| Inhibitability of soil loss and sediment concentration during consecutive rainfalls from experimental plots treated by endemic microorganisms |
| |
| 作者姓名： | Seyed Hamidreza Sadeghi Masumeh Ashgevar Heydari Atefeh Jafarpoor |
| |
| 作者单位： | 1. Department of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University;2. Agrohydrology Research Group, Tarbiat Modares University |
| |
| 摘 要： | Consecutive rainfalls, due to changes in antecedent moisture, alter soil erosion processes, necessitating the implementation of suitable soil loss control methods. Biological soil microorganism approaches have been applied to control soil loss. However, information on the involvement of microorganisms in the soil loss and rill erosion processes has yet to be supplied. In this study, the individual and combined inoculation of cyanobacteria and bacteria was investigated during five consecutive rai...
|
| 收稿时间： | 23 June 2022 |
Inhibitability of soil loss and sediment concentration during consecutive rainfalls from experimental plots treated by endemic microorganisms |
| |
| Seyed Hamidreza Sadeghi,Masumeh Ashgevar Heydari,Atefeh Jafarpoor.Inhibitability of soil loss and sediment concentration during consecutive rainfalls from experimental plots treated by endemic microorganisms[J].International Journal of Sediment Research,2023,38(3):446-454. |
| |
| Institution: | 1. Department of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor 46417-76489, Iran;2. Agrohydrology Research Group, Tarbiat Modares University, Tehran 14115-336, Iran;1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;2. Key Laboratory of Hydrologic-Cycle and Hydrodynamic-System of Ministry of Water Resources, Hohai University, Nanjing 210098, China;3. Institute of Water Science and Technology, Hohai University, Nanjing 210098, China;1. EPROAD Research Unit, University of Picardie Jules Verne, IUT of Aisne, Saint Quentin, 02100, France;2. Hanoi University of Civil Engineering, Ha Noi, Viet Nam;1. Department of Nature Engineering, Faculty of Agriculture and Natural Resources, Ardakan University, Ardakan, Iran;2. Department of Watershed Management Engineering, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Tehran, Iran;3. Khamsan Representative and Paired Watershed, Sanandaj, Kurdistan, Iran;1. Ministry of Education Key Laboratory of Water and Sediment Science, School of Environment, Beijing Normal University, Beijing 100875, China;2. State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;1. Department of Water Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran;2. Department of Civil Engineering, Chandigarh University, Mohali, Punjab, India;3. School of Engineering, University of St. Thomas, Minnesota, 2115 Summit Avenue, St. Paul, MN 55105, USA;4. Department of Water Engineering, Faculty of Agriculture, Urmia University, Urmia, Nazlu, Iran;5. Department of Civil Engineering, Saeb University, Abhar, Iran |
| |
| Abstract: | Consecutive rainfalls, due to changes in antecedent moisture, alter soil erosion processes, necessitating the implementation of suitable soil loss control methods. Biological soil microorganism approaches have been applied to control soil loss. However, information on the involvement of microorganisms in the soil loss and rill erosion processes has yet to be supplied. In this study, the individual and combined inoculation of cyanobacteria and bacteria was investigated during five consecutive rainfalls with an interval of three days, an intensity of 50 mm/h, and a duration of 30 min. Also, additional runoff simulation of about 2.18 ± 0.32 L/min was done in mid-sized experimental plots (i.e., 6 m × 1 m × 0.5 m) induced by rill erosion. These experiments were done at the Rainfall and Soil Erosion Simulation Laboratory of the Faculty of Natural Resources, Tarbiat Modares University, Iran. Soil loss and sediment concentration were measured during five consecutive rainfalls in the study treatments and compared with the control treatment. Results showed that the highest soil loss of 30,810.70 g occurred at the control treatment in the first rainfall. In contrast, individual and combined inoculation treatments of cyanobacteria and bacteria with the secretion of polysaccharides and resulting stability of aggregates decreased soil loss significantly (p < 0.01) by 99.65%, 99.91%, and 100.00%, respectively, compared to the control treatment. In the combined treatment of cyanobacteria and bacteria, soil loss further decreased by 68.38%, 70.33%, and 7.27% for 2 through 4, respectively, events and increased by 19.96% in the fifth event, and sediment concentration also decreased by 68.88% and 59.86% for the second and third events, respectively and increased by 4.66% and 83.30% for the fourth and fifth events, respectively. The best performance was found in the combined inoculation in consecutive rainfalls (i.e., from the second to the fifth event), and the bacteria treatment and the combined treatment did not significantly differ in performance (p = 0.94). The cyanobacterial treatment had a significant effect only for the first rainfall compared to the bacteria treatment. Bacteria therapy is advised as a treatment for conserving soil and water resources in rill erosion-prone regions due to the time and cost necessary to create the biomass required. |
| |
| Keywords: | Biocrust Linear erosion Sediment accessibility Soil and water bio-management |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
