[1]HAN Peijiang,LI Weiping,YU Linghong,et al.Effects of Different Grazing Systems on Nitrogen and Phosphorus Losses Along the Rainfall Runoff[J].Research of Soil and Water Conservation,2016,23(01):8-12.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 01
Page number:
8-12
Column:
Public date:
2016-02-28
- Title:
-
Effects of Different Grazing Systems on Nitrogen and Phosphorus Losses Along the Rainfall Runoff
- Author(s):
-
HAN Peijiang1, LI Weiping1, YU Linghong1, GUI Manquan2, YANG Wenhuan1, YIN Zhenyu1, CHEN Ahui1, FAN Cairui3
-
1. School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China;
2. Hulun Lake National Nature Reserve Bureau, Hailar, Inner Mongolia 021000, China;
3. Inner Mongolia Agricultural University, Hohhot 010018, China
-
- Keywords:
-
different grazing system; nitrogen; phosphorus; soil and water loss; rainfall infiltration
- CLC:
-
S153.6;S157.1
- DOI:
-
-
- Abstract:
-
A rainfall simulator was used to determine the influence of the surface physical properties and vegetation types as well as three systems of grazing (light, heavy and no grazing) on the rainfall infiltration and runoff yield in pastures in the Kherlen basin of Hulun Buir. The results showed that, under three rainfall intensities: 20, 45, 65 mm/h, the runoff duration in the heavy grazing pasture was the shortest, while runoff duration in the no grazing pasture was the longest. The runoff volume and runoff coefficient showed a general trend: heavy grazing pasture > light grazing pasture > no grazing pasture. As the rainfall intensity increased in the three grassland grazing systems, the losses of nitrogen and phosphorus from these systems also increased. The levels of nitrogen and phosphorus in the initial rainfall runoff were quite high, and then declined gradually and tended to become stable with the increase of runoff duration. There was a significant binomial correlation between runoff volume and the levels of nitrogen and phosphorus in runoff.