Controllability of Phosphorus Losses in Surface Runoff from Sloping Farmland Treated by Agricultural Practices

2017 ◽  
Vol 28 (5) ◽  
pp. 1704-1716 ◽  
Author(s):  
Qingwen Zhang ◽  
Shanghong Chen ◽  
Yuequn Dong ◽  
Dinghui Liu ◽  
Xiaojuan Yang ◽  
...  
Keyword(s):  
Surface Runoff ◽  
Agricultural Practices ◽  
Phosphorus Losses ◽  
Sloping Farmland

scholarly journals Impacts of Tile Drainage on Phosphorus Losses from Edge-of-Field Plots in the Lake Champlain Basin of New York

Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 328 ◽  
Author(s):  
Laura B. Klaiber ◽  
Stephen R. Kramer ◽  
Eric O. Young
Keyword(s):  
New York ◽  
Surface Runoff ◽  
Soluble Reactive Phosphorus ◽  
Tile Drainage ◽  
Total Runoff ◽  
Tile Drains ◽  
Reactive Phosphorus ◽  
Phosphorus Losses ◽  
Field Plots ◽  
Reduced Surface

Quantifying the influence of tile drainage on phosphorus (P) transport risk is important where eutrophication is a concern. The objective of this study was to compare P exports from tile-drained (TD) and undrained (UD) edge-of-field plots in northern New York. Four plots (46 by 23 m) were established with tile drainage and surface runoff collection during 2012–2013. Grass sod was terminated in fall 2013 and corn (Zea mays L.) for silage was grown in 2014 and 2015. Runoff, total phosphorus (TP), soluble reactive phosphorus (SRP), and total suspended solids (TSS) exports were measured from April 2014 through June 2015. Mean total runoff was 396% greater for TD, however, surface runoff for TD was reduced by 84% compared to UD. There was no difference in mean cumulative TP export, while SRP and TSS exports were 55% and 158% greater for UD, respectively. A three day rain/snowmelt event resulted in 61% and 84% of cumulative SRP exports for TD and UD, respectively, with over 100% greater TP, SRP and TSS exports for UD. Results indicate that tile drainage substantially reduced surface runoff, TSS and SRP exports while having no impact on TP exports, suggesting tile drains may not increase the overall P export risk.

scholarly journals Impacts of Agricultural Practices and Tourism Activities on the Sustainability of Telaga Warna and Telaga Pengilon Lakes, Dieng Plateau, Central Java

2018 ◽  
Vol 31 ◽  
pp. 08030 ◽  
Author(s):  
Sudarmadji ◽  
Hermin Pudjiastuti
Keyword(s):  
Land Use ◽  
Surface Runoff ◽  
Local Community ◽  
Agricultural Practices ◽  
Secondary Data ◽  
Agricultural Practice ◽  
Surrounding Area ◽  
Central Java ◽  
Plateau Central ◽  
Environment Sustainability

Telaga Warna and Telaga Pengilon are two volcanic lakes in the Dieng Plateau offer some unique phenomena which are interested for tourists to visit. Telaga Warna and Telaga Pengilon are located side by side in the Dieng Palteau. Those two lakes also have specific ecosystem which differ to other lakes. However as land use in the surrounding area is now gradually changing, the lake is now facing to environmental degradation. The land use in the surrounding area is for intensive agricultural which main crops are vegetable, especially potatoes. Meanwhile, the number of tourist visiting those two lakes is increasing; it may also give some impact to the lake environment. This research aims to study the impacts of agricultural practices and tourism activities to the lake environmental which lead to the environment sustainability of the lakes. The field survey was conducted to collect some data on lakes characteristics, agricultural and tourism activities. Some interviews to local people and tourists were also conducted. Some water and sediment samples were collected followed by laboratory analyses. Some secondary data from previous study was also collected. Data analysis was conducted based on qualitative and quantitative techniques. The study found that agricultural practices of potatoes plantation uses water from the Telaga Pengilon to irrigate the plant by pumping out the water using water pump and distributes the water over the plantation area. Agricultural practices lead to soil erosion, which contribute sediment to the lake carried by surface runoff. Therefore, the volume of lakes is gradually decreasing. The use of fertilizer in the agricultural practice contribute nutrient into the lake carried by surface runoff, leading to the eutrophication, due to the excess used of fertilizer. The study concludes that agricultural practices and tourism activities have some positive economic impacts to the local community, however it also give some adverse affects on the lakes, both quantitatively and qualitatively. The volume of lakes is gradually decreasing due to sedimentation. In the long term periods the lake may not be interesting object for tourism.

scholarly journals Effects of rainfall intensity on runoff and nutrient loss of gently sloping farmland in a karst area of SW China

PLoS ONE ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. e0246505
Author(s):  
Yiwen Yao ◽  
Quanhou Dai ◽  
Ruxue Gao ◽  
Yixian Gan ◽  
Xingsong Yi
Keyword(s):  
Surface Runoff ◽  
Rainfall Intensity ◽  
Simulation Method ◽  
Nutrient Loss ◽  
Rainfall Simulation ◽  
Karst Area ◽  
Nutrient Losses ◽  
Nutrient Runoff ◽  
Karst Areas ◽  
Sloping Farmland

Nutrient losses from sloping farmland in karst areas lead to the decline in land productivity and nonpoint source pollution. A specially tailored steel channel with an adjustable slope and underground hole fissures was used to simulate the microenvironment of the "dual structure" of the surface and underground of sloping farmland in a karst area. The artificial rainfall simulation method was used to explore the surface and underground runoff characteristics and nutrient losses from sloping farmland under different rainfall intensities. The effect of rainfall intensity on the nutrient loss of farmland on karst sloping land was clarified. The results showed that the surface was the main route of runoff and nutrient loss during the rainy season on sloping farmland in karst areas. The influence of rainfall intensity on the nutrients in surface runoff was more substantial than that on underground runoff nutrients. Nutrient loss was more likely to occur underground than on the surface. The losses of total nitrogen, total phosphorus, and total potassium in surface and underground runoff initially increased and then gradually stabilized with the extension of rainfall duration and increased with increasing rainfall intensity and the amount of nutrient runoff. The output of nutrients through surface runoff accounted for a high proportion of the total, and underground runoff was responsible for a low proportion. Although the amount of nutrients output by underground runoff was small, it could directly cause groundwater pollution. The research results provide a theoretical reference for controlling land source pollution from sloping farming in karst areas.

Modelling nitrate from agriculture into public water supplies

1990 ◽  
Vol 329 (1255) ◽  
pp. 403-410 ◽  
Keyword(s):  
Surface Runoff ◽  
Agricultural Practices ◽  
River System ◽  
Application Rate ◽  
Point Sources ◽  
Soil Zone ◽  
Main River ◽  
Aquifer Systems ◽  
Fertilizer Application Rate ◽  
Wide Range

A wide range of models and techniques are briefly reviewed within the context of the Thames nitrates study in which models were developed to assess impacts of agricultural practices on nitrate levels in the river system. Here a semi-distributed approach was adopted in which a series of component models was developed to simulate hydrological and chemical behaviour of the Thames River basin. These components included: ( a ) a daily hydrological model for the Thames basin, which included 17 tributary sub-catchments and several major aquifer systems. The model provided input flows such as tributaries, groundwater, surface runoff, effluent returns as well as abstraction flows; ( b ) a soil zone and aquifer model for calculating the nitrate concentrations of surface runoff and groundwater given a particular land-use and fertilizer application rate; ( c ) An integrated model of flow and water quality for the main river, which provided a mass balance along 22 reaches of the main river, allowed for denitrification processes and incorporated all inputs from the non-point sources derived by ( a ) and ( b ) above. Model results will be presented together with an assessment of the major problems of nitrate modelling and predictions, which occur within the hydrologically active soil zone.

Modeling Phosphorus Losses through Surface Runoff and Subsurface Drainage Using ICECREAM

2018 ◽  
Vol 47 (2) ◽  
pp. 203-211 ◽  
Author(s):  
Hongkai Qi ◽  
Zhiming Qi ◽  
T. Q. Zhang ◽  
C. S. Tan ◽  
Debasis Sadhukhan
Keyword(s):  
Surface Runoff ◽  
Subsurface Drainage ◽  
Phosphorus Losses

Effects of Near-Surface Hydraulic Gradients on Nitrate and Phosphorus Losses in Surface Runoff

2004 ◽  
Vol 33 (6) ◽  
pp. 2174-2182 ◽  
Author(s):  
Fen-Li Zheng ◽  
Chi-Hua Huang ◽  
L. Darrell Norton
Keyword(s):  
Surface Runoff ◽  
Near Surface ◽  
Hydraulic Gradients ◽  
Phosphorus Losses
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