[1]XIE Mengyao,REN Zongping,Li Zhanbin,et al.Characteristics of Runoff and Sediment Yield During Flood Events in a Small Watershed of the Pisha Sandstone Area[J].Research of Soil and Water Conservation,2020,27(05):45-49,58.
Copy
Characteristics of Runoff and Sediment Yield During Flood Events in a Small Watershed of the Pisha Sandstone Area
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 05
Page number:
45-49,58
Column:
目次
Public date:
2020-08-20
- Title:
- Characteristics of Runoff and Sediment Yield During Flood Events in a Small Watershed of the Pisha Sandstone Area
- Keywords:
- Flood events; runoff and sediment yield; sedimentary cycle; grain size distribution; Weibull distribution
- CLC:
- P333
- DOI:
- -
- Abstract:
- The Pisha Sandstone area in China is an erosion zone affected by multiple forces, with water erosion being the main erosion force as well as the transport carrier of erosion materials. In order to better understand the processes pertaining to regional water erosion in a region of intense erosion made of Pisha sandstone and frequently affected by floods, an analysis of the characteristics of the runoff and sediment yield in the Erlaohugou watershed was conducted during flood events in this study. In August 2018, we carried out sampling of erosion materials and two sedimentary cycles in the region. The precipitation, runoff and sediment data corresponding to sedimentary cycles were analyzed. Hereafter, the flood which the flood peak the 20180716 was chosen as the reference as NO.1, and the flood which the flood peak 20180719 was chosen as NO.2. The initial soil water content and the pattern of rainfalls are the two main factors that determine the starting time and the initial loss of the runoff. The runoff and sediment transport of NO.1 are 2.7 times and 3.4 times of the value corresponding to NO.2, respectively. The types of dominant sediment in the sedimentary cycles are medium sand, fine sand and silt, accounting for 70%. The siltation in the basin changed depending on changes of the flood conditions. Compared with the sedimentary cycle of NO.1, the particle size of the sedimentary cycle of flood NO.2 is coarsened. The proportion of clay, silt and extremely fine sand decreased, while the content of fine sand, medium sand and coarse sand increased. This study also considered the use of the Weibull distribution to establish theoretical distribution curve of the particle size distribution of the erosion materials(surface soil and bare Pisha Sandstone)in the Erlaohugou watershed. On the basis of this, the proportion of erosion materials in the sedimentary cycles is obtained by differential evolution according to the least square criterion, and it is found that Pisha Sandstones are the main erosion materials in the sedimentary cycles.
- References:
-
[1]王愿昌,吴永红,寇权,等.砒砂岩分布范围界定与类型区划分[J].中国水土保持科学,2007,5(1):14-18.
[2]Yang F S, Cao M M, Li H E, et al. Simulation of sediment retention effects of the single seabuckthorn flexible dam in the Pisha Sandstone area[J]. Ecological Engineering, 2013,52:228-237.
[3]Zhen Q, Zheng J, He H, et al. Effects of Pisha sandstone content on solute transport in a sandy soil[J]. Chemosphere, 2016,144:2214-2220.
[4]Yang F S, Bi C F, Cao M M, et al. Simulation of sediment retention effects of the double seabuckthorn plant flexible dams in the Pisha Sandstone area of China[J]. Ecological Engineering, 2014,71:21-31.
[5]许炯心.“十大孔兑”侵蚀产沙与风水两相作用及高含沙水流的关系[J].泥沙研究,2013(6):28-37.
[6]姚文艺,李长明,张攀,等.砒砂岩侵蚀机理研究与展望[J].人民黄河,2018,40(6):1-7.
[7]任宗萍,谢梦瑶,马勇勇,等.乌兰木伦河1960—2015年水沙周期性分析[J].水土保持研究,2018,25(6):78-82,97.
[8]慕星,张晓明.皇甫川流域水沙变化及驱动因素分析[J].干旱区研究,2013,30(5):933-939.
[9]苏涛,张兴昌,王仁君,等.植被覆盖对砒砂岩地区边坡侵蚀的减流减沙效益[J].水土保持学报,2015,29(3):98-101.
[10]杨方社,曹明明,李怀恩,等.沙棘柔性坝影响下砒砂岩沟道土壤水分空间变异分析[J].干旱区资源与环境,2013,27(7):161-167.
[11]谢毅文,李怀恩,李越,等.砒砂岩区植物拦沙作用导致泥沙筛分效应研究[J].水土保持通报,2012,32(6):22-25.
[12]张传才,秦奋,汪永新,等.流域地貌形态多尺度三维分形量化及尺度效应:以砒砂岩区二老虎沟为例[J].水土保持研究,2016,23(1):278-283.
[13]张传才,秦奋,张喜旺,等.水沙物理模型CASC2D-SED的DEM尺度效应发生机制[J].水文,2018,38(2):15-24.
[14]谢悦波.水信息技术[M].北京:中国水利水电出版社,2009.
[15]巫尚蔚,杨春和,张超,等.基于Weibull模型的细粒尾矿粒径分布[J].重庆大学学报,2016,39(3):1-12.
- Similar References:
Memo
-
Last Update:
2020-08-25