کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8055194 | 1519539 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temporal variation in soil detachment capacity by overland flow under four typical crops in the Loess Plateau of China
ترجمه فارسی عنوان
تنوع زمانی در ظرفیت انهدام خاک توسط جریان های زمینی تحت چهار محصول معمول در ورقه لس لاین چین
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
ظرفیت انهدام خاک، تغییرات زمانی، تثبیت خاک، رشد ریشه، شیوه های کشت و زرع،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
چکیده انگلیسی
Accurate estimation of the temporal variation in soil detachment capacity (Dc, kg mâ2 sâ1) by overland flow and its potential influencing factors is critical to predict rill erosion. However, detailed information on the temporal variation in Dc remains limited for the cultivated lands in the Loess Plateau of China. This study was conducted to investigate the temporal variations in soil detachment capacity by overland flow using undisturbed topsoil samples collected from four typical crops (maize, millet, soybean, and potato) and to further identify the potential factors causing these changes during one growing season from early April to late September in 2012 in the Loess Plateau of China. The results showed that the measured mean Dc was greatest for potato, followed by maize, soybean, and millet. Soil detachment capacity for each crop fluctuated significantly over time with a similar pattern of temporal variation. The temporal variations of soil detachment capacity were affected by tillage practices, soil consolidation, water-stable aggregates (WSA), and root growth. Soil detachment capacity of four crops could be estimated using flow shear stress, soil cohesion (SC), and root density (RD) (Nash-Sutcliffe model efficiency = 0.89). Further studies are needed to investigate the potential effects of root architecture on soil detachment capacity by overland flow under different conditions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosystems Engineering - Volume 122, June 2014, Pages 139-148
Journal: Biosystems Engineering - Volume 122, June 2014, Pages 139-148
نویسندگان
Yao-chuang Yu, Guang-hui Zhang, Ren Geng, Long Sun,