Phosphorus loss and its estimation in a small watershed of the Yimeng mountainous area, China

Li, Zhernwei; Zhang, Guanghui; Yu, Xingxiu; Liu, Qianjin; Zhang, X. C.

doi:10.1007/s12665-014-3475-3

Cited by 19 publications

(12 citation statements)

References 46 publications

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“…The objectives of this study were: (1) to define the characteristics of nitrogen and phosphorus loss under different treatments under drip irrigation in arid area; (2) to verify which relationship between the accumulation of nitrogen and phosphorus in soil and plant absorption under drip irrigation in arid area; (3) which treatment had less nitrogen and phosphorus loss and higher yield under drip irrigation in arid area. The results of the study will be particularly helpful in choosing fertigation regimes to minimize the leaching of N and P and to boost higher yields.…”

Section: Plos Onementioning

confidence: 99%

“…In recent decades, non-point source pollution (NPSP) has become a major threat to the water quality of global water resources [1][2][3]. Non-point source pollution (NPSP) is influenced by lots of factors, such as soil type, land use, climate, hydrology, and management [4].…”

Section: Introductionmentioning

confidence: 99%

“…It has been established that excessive application of N leads to nitrate pollution of groundwater and surface water [19,20]. Phosphorus can be transported to water bodies via storm run-off in dissolved and particulate forms [2]. Reasonable water and N and P need to be supplied in the right amounts for higher crop yields [21].…”

Section: Introductionmentioning

confidence: 99%

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Towards to understanding the preliminary loss and absorption of nitrogen and phosphorus under different treatments in cotton drip- irrigation in northwest Xinjiang

Pan

et al. 2021

PLoS ONE

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Drip irrigation under plastic mulch is widely used in Xinjiang, Northwest China. It can not only save water, but also reduce nutrient loss and improve fertilizer utilization. However, it is not clear whether the leaching occurs or not, what is the leaching amount? What is the relationship among fertilization, irrigation regimes, loss, cotton absorption, and cotton field under different fertilization and irrigation management under drip irrigation? Studying these issues not only provides reference for the formulation of fertilization and irrigation systems, but also is of great significance for reducing non-point source pollution. A long-term positioning experiment was conducted from 2009 to 2012 in Baotou Lake farm in Korla City, Xinjiang, with drip-irrigated cotton (Gossypium hirsutum L.) under different N fertilizer and irrigation amounts. The treatments were designed comprising Control (CK,0 N, 0 P, and 0 K with an irrigation of 480 mm) and the following three other treatments: (1) Conventional fertilize and irrigation (CON, 357 kg N hm–2, 90 kg P hm–2, 0 kg K hm–2, and irrigation of 480 mm); (2) Conventional fertilization and Optimizing irrigation (OPT, 357 kg N hm–2, 90 kg P hm–2, 62 kg K hm–2, and irrigation of 420 mm); and (3) Optimizing fertilization and irrigation (OPTN, 240 kg N hm–2, 65 kg P hm–2, 62 kg K hm–2, and irrigation of 420 mm). The results found that the leaching would occur in arid area under drip irrigation. The loss of total N, NH4+, P, N and P loss coefficient was higher under conventional fertilize and irrigation treatment while the loss of NO3- was higher under conventional fertilization and optimizing irrigation treatment. The correlations among N, P absorption by cotton, loss of NH4+ and total phosphorus were quadratic function. The total nitrogen loss and cumulative nitrogen application was lineally correlated. The loss of NO3- and cumulative nitrogen application was exponential. The nitrogen and phosphorus absorption by cotton under conventional fertilization and optimizing irrigation treatment was 24.53% and 35.86% higher than that in conventional fertilize and irrigation treatment, respectively. The cotton yield under conventional fertilization and optimizing irrigation treatment obtained higher than that in other three treatments. Therefore, the conventional fertilization and optimizing irrigation treatment was the optimal management of water and fertilizer in our study. These results demonstrate that reasonable water, nitrogen and phosphorus fertilize could not only effectively promote the absorption of nitrogen and phosphorus, but also reduce nitrogen and phosphorus losses under drip fertigation and plastic mulching.

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Section: Plos Onementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Towards to understanding the preliminary loss and absorption of nitrogen and phosphorus under different treatments in cotton drip- irrigation in northwest Xinjiang

Pan

et al. 2021

PLoS ONE

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“…Some studies have shown that P loss is mainly caused by sediment transport, and the proportion caused by overland flow and interflow is relatively small [19,20]. Other experimental studies reported that nutrient loss through interflow occupies a substantial share of the total nutrient loss [5,21].…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Loss through Overland Flow and Interflow from Bare Weathered Granite Slopes in Southeast China

et al. 2019

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Phosphorus (P) is the key limiting factor for eutrophication, and the mechanism of P loss from hillslopes is complex. Few attempts have been made to study the processes of P loss through overland flow and interflow from bare weathered granite slopes in Southeast China. Therefore, artificial rainfall simulations were performed to evaluate P loss from bare weathered granite slopes with different slope angles (5°, 8°, 15°, 25°) and different rainfall intensities (1.5, 2.0, 2.5 mm/min). The results show that overland flow increased with rainfall intensity, while it declined with slope angle. Interflow exhibited a single-peak curve with time of runoff. The interflow accounted for 28.53–89.12% of the total runoff yield, and the percentage declined with rainfall intensity and increased with slope angle. Both total phosphorus (TP) concentration (CTP) and TP load (LTP) in overland flow increased with rainfall intensity, and the percentages of LTP in each rainfall event ranged from 51% to 92%. CTP in overland flow distinctly fluctuated, with the maximum appearing on the 25° slope, while the maximum in interflow was observed on the 5° slope. LTP in overland flow was the highest on the 8° slope, and was significantly affected by runoff yield and rainfall intensity (p < 0.01). LTP in interflow was small and was significantly affected by rainfall intensity (p < 0.01). Runoff P was mainly lost through overland flow, dominantly in the form of particulate phosphorus (PP), and P loss through interflow was an important supplementation, mainly in the form of dissolved phosphorus (DP). These results provide underlying insights and scientific background for the control of P loss in bare weathered granite areas.

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“…The most severe negative impacts of soil erosion include decreased soil fertility (Mahdi et al, 2001;Gu et al, 2018), degraded soil structure (Tenberg et al 2014), and reduced effective plant rooting depth. When nutrient resources are depleted by erosion, plant growth is stunted and productivity is reduced (Pimentel, 2005;Dominati et al, 2010;Li et al 2015). Erosion-induced variabilities of soil nutrient significantly alters agricultural productivity in cropping systems (Montanarella et al, 2015;Gu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Global patterns of crop yield responses to soil erosion

Zhang

Huang

et al.

Authorea

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Soil erosion decreases soil productivity and threats global food security. Various relationships between crop yield and soil erosion were found for different regions, but a comprehensive global synthesis of the relationship is lacking. To quantify crop yield and soil erosion, we conducted a meta-analysis with a hierarchical mixed-effects model based on global-scale studies, and incorporating erosion depth, crop yield, grain type, soil type, measure, and other factors. The results confirmed that crop yield was negatively affected by soil erosion, but the decreasing trend of crop yield with erosion thickness was different. Crop yields did not decreased significantly when erosion depth was < 5 cm. When erosion depth was > 20 cm, crop yield clearly decreased no matter what soil management measures were adopted, which indicated that the degradation of soil productivity could not be restored. In addition, the effect degree of erosion was significantly different between 5 -10 cm and 10 -15 cm erosion depth intervals. We conclude that a widely used linear relationship does not well describe the relationships between crop yield and soil erosion, and we suggested that the crop yield response curve was concave when erosion depth was > 5 cm.

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Phosphorus loss and its estimation in a small watershed of the Yimeng mountainous area, China

Cited by 19 publications

References 46 publications

Towards to understanding the preliminary loss and absorption of nitrogen and phosphorus under different treatments in cotton drip- irrigation in northwest Xinjiang

Towards to understanding the preliminary loss and absorption of nitrogen and phosphorus under different treatments in cotton drip- irrigation in northwest Xinjiang

Phosphorus Loss through Overland Flow and Interflow from Bare Weathered Granite Slopes in Southeast China

Global patterns of crop yield responses to soil erosion

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