Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Fronczyk, Joanna; Sieczka, Anna; Lech, Mariusz; Radziemska, Maja; Lechowicz, Zbigniew

doi:10.15244/pjoes/62340

Cited by 15 publications

(7 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, the NH 4 + -N migration distance in soil is very short. Large proportions of NH 4 + -N in the percolation water from paddy fields comes from the slow mineralization and decomposition of organic N in the subsoil rather than the slow migration of NH 4 + -N from fertilizers [23,33]. However, the current study found that the NH 4 + -N concentrations are clearly increased after fertilizer application in percolation water.…”

Section: Discussioncontrasting

confidence: 73%

Improving Water Productivity and Reducing Nutrient Losses by Controlled Irrigation and Drainage in Paddy Fields

Gao¹,

Yu²,

Wang³

et al. 2018

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Controlled irrigation and drainage (CID) has received considerable attention as a reliable management practice for improving water quality and water productivity in rice production. This study aimed to evaluate the effects of CID on water productivity, nitrogen, and phosphorus losses in paddy fields. Treatments include alternate wetting and drying (AWD; lower limit of irrigation to-200 mm and upper limit of ponding water depth after rainfall to 60 mm), CID-I (lower limit of irrigation to-200 mm and upper limit of ponding water depth after rainfall to 200 mm), and CID-II (lower limit of irrigation to-500 mm and upper limit of ponding water depth after rainfall to 200 mm). Results showed that CID reduced irrigation water without a significant impact on grain yields and increased the irrigation water productivity by 14.6-51.5% compared with AWD. However, the percolation of CID may be increased, especially in a wetting year. The application of CID-II by combining yield with irrigation water productivity could be suitable and beneficial to rice crops. The average total nitrogen (TN) and total phosphorus (TP) concentrations of CID presented similar values or were significantly increased relative to AWD, indicating that the significant decreases in nutrient loads under CID were primarily due to reductions in surface runoff rather than changes in concentration. Ammonium nitrogen (NH 4 +-N) concentrations were clearly increased after fertilizer application in percolation water. Compared with AWD, the NH 4 +-N, TN, and TP leaching losses of CID-I were increased. The nitrogen and phosphorus leaching losses of CID-II were significantly increased relative to AWD and CID-I because of high nutrient concentrations and severe preferential flow. Therefore, CID potentially increased nitrogen and phosphorus loading to groundwater

show abstract

Section: Discussioncontrasting

confidence: 73%

Improving Water Productivity and Reducing Nutrient Losses by Controlled Irrigation and Drainage in Paddy Fields

Gao¹,

Yu²,

Wang³

et al. 2018

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

show abstract

“…Alternating wetting and drying changes the anaerobic environment caused by continuous fl ooding and accelerates the nitrifi cation process, which improved the consumption of NH 4 + -N and expedite NO 3 --N loading to the groundwater [10]. On the other hand, th e retardation factor and dynamic adsorption capacity for NO 3 -are lower than those for NH 4 + ions, and the migration velocity of NH 4 + in the subsoil is very small [35]. Thus the average NH 4 + -N concentrations from CID and AWD treatments at four growth stages for two years are kept on lower and stable values than NO 3 --N concentrations, and the leaching losses of NH 4 + -N were not signifi cantly different in AWD and CID.…”

Section: Effects On N and P Losses In Subsurface Watermentioning

confidence: 99%

Impact of Alternate Drought and Flooding Stress on Water Use, and Nitrogen and Phosphorus Losses in a Paddy Field

Mei¹,

Yu²,

Shao³

et al. 2018

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Paddy is the most important grain crop in China. In addition, water is one of the most important components for sustainable paddy production, and the quantity of irrigation for paddy fi elds accounts for approximately 70% of its total agricultural water resource consumption [1]. However, water supply is limited because of serious regional and seasonal water shortages, and paddy production is impaired by increasing water shortage [2]. Meanwhile, China is the largest producer and consumer of synthetic fertilizers in the world. Fertilizer and pesticide overuse in order to achieve high paddy yields might result not only in poor grain yield but also low N use Pol. J. Environ. Stud. Vol. 27, No. 1 (2018), 345-355 AbstractAlternate drought and fl ooding stress has become more prevalent during paddy growth stages as a result of climate change, especially in southern China. This study aims to assess the effect of alternate drought and fl ooding stress on water use, and nitrogen (N) and phosphorus (P) losses in paddy fi elds. Two controlled irrigation and drainage (CID) managements (namely drought at the beginning of growth stages followed by fl ooding (CID-1), and fl ooding at the beginning of growth stages followed by drought (CID-2) and one alternated wetting and drying (AWD) management were designed in specially designed experimental tanks with three replications in 2015 and 2016. Results showed that CID increased effective irrigation quantities and rainwater storage ability with a signifi cant decrease in water use effi ciency compared with AWD. For surface water, CID-1 signifi cantly improved possible losses of nitrogen and phosphorus during the fertilizer application period over CID-2. For subsurface water, CID can signifi cantly reduce the leaching losses of nitrate N and P compared with AWD. Meanwhile, CID-1 signifi cantly inc reased the leaching losses of nitrate N at the former two growth stages compared to CID-2, yet no signifi cant difference was found for ammonia N and P. Therefore, the application of controlled irrigation and drainage -especially for CID-1 -was an effi cient method for obtaining high water quality and reducing eutrophication.

show abstract

“…It is possible that biological nitrogen fixation from decades of historical agriculture in our study area created an influx of ammonia to the groundwater system, comparable to the contaminant plume studied in Bohkle et al (2006), which was observed to be travelling at a much slower rate than groundwater velocities suggest. On the other hand, nitrate moves through groundwater 5-10 times faster than ammonia (Fronczyk et al 2016), which may explain why both legacy and current NO 3 models performed similarly and no one model was clearly selected by AIC.…”

Section: Temporal Scale: Land-use Legacy Effectsmentioning

confidence: 99%

The land-use legacy effect: Towards a mechanistic understanding of time-lagged water quality responses to land use/cover

Martin

Hayes

Kendall

et al. 2017

Science of The Total Environment

View full text Add to dashboard Cite

Numerous studies have linked land use/land cover (LULC) to aquatic ecosystem responses, however only a few have included the dynamics of changing LULC in their analysis. In this study, we explicitly recognize changing LULC by linking mechanistic groundwater flow and travel time models to a historical time series of LULC, creating a land-use legacy map. We then illustrate the utility of legacy maps to explore relationships between dynamic LULC and lake water chemistry. We tested two main concepts about mechanisms linking LULC and lake water chemistry: groundwater pathways are an important mechanism driving legacy effects; and, LULC over multiple spatial scales is more closely related to lake chemistry than LULC over a single spatial scale. We applied statistical models to twelve water chemistry variables, ranging from nutrients to relatively conservative ions, to better understand the roles of biogeochemical reactivity and solubility on connections between LULC and aquatic ecosystem response. Our study illustrates how different areas can have long groundwater pathways that represent different LULC than what can be seen on the landscape today. These groundwater pathways delay the arrival of nutrients and other water quality constituents, thus creating a legacy of historic land uses that eventually reaches surface water. We find that: 1) several water chemistry variables are best fit by legacy LULC while others have a stronger link to current LULC, and 2) single spatial scales of LULC analysis performed worse for most variables. Our novel combination of temporal and spatial scales was the best overall model fit for most variables, including SRP where this model explained 54% of the variation. We show that it is important to explicitly account for temporal and spatial context when linking LULC to ecosystem response.

show abstract

Transport of Nitrogen Compounds through Subsoils in Agricultural Areas: Column Tests

Cited by 15 publications

References 28 publications

Improving Water Productivity and Reducing Nutrient Losses by Controlled Irrigation and Drainage in Paddy Fields

Improving Water Productivity and Reducing Nutrient Losses by Controlled Irrigation and Drainage in Paddy Fields

Impact of Alternate Drought and Flooding Stress on Water Use, and Nitrogen and Phosphorus Losses in a Paddy Field

The land-use legacy effect: Towards a mechanistic understanding of time-lagged water quality responses to land use/cover

Contact Info

Product

Resources

About