کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8953502 | 1645939 | 2019 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Response of soil detachment rate by raindrop-affected sediment-laden sheet flow to sediment load and hydraulic parameters within a detachment-limited sheet erosion system on steep slopes on Loess Plateau, China
ترجمه فارسی عنوان
واکنش میزان انهدام خاک توسط جریان رسوب باران تحت تأثیر باران به بار رسوب و پارامترهای هیدرولیکی در یک سیستم فرسایش ورقه ورق محدود در دامنه های شیب دار در لس لاتین، چین
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کلمات کلیدی
میزان انحلال خاک، جریان ورق، بار رسوب، پارامترهای هیدرولیک، انهدام محدود دامنه های شیب دار،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
The response of soil detachment rate by raindrop-affected sediment-laden sheet flow to sediment load and hydraulic parameters was investigated within a detachment-limited sheet erosion system on steep slopes to understand sheet erosion processes fully and derive an accurate experimental model. An experiment was conducted at slopes of 12.23%, 17.63%, 26.8%, 36.4%, 40.4% and 46.63% under rainfall intensities of 48, 60, 90, 120, 138 and 150â¯mm hâ1, respectively, by using simulated rainfall. Results showed that the soil detachment rate by raindrop-affected sediment-laden sheet flow decreased as the sediment load by sheet flow increased, and the decrease was a power function of sediment load by sheet flow with NSEâ¯=â¯0.58, MSEâ¯=â¯0.0099 and R2â¯=â¯0.58. In addition, the soil detachment rate by raindrop-affected sediment-laden sheet flow increased as a linear function of shear stress, stream power and unit stream power. Shear stress and stream power could be used to predict the soil detachment rate by raindrop-affected sediment-laden sheet flow accurately through a linear equation. Stream power (R2â¯=â¯0.87, MSE = 0.003 and NSE = 0.87) was a better predictor of soil detachment rate by raindrop-affected sediment-laden sheet flow than shear stress (NSEâ¯=â¯0.83, MSE = 0.004 and R2â¯=â¯0.83). However, prediction based on unit stream power (NSEâ¯=â¯0.43, MSE = 0.01 and R2â¯=â¯0.43) was poor. These findings can improve our understanding and modelling of sheet erosion processes on steep slopes in the loess region of China.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil and Tillage Research - Volume 185, January 2019, Pages 9-16
Journal: Soil and Tillage Research - Volume 185, January 2019, Pages 9-16
نویسندگان
Bing Wu, Zhan-li Wang, Qing-Wei Zhang, Nan Shen, June Liu,