Control of Fe and Mn availability on nitrogen mineralization in subtropical paddy soils

Akter, Masuda; Kader, M. Abdul; Pierreux, Sofie; Gebremikael, Mesfin Tsegaye; Boeckx, Pascal; Sleutel, Steven

doi:10.1016/j.geoderma.2016.01.036

Cited by 14 publications

(5 citation statements)

References 45 publications

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“…While our results point to negative correlations between SOC C on one hand and Fe and Al on the other (Table 4), some study results are contrary to this (e.g. Wagai and Mayer, 2007;Kaiser and Guggenberger, 2000;Wilson et al, 2013;Akter et al, 2016). They explain that Fe hydroxides in water saturated soils play a role in stabilizing SOM through complex stabilization mechanisms by sorptive processes, or by the formation of organo-mineral complexes including SOM-Fe oxide-clay associations (Kaiser andGuggenberger, 2000, Wagai andMayer, 2007).…”

Section: Links Between Soil Hydromorphy and Other Soil Properties Andcontrasting

confidence: 95%

“…Wilson et al (2013) also pointed that strongly crystalline Fe hydroxide features are able to sequester OM in Fe-SOM complexes via encapsulation at the core of the Fe nodules. The anaerobic bacteria in waterlogged soils were also reported to increase the bond between Fe hydroxides and SOM (Akter et al, 2016). Similar results relating to Al are also available in literature; however, poorly crystalline Fe and Al hydroxides are more important than strongly crystalline mineral hydroxides for the stabilization of SOM (Spielvogel et al, 2008).…”

Section: Links Between Soil Hydromorphy and Other Soil Properties Andsupporting

confidence: 75%

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Soil hydromorphy and soil carbon: A global data analysis

et al. 2018

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Wetland soils are an important component of the Global Carbon Cycle because they store about 20-25% of the terrestrial soil organic carbon (SOC). Wetlands occupy about 6% of the global land surface and any change in their use or management has potentially dramatic consequences on greenhouse gases emissions. However, the capacity of wetland soils to store carbon (C) differs from place to place due to reasons still not well understood. The objective of this review was to evaluate the global variations in wetlands SOC content (SOC C) and to relate it to key soil and environmental factors such as soil texture, intensity of soil hydromorphy, metallic element content and climate. A comprehensive data analysis was performed using 122 soil profiles from 29 studies performed under temperate, humid, sub-humid, tropical and sub-arctic conditions. The results point to average SOC C of 53.5 ± 15.8 g C kg −1 with a maximum of 540 g C kg −1. SOC C increased with increase in intensity of soil hydromorphy (r = −0.52), Al (r = 0.19) and Fe content (r = 0.21), and decreased with soil pH (r = −0.24). There was also a surprising tendency for intensity of soil hydromorphy, and thus SOC C , to decrease with increasing mean annual precipitation and soil clay content. These results contribute to a better understanding of the impact of soil hydromorphy in wetlands on organic C stabilization in the soils. However, further studies with additional information on soil bulk density to assess carbon C stocks, still need to be performed.

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Section: Links Between Soil Hydromorphy and Other Soil Properties Andcontrasting

confidence: 95%

Section: Links Between Soil Hydromorphy and Other Soil Properties Andsupporting

confidence: 75%

Soil hydromorphy and soil carbon: A global data analysis

et al. 2018

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“…1C, Table 2). This result was not in agreement with Gouveia and Eudoxie 25 and Akter 26 , who indicated that under anaerobic conditions, the surface of clay minerals was covered by iron oxides, which limited the diffusion of NH 4 + into the interlayer space, weakening NH 4 + fixation by clay minerals. The reason for the discrepancy can be attributed to the variety of parent materials in different soil types.…”

Section: Discussionmentioning

confidence: 61%

Effect of straw and inhibitors on the fate of nitrogen applied to paddy soil

Xie²,

Yang³

et al. 2020

Sci Rep

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A pot experiment was used to explore the distribution of fertilizer N and agronomic effects in a paddy soil-rice (Oryza sativa L.) system. Five treatments were set: without nitrogen, straw and inhibitor (C), urea (U), urea + straw (US), urea + urease + nitrification inhibitor (UI) and urea + urease + nitrification inhibitor + straw (UIS). Soil and urea-derived microbial biomass N increased significantly in US and UIS compared with straw-free treatments at seedling and tillering, indicating that biotic process play an important role in the retention of fertilizer N with straw addition. About 10% urea-N was recovered as fixed ammonium (FA) at seedling stage, subsequently released at tillering and maturation regardless of treatments, which emphasizes the importance of FA in the retention and supply of fertilizer N in paddy soils. Compared with U, rice yield and N uptake in US decreased by 7.8% and 25.2% respectively, while inhibitors (UIS) alleviated the reduction by 16.4% and 31.6%. The current research indicated UIS is recommended as the most appropriate management strategy in paddy soils of Northeast China based on N dynamics. But the economic effect as well as the field-scale validation need to be further evaluated.

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“…There are many pathways of NH 4 + generation, such as dissimilatory nitrate reduction to ammonium (DNRA), in which nitrate is reduced to ammonium under anaerobic environments (Silver, Herman, & Firestone, 2001). Furthermore, biotic anaerobic N mineralization could be a more plausible source of NH 4 + in the wet samples (Akter et al, 2016). Considering the rhythm of inundation, wherein the water level is reduced in summer, an ecological opportunity arises under adequate light and heat conditions for plants (Li, Yuan, Xiao, & Chen, 2011), and the mean vegetation cover in the riparian zone of the TGR is more than 0.7 (Zhang, Liu, & Sun, 2009).…”

Section: Water Fluctuation Determines Soil Ammonium and Nitrate Conmentioning

confidence: 99%

“…Considering the rhythm of inundation, wherein the water level is reduced in summer, an ecological opportunity arises under adequate light and heat conditions for plants (Li, Yuan, Xiao, & Chen, 2011), and the mean vegetation cover in the riparian zone of the TGR is more than 0.7 (Zhang, Liu, & Sun, 2009). When the water level increases in winter, plant litter, as a source of organic nitrogen, could be transformed into NH 4 + anaerobically through nitrogen mineralization (Akter et al, 2016). Therefore, revegetation, which is widely used in the ecological management of riparian zones (Peng, Zhang, Qin, & Li, 2014), could potentially endanger the water quality of a reservoir.…”

Section: Water Fluctuation Determines Soil Ammonium and Nitrate Conmentioning

confidence: 99%

Soil properties and distribution in the riparian zone: the effects of fluctuations in water and anthropogenic disturbances

Sheng

et al. 2019

European J Soil Science

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China's Three Gorges Dam has generated a large riparian zone around the reservoir that has changed the natural fluctuation in water level (FWL) and intensity of anthropogenic disturbance (AD, i.e. human activities triggering pollutant input). Knowledge about how riparian soil properties respond to such changes remains limited. The aims of this study were to identify the distribution of soil properties in the riparian zone and to determine which types of factors, local‐scale FWL or regional‐scale AD, have a larger effect on the soil properties. A total of 144 composite soil samples, collected from two riparian areas in four sampling surveys, were investigated. Multivariate regression tree analysis indicated that the variation in soil properties was mainly controlled by FWL (40.1%) compared with the minor role of AD (2.1%). Soil total carbon, total nitrogen and organic matter were mainly affected by AD, whereas FWL had a major influence on soil pH, ammonium and nitrate. Along the elevation gradient (150–175 m), the soil properties were determined mainly by the sampling elevation, accounting for 67.6% of the variation, followed by short‐term (5.6%) and long‐term flooding (3.3%). The 167.5‐m elevation was proposed to be the threshold that divides the riparian zone into two different response zones. Soil below 167.5 m was mainly affected by local‐scale FWL, whereas that above 167.5 m was largely affected by regional‐scale AD. This proposed threshold suggests that riparian soil management around the Three Gorges Reservoir should consider both local‐ and regional‐scale factors and that different approaches and strategies for ecological restoration need to be applied along an elevation gradient. Highlights We studied how soil properties respond to fluctuation in water level (FWL) and anthropogenic disturbance (AD). The relative importance of local‐scale FWL and regional‐scale AD was evaluated quantitatively. The 167.5‐m elevation divides the riparian zone into two areas that respond differently to local and regional factors. The variation in riparian soil properties was mainly controlled by local FWL (40.1%) rather than regional AD (2.1%).

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Control of Fe and Mn availability on nitrogen mineralization in subtropical paddy soils

Cited by 14 publications

References 45 publications

Soil hydromorphy and soil carbon: A global data analysis

Soil hydromorphy and soil carbon: A global data analysis

Effect of straw and inhibitors on the fate of nitrogen applied to paddy soil

Soil properties and distribution in the riparian zone: the effects of fluctuations in water and anthropogenic disturbances

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