Nitrate leaching and NH3 volatilization during soil reclamation in the Yellow River Delta, China

Zhu, Wei; Yang, Jintao; Yao, Rongjiang; Wang, Xiangping; Xie, Wenping; Li, Peiguang

doi:10.1016/j.envpol.2021.117330

Cited by 22 publications

(13 citation statements)

References 40 publications

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“…This deduction was supported by the result that the NH 3 volatilization was positively correlated with the floodwater NH 4 + –N concentration in the BF and SF1 stage in rice growth season (Figure d–f) but was negatively linked with soil NH 4 + –N in wheat growth season (Figure g–i). However, in contrast with our work, some studies found that NH 3 volatilization increased with higher soil NH 4 + –N concentrations . The divergence might be attributed to the fact that, unlike in these studies, some NH 4 + –N in our soils was immobilized by PET10 and PET200 and thus less bioavailable for NH 3 generation and volatilization.…”

Section: Discussioncontrasting

confidence: 99%

“…However, in contrast with our work, some studies found that NH 3 volatilization increased with higher soil NH 4 + −N concentrations. 37 The divergence might be attributed to the fact that, unlike in these studies, some NH 4 + −N in our soils was immobilized by PET10 and PET200 and thus less bioavailable for NH 3 generation and volatilization.…”

Section: ■ Discussioncontrasting

confidence: 58%

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Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Han

Chen

et al. 2022

ACS Sustainable Chem. Eng.

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Microplastics (MPs) accumulation in agricultural soils has shown serious implications for soil ecosystem functions. Ammonia (NH3) volatilization is a major pathway of nitrogen loss in agricultural systems, while its response mechanism to MPs occurrence, particularly the role of MPs size and natural aging, has been scarcely explored. In this study, polyethylene terephthalate of sizes of 10 μm (PET10) and 200 μm (PET200) were selected in a rice–wheat rotation cycle soil system. Results showed that PET10 and PET200 reduced soil NH3 volatilization cumulative amount from 58.9 to 18.6–40.3 kg N/ha and yield-scaled loss from 2.95 to 0.92–1.60 kg/t grain. Reduction of NH3 volatilization occurred in both the rice growth season and the subsequent wheat growth season, in which two MPs were aged in the initial rice season, with verification by 2.8 wt % more bulk oxygen of PET200 separated from the soil after rice harvest. Moreover, PET200 treatment showed 7.7–25.9% less cumulative NH3 volatilization than PET10, which was significant in the rice growth season. This was partially related to the higher adsorption capacity (10.6 mg/g) for free NH4 +–N of PET200 and 5.2% more microaggregate (<250 μm) formation in PET200 treatment. These findings provide references for the assessment of MPs effects on soil nitrogen biogeochemical cycling.

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Section: Discussioncontrasting

confidence: 99%

Section: ■ Discussioncontrasting

confidence: 58%

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Han

Chen

et al. 2022

ACS Sustainable Chem. Eng.

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“…The terrain is flat, and this region was formed by the sediment of the Yellow River and is developing rapidly. Since the Yellow River Delta (YRD) suffers the seawater encroachment and relative high evapotranspiration of temperate monsoon climate, this region has a high proportion of coastal saline-alkali land (~50%) [32][33][34], which adversely impacts the cropland use efficiency of the region [35,36].…”

Section: Description Of the Study Area And Experimental Sitesmentioning

confidence: 99%

“…Generally, the distribution of crop roots is affected by potential evapotranspiration, precipitation, and the length of the warm season; and deeper rooting depths were mainly found in arid ecosystems [52]. As earlier mentioned, this study was conducted at a coastal saline land with a shallow groundwater table and flat terrain [34], close to the Bohai Sea (~10 km). Maize and sorghum were planted during May and October when maritime climate with abundant rainfall and warm temperature is prevalent.…”

Section: Factors Affecting the Performance Of Soil-and Crop-based Rem...mentioning

confidence: 99%

Quick Detection of Field-Scale Soil Comprehensive Attributes via the Integration of UAV and Sentinel-2B Remote Sensing Data

et al. 2021

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Satellite and unmanned aerial vehicle (UAV) remote sensing can be used to estimate soil properties; however, little is known regarding the effects of UAV and satellite remote sensing data integration on the estimation of soil comprehensive attributes, or how to estimate quickly and robustly. In this study, we tackled those gaps by employing UAV multispectral and Sentinel-2B data to estimate soil salinity and chemical properties over a large agricultural farm (400 ha) covered by different crops and harvest areas at the coastal saline-alkali land of the Yellow River Delta of China in 2019. Spatial information of soil salinity, organic matter, available/total nitrogen content, and pH at 0–10 cm and 10–20 cm layers were obtained via ground sampling (n = 195) and two-dimensional spatial interpolation, aiming to overlap the soil information with remote sensing information. The exploratory factor analysis was conducted to generate latent variables, which represented the salinity and chemical characteristics of the soil. A machine learning algorithm (random forest) was applied to estimate soil attributes. Our results indicated that the integration of UAV texture and Sentinel-2B spectral data as random forest model inputs improved the accuracy of latent soil variable estimation. The remote sensing-based information from cropland (crop-based) had a higher accuracy compared to estimations performed on bare soil (soil-based). Therefore, the crop-based approach, along with the integration of UAV texture and Sentinel-2B data, is recommended for the quick assessment of soil comprehensive attributes.

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“…The traditional agricultural N source in China is mainly urea, which has problems of overcapacity and low utilization rate (W. Zhu et al., 2021; Ju & Gu, 2014). The summer maize season coincides with the hot and rainy days, which is likely to cause low NUE and aggravate environmental problems such as greenhouse gas (GHG) emissions (W. Zhang et al., 2013).…”

Section: Introductionmentioning

confidence: 99%

Increasing grain yield, nitrogen use efficiency of summer maize and reducing greenhouse gas emissions by applying urea ammonium nitrate solution

Ren

Zhao

et al. 2022

Agronomy Journal

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The contradiction between the high grain yield of summer maize (Zea mays L.) and greenhouse gas (GHG) emissions in the field can be resolved by selecting effective nitrogen (N) sources and fertilization methods. In this study, two fertilization methods were used: (a) urea ammonium nitrate solution (UAN) and urea (210 kg ha–1 nitrogen applied) were applied by farmers' traditional fertilization method; and (b) fertigation of four UAN application rates: CK (no N applied), AF1 (126 kg N ha–1), AF2 (168 kg N ha–1), AF3 (210 kg N ha–1). The results showed that both hybrids (DH518 and DH605) applied UAN under the traditional fertilization method increased grain yield by 2.4 and 1.8% and enhanced nitrogen use efficiency (NUE) by 25.1 and 9.9%, respectively, compared with urea. While under fertigation treatment, the grain yield increased by 7.6 and 6.6%, and the NUE increased by 23.2 and 12.4%. Grain yield increased with the increase of UAN application, and the NUE showed a trend of rising first and then falling under fertigation treatment. Both the cumulative N2O emissions and N2O emission factor showed an increasing trend as well. An application rate of UAN at 168 kg N ha–1 (AF2) resulted in a NUE that was 49% higher than urea. Compared with urea, the global warming potential (GWP) and greenhouse gas intensity (GHGI) of AF2 were reduced by 29.5% and 31.2%, respectively. These indicated that optimizing the application rate of UAN through fertigation would achieve better summer maize yield and environmental benefits.

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Nitrate leaching and NH3 volatilization during soil reclamation in the Yellow River Delta, China

Cited by 22 publications

References 40 publications

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Quick Detection of Field-Scale Soil Comprehensive Attributes via the Integration of UAV and Sentinel-2B Remote Sensing Data

Increasing grain yield, nitrogen use efficiency of summer maize and reducing greenhouse gas emissions by applying urea ammonium nitrate solution

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Nitrate leaching and NH3 volatilization during soil reclamation in the Yellow River Delta, China

Cited by 22 publications

References 40 publications

Polyester Microplastic Mitigated NH3 Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Polyester Microplastic Mitigated NH3 Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Quick Detection of Field-Scale Soil Comprehensive Attributes via the Integration of UAV and Sentinel-2B Remote Sensing Data

Increasing grain yield, nitrogen use efficiency of summer maize and reducing greenhouse gas emissions by applying urea ammonium nitrate solution

Contact Info

Product

Resources

About

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?

Polyester Microplastic Mitigated NH₃ Volatilization from a Rice–Wheat Rotation System: Does Particle Size or Natural Aging Effect Matter?