scholarly journals 15N isotope tracing of nitrogen runoff loss on red soil sloping uplands under simulated rainfall conditions  

2016 ◽  
Vol 62 (No. 9) ◽  
pp. 416-421 ◽  
Author(s):  
Zheng HJ ◽  
Zuo JC ◽  
Wang LY ◽  
Li YJ ◽  
Liao KT
Keyword(s):  
Red Soil ◽  
Simulated Rainfall ◽  
Isotope Tracing ◽  
Nitrogen Runoff ◽  
Nitrogen Runoff Loss

Nitrogen runoff under simulated rainfall from a sewage-amended lateritic red soil in Fujian, China

2012 ◽  
Vol 123 ◽  
pp. 35-42 ◽  
Author(s):  
Yan-Hui Chen ◽  
Ming-Kuang Wang ◽  
Guo Wang ◽  
Ming-Hua Chen ◽  
Dan Luo ◽  
...  
Keyword(s):  
Red Soil ◽  
Simulated Rainfall ◽  
Nitrogen Runoff

Transfer of heavy metals from compost to red soil and groundwater under simulated rainfall conditions

2010 ◽  
Vol 181 (1-3) ◽  
pp. 211-216 ◽  
Author(s):  
Guiqiu Chen ◽  
Guangming Zeng ◽  
Chunyan Du ◽  
Danlian Huang ◽  
Lin Tang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Red Soil ◽  
Simulated Rainfall

scholarly journals Effect of Groundcovers on Reducing Soil Erosion and Non-Point Source Pollution in Citrus Orchards on Red Soil Under Frequent Heavy Rainfall

2020 ◽  
Vol 12 (3) ◽  
pp. 1146 ◽  
Author(s):  
Nan Zhang ◽  
Qun Zhang ◽  
Yueqiao Li ◽  
Mansheng Zeng ◽  
Wan Li ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Point Source ◽  
Nitrogen Loss ◽  
Heavy Rain ◽  
Bare Soil ◽  
Red Soil ◽  
Simulated Rainfall ◽  
Point Source Pollution ◽  
Citrus Orchards ◽  
Non Point Source Pollution

Periods of consecutive days with heavy rain of high intensity are common in the red soil region of China, increasing unpredictable risks of soil erosion and non-point source pollution on sloping orchards. Grass cover, as a type of vegetation management, is useful for controlling soil erosion and pollution. However, the potential of different kinds of groundcover plants in combating soil erosion and non-point source pollution remains unclear under the rainfall conditions in this region of China. This study included 7 d of simulated rainfall applied to a set of six treatments: Bare soil control, natural grass, and four groundcover treatments, Trifolium repens, T. repens, and Lolium perenne, Vicia sativa and Festuca elata, Medicago polymorpha, and Cynodon dactylon. The effects of the treatments on runoff volume, and soil, nitrogen, and phosphorus losses were evaluated. The results indicated that greater soil erosion and non-point source pollution occurred over the first 3d of daily 1-h simulated rainfall events. Also, the beneficial effects of the groundcover plants were greater earlier in the 7-d period of daily heavy rain, particularly in reducing runoff and nitrogen loss on the second and third day. Compared with bare soil, all the groundcovers showed a reduction effect in varying degrees, among which T. repens treatment was more effective. T. repens treatment showed an overall reduction in runoff and soil loss by 25.5% and 91.5%, respectively, and total nitrogen, nitrate nitrogen, ammonia nitrogen and total phosphorus loss by 25.5%, 74.6%, 90.7%, and 81.8%, respectively. These findings indicated that single planting of perennial pasture T. repens with short stems is an effective management option to limit soil erosion and non-point source pollution in sloping citrus orchards of southern China.

scholarly journals Effect of Erosion on Productivity in Subtropical Red Soil Hilly Region: A Multi-Scale Spatio-Temporal Study by Simulated Rainfall

PLoS ONE ◽  
2013 ◽  
Vol 8 (10) ◽  
pp. e77838 ◽  
Author(s):  
Zhongwu Li ◽  
Jinquan Huang ◽  
Guangming Zeng ◽  
Xiaodong Nie ◽  
Wenming Ma ◽  
...  
Keyword(s):  
Red Soil ◽  
Simulated Rainfall ◽  
Multi Scale ◽  
Temporal Study ◽  
Hilly Region ◽  
Spatio Temporal ◽  
Red Soil Hilly Region

scholarly journals Release of Heavy Metals and Metalloids from Two Contaminated Soils to Surface Runoff in Southern China: A Simulated-Rainfall Experiment

Water ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1339 ◽  
Author(s):  
Wei ◽  
Liu ◽  
Routh ◽  
Tang ◽  
Liu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Carbon ◽  
Contaminated Soils ◽  
Southern China ◽  
Red Soil ◽  
Simulated Rainfall ◽  
Metals And Metalloids ◽  
Heavy Metals And Metalloids ◽  
Acid Rainfall ◽  
Neutral Conditions

The release of heavy metals and metalloids (HMs), including Pb, Zn, Cd, As, and Cu, from two typical contaminated soils with different properties, namely red soil and limestone-dominated soil, was characterized through simulated-rainfall experiments in order to investigate the effects of soil properties on HM release. Significant differences in the HM concentrations between the two soils resulted in various concentrations of dissolved and particulate HMs in the runoff. Differences in the dissolved HM concentrations in the runoff were inconsistent with the HM concentrations in the soils, which is attributed to the variable solubilities of HMs in the two soils. However, the HM enrichment ratios were not significantly different. The strong correlation between dissolved organic carbon and dissolved HMs in the runoff, and between the total organic carbon and particulate HMs in sediments, were observed, especially in the limestone-dominated soil. The specific surface area and HM concentrations in sediments were weakly correlated. Acid-rainfall experiments showed that only the limestone-dominated soil buffered the effects of acid rain on the runoff; the concentrations of dissolved Pb, Zn, Cd, and Cu increased in the red soil under acid rainfall and were 60, 29, 25, and 19 times higher, respectively, than under the neutral conditions. The results contribute to the understanding of HM behavior in the two typical soils in southern China, exposed to frequent storms that are often dominated by acid rainfall.

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