Particulate N and P exports from sugarcane growing watershed are more influenced by surface runoff than fertilization

Li, Yong; Are, Kayode Steven; Huang, Zhigang; Guo, Hao; Wei, Lanchao; Abegunrin, Toyin Peter; Gu, Minghong; Qin, Zhaohua

doi:10.1016/j.agee.2020.107087

Cited by 24 publications

(10 citation statements)

References 40 publications

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“…This is because TN and TP can be carried away by both a dissolved status in runoff and particulate status in sediment [29]. Significant correlations among runoff depth, SLR, and TN and TP losses were also found by Li et al [5]. For the runoff plots, both TN, and TP losses can be expressed by runoff depth in linear equations at the 0.001 significant level (Table 6).…”

Section: Discussionmentioning

confidence: 53%

“…Soil conservation measures are widely used in the world to control soil loss and to protect water quality and water resource use because they can reduce both on-site land degradation and off-site sediment siltation [1][2][3]. Thus, soil erosion can cause serious consequences for agricultural lands with low nutrient concentration as well as downstream water resource use and aquatic ecosystems [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China

Fang

2021

Water

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Total nitrogen (TN) and total phosphorous (TP) are the main pollutants affecting the water quality of the Miyun Reservoir, Beijing. However, few studies have been conducted on their responses to implemented soil conservation measures at a slope scale in northern China. To explore the impact of soil conservation measures on TN and TP losses, field monitored data from 18 runoff plots under natural rainfalls were used to analyze the changing characteristics of runoff, soil loss, and nutrient losses during 2014–2019. The results indicated that runoff, soil erosion, as well a TN and TP losses from the plots varied significantly, depending on land use and soil conservation measures. Bare plots suffered the highest soil, TN, and TP losses, followed by cultivated plots without soil conservation measures, cultivated plots with contour tillage, and other plots. Event-averaged runoff and soil loss rates ranged from 0 to 7.9 mm and from 0 to 444.4 t km−2 yr−1, and event-averaged TN and TP losses from cultivated plots were the highest, with values of 39.8 and 3.0 kg km−2, respectively. Bare and cultivated plots were the main sediment and nutrient sources. Among the cultivated plots, the terraced plot had the lowest soil and nutrient losses. The vegetated plots had insignificantly lower soil and nutrient losses. Most TN and TP were lost in particulate status from the plots, especially from the plots with soil conservation measures. Soil conservation measures can effectively prevent TN and TP losses. To guarantee water resource use, contour tillage is preferred for the bare and cultivated lands in the study region.

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Section: Discussionmentioning

confidence: 53%

Section: Introductionmentioning

confidence: 99%

The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China

Fang

2021

Water

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“…Schoumans & Chardon (2003) have concluded that biochemical changes of P and its degree of mobility in the soil determine the total amount of P loss. Li et al (2020) showed that the concentration of nitrogen (N) and P in the river is directly related to sediment concentration and rainfall. As minerals and organic fertilizers, N and P are essential elements for plant growth (Fan et al 2018;Mogollon et al 2018;Li et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Li et al (2020) showed that the concentration of nitrogen (N) and P in the river is directly related to sediment concentration and rainfall. As minerals and organic fertilizers, N and P are essential elements for plant growth (Fan et al 2018;Mogollon et al 2018;Li et al 2020). On the other hand, they are also critically harmful elements for water systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of precipitation and sediment concentration on the loss of nitrogen and phosphorus in the Pasikhan River

Ebrahimi

Asadi

Rahmani

et al. 2022

Journal of Water Supply: Research and Technology-Aqua

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Natural and anthropogenic factors influence the entry of pollutants into surface waters and their accumulation in aquatic ecosystems. This study aimed to investigate precipitation and sediment concentration on the outflow of different forms of phosphorus (P) and nitrogen (N) in three primary land-use types along the Pasikhan River, the biggest river entering the Anzali Wetland in the Southern Caspian sea. Water sampling was performed on a monthly basis during the time bracket of 2017–2018. Different forms of P including total, soluble, particulate, total reactive, and dissolved reactive, and total Kjeldahl N, soluble N, particulate N, and were determined in the water samples. Total phosphorus and total Kjeldahl nitrogen contents lay within the range of 2.2–4.7 and from 0.14 to 0.33 mg l−1, respectively, downstream of the river. The highest monthly outflow of P from the watershed at the Agriculture station was recorded in October. Substantial conformity was found between the monthly trends of and and the trend of precipitation. The results indicated that sediment load intensified after an increase in the rainfall rate, leading to elevated N and P concentrations in the river water, mainly as particulate phosphorus and soluble nitrogen. It can also be inferred from the result that the concentration of N and P is directly related to the sediment concentration increase due to the rainfall. Increasing levels of nutrients such as N and P in the Pasikhan River can cause eutrophication in the Anzali Wetland, which needs conservative measures for reducing these elements' dynamic in the watershed.

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“…Busico et al (2020) evaluated the Soil & Water Assessment Tool (SWAT) performance in a highly urbanized basin and reported short runoff times and increased peak flows. Surface runoff also carries significant roles and affects pollution transport and sedimentation at agricultural and forested watersheds (Korkanç, 2018; Li, Are, et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Effect of land use change on hydrology of forested watersheds

Dogan

Karpuzcu

2021

Ecohydrology

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Land use/cover changes (LUCCs) in megacities can be rapid and extensive and lead to unintended consequences in sustainable watershed management. The aim of this study was to investigate effects of LUCC on hydrological components using Soil & Water Assessment Tool (SWAT) model in Terkos Basin, Turkey. Four LUCC scenarios (deforestation, urbanization, decrease in agricultural land and expansion in agricultural land) were set up regarding possible future land use changes in the watershed. Surface runoff was the main hydrological component that was impacted by LUCCs. Urbanization and conversion into agricultural lands scenarios resulted in considerable increases in surface runoff. Annual change of surface runoff for urbanization and conversion into agricultural lands scenarios was over 45% when compared to the baseline scenario. More remarkable changes were seen in dry months among the scenarios. Controlling the overall response of the hydrological systems to LUCC depends on better understanding of surface runoff processes. LUCC scenarios were also assessed based on freshwater availability components blue water and green water. The average annual total blue water potential, annual total green water flow and average green water storage of studied sub‐basin were 537, 584 and 108 mm/year for the baseline scenario, respectively. The trends of the blue water flow and green water storage were similar for each scenario, in that they were closely related to precipitation. This study provides valuable insight into hydrological impacts of possible land use changes on forested watersheds.

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Particulate N and P exports from sugarcane growing watershed are more influenced by surface runoff than fertilization

Cited by 24 publications

References 40 publications

The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China

The Effect of Soil Conservation Measures on Runoff, Soil Erosion, TN, and TP Losses Based on Experimental Runoff Plots in Northern China

Effect of precipitation and sediment concentration on the loss of nitrogen and phosphorus in the Pasikhan River

Effect of land use change on hydrology of forested watersheds

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