:
-
soil erosion; cycle of sedimentation; particle size; check dam; Loess Plateau
- CLC:
-
S157
- DOI:
-
-
- Abstract:
-
The sediment is an important medium for retrieval of the soil erosion characteristics, which indicates the important information about the environmental processes in relation to soil erosion and deposition. We analyzed the variation of the different components,percentages and the characteristics of particle sizes, which were sampled from a 11.66 m depth soil profile in the typical check dam on the Loess Plateau. The result showed that:1)the deposition sediment mainly contains coarse silt(0.25~1 mm) with the average content of 53.61%, and the coefficient of variation was minimum; 2) sand(0.25~1 mm) was found only in a few layers, indicating the heavy rain in watershed; 3) there was an accumulated cultivated layer at the depth of 0—67 cm in the profile, which had indicative role for special time; 4) there was a turning point(600 cm) in the profile, which can be used to measure the effect of the water and sediment conditions and channel gradient, and had an indicative role for the sediment erosion environment of check dam.