文献类型： 外文期刊
作者： Wang, Lei 1 ; Wang, Na 1 ; Zhang, Qing 1 ; Wu, Jiajun 2 ; Wang, Shilei 4 ; Pang, Min 1 ; Wang, Jifeng 5 ; Zhou, Chao 6 ; Han, Yehui 6 ; Yang, Zhixin 2 ; Jin, Liang 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr Resources & Environm, Beijing 100097, Peoples R China
2.Hebei Agr Univ, Coll Resources & Environm Sci, Key Lab Farmland Ecoenvironm Hebei Prov, State Key Lab North China Crop Improvement & Regul, Baoding 071001, Peoples R China
3.Shanxi Agr Univ, Coll Environm & Resource Sci, Taiyuan 030000, Peoples R China
4.Beijing Miyun Dist Soil & Water Conservat Workstat, Beijing 101500, Peoples R China
5.Beijing Gaoling Water Stn Miyun Dist Water Bur, Beijing 101500, Peoples R China
6.Heilongjiang Acad Agr Sci, Qiqihar Branch, Qiqihar 161000, Peoples R China
关键词： simulated rainfall; surface runoff; subsurface runoff; soil nitrogen; vegetation cover; slope; rainfall intensity
期刊名称：WATER （ 影响因子：3.4； 五年影响因子：3.5 ）
ISSN：
年卷期： 2024 年 16 卷 10 期
页码：
收录情况： SCI
摘要： To study the characteristics of nitrogen (N) loss on slopes, different vegetation (bare soil, alfalfa), slopes (5 degrees, 10 degrees, 15 degrees), and rainfall intensities (40, 60, 80 mm/h) were set as variable factors in simulated rainfall experiments. Surface runoff accounts for 60.38-96.16% of total runoff and most N loss (57.69-88.67% of NO3--N). Alfalfa can reduce average concentrations of N loss in runoff and reduce N loss in surface runoff by more than 48.29%, as well as subsurface runoff by 3.8%. Average N loss in subsurface runoff exceeds that of surface runoff. Rainfall intensity most affects N loss from surface runoff in bare soil conditions, and slope most affects N loss in subsurface runoff. Rainfall intensity in alfalfa treatments most influences runoff volume and N loss. The comprehensive effects of rainfall intensity, slope, and vegetation cover on the total loss of various forms of nitrogen in surface runoff can be described using a linear correlation equation, with a correlation coefficient between 0.84 and 0.91.
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