Nitrogen deposition and soil nitrogen dynamics in subtropical evergreen broad-leaved stands along an age-sequence

Zhao, Hang; Yao, Xiaodong; Wang, Q; Chen, Y.S; Xu, Xiaoniu

doi:10.4067/s0718-95162013005000021

Cited by 6 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nitrogen (N) is an essential nutrient affecting biological production in terrestrial and aquatic ecosystems, hence it is important to understand how this element is cycled in a specific region or ecosystem (Francis et al, 2007;Zhao et al, 2013). Coastal wetlands reside at a critical interface between terrestrial land and ocean, which plays a crucial role in balancing and sequestrating N as well as protecting Journal of Soil Science and Plant Nutrition, 2016, 16 (2), 337-349 biodiversity of coastal ecosystems (Bai et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbon source on dissimilatory nitrate reduction to ammonium in Costal Wetland sediments

Liu

Han

et al. 2016

J. Soil Sci. Plant Nutr.

Self Cite

View full text Add to dashboard Cite

15 N atom% of NO 3 --N is 20%). The results showed that soil DNRA rates varied from 0.018-0.497 mg N kg -1 dry soil d -1 during the whole incubation, and the rates differed significantly among treatments following the order: oxalate> citrate> glucose> acetate> malate>no exogenous C addition over the first 12-h incubation. This was possibly caused by the different decomposition rates of various OC sources, which further influenced the available energy provided for DNRA microorganisms. Soils with no addition of exogenous C showed low soil DNRA rates, presumably because of the low C/NO 3 -ratio as well as energy availability. The relative lower soil DNRA rates over the 24-h incubation indicated that DNRA is a fast process. Our results suggest that DNRA could be controlled by OC sources, especially organic acids, demonstrating that the widespread use of glucose in soil laboratory studies might limit our understanding on the effects of OC on soil DNRA process.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Carbon source on dissimilatory nitrate reduction to ammonium in Costal Wetland sediments

Liu

Han

et al. 2016

J. Soil Sci. Plant Nutr.

Self Cite

View full text Add to dashboard Cite

show abstract

“…There are a number of Quaternary-based examples where chronosequence studies are useful, for example for estimating field weathering rates (element depletion and mineral transformation, e.g. Favilli et al 2009;Mavris et al 2011;Panichini et al 2017), carbon (C) sequestration rates (Kabala and Zapart 2012;Lawrence et al 2015;McFarland et al 2019), nitrogen mineralisation (Zhao et al 2013) or using soils for environmental reconstructions (Kruczkowska et al 2019). However, the inspection of the Quaternary investigation reveals that many nonlinear procedures in any chronosequence are described using component rates that are implicitly determined in its calculations, for example linear instead of nonlinear derivation.…”

Section: Introductionmentioning

confidence: 99%

Mathematical–Statistical Problem that Has a Significant Implication on Estimation of Interval-Specific Rates of Soil-Forming Processes

Matus

Egli

2019

J Soil Sci Plant Nutr

View full text Add to dashboard Cite

Mathematical-statistical problem on estimation of soil-forming processes. This paper raises a mathematical-statistical problem that finally can be found in any chronosequence of a specific Quaternary-based process (e.g. soil mass, clay content accumulation). The problem arises when interval-specific rates of a component f(t) are intended by dividing the stock by the given age t. The procedure implies that only an average specific rate is calculated in a linear form, for example when soil organic carbon often tends to an asymptotic end-value. For any other parameters (e.g. sedimentation rates, soil horizons thickness), the same holds true. The mathematical-statistical problem arises if the rates are derived using a linear calculation (individual stocks, f(t) divided by time, t) and then plotted as a function of time, in circumstances where there is no correlation between t and the components f(t).To illustrate this problem, we used a random generator function where the plot t versus f(t) are not correlated. We also give examples of the chronosequence approaches of soil organic carbon and soil mass, where, at a given point, the real specific rate corresponds to the slope (first derivative) of the obtained non-linear regression function. The random generator function for the plot t versus f(t) showed no significant relationship (R 2 = 0.0), but f(t)t −1 and t showed highly significant correlation (R 2 = 0.62). The error in calculating the component rate by dividing by time instead of using the derivative function when the processes are not linear ranged between 22% and > 500%. We conclude that non-independent variables plotted in a chronosequence can infer correlations even when they might not exist. Carefully observation is needed on the dataset when the time is involved, particularly in Quaternary-based studies, since the mass component not necessarily is related with time. Avoid in calculating the change of the mass component simply dividing by time, because an over-or under-estimation from real rate (obtained by derivative function) occurs when the process under study is not linear.

show abstract

“…Large‐scale coal production causes the loss of natural vegetation, and severe degradation of the soil limits the ability of plants from surrounding areas to colonize mining sites (Güiza Suárez, ; Salomons, ; Zhao, Yao, Wang, Chen, & Xu, ). Thus, restoration efforts are needed to address the recovery of edaphic conditions, in turn required to reestablish vegetation cover (Adeli et al, ; Klimkoska, van Diggelen, Grootjans, & Kotowski, ).…”

Section: Introductionmentioning

confidence: 99%

Recovery of biogeochemical processes in restored tropical dry forest on a coal mine spoil in La Guajira, Colombia

2018

View full text Add to dashboard Cite

Open-cast coal mining eliminates vegetation, alters physical and chemical characteristics of soils, and therefore limits the establishment of native vegetation by lack of sufficient moisture, increase bulk density, and low organic matter content. Restoration of extremely degraded areas through plantation of fast growing species is expected to accelerate the recovers of soil organic matter and nutrient cycles. The purposes of this study were to compare intrasystem cycling of C, N, P, and base cations in native and restored forests at an open-cast coal mine in a dry region of Colombia. Leaf-fall, standing leaf litter, and their N, P, Ca, Mg, and K contents were measured for 1 year in native forests and restored forests of various ages (7, 10, and 21 years). The exploitation of coal in La Guajira degraded soil fertility, and although tree planting was sufficient to achieve the partial recovery of soil chemistry and N cycling relative to reference conditions (i.e., native forest), a P deficiency in forest function remained unresolved even 21 years after restoration. The restoration of biogeochemical processes, particularly of critical processes of the P cycle, requires additional human interventions (such as the application of nutrient-rich litterfall from native forests of the region) that favor nutrient dynamics and lead to the recovery of a self-sustaining ecosystem. Thus, multiple efforts are needed for the restoration of these dryland forests to recover ecosystem services (such as soil fertility) that improve C sequestration and help mitigate climate change.

show abstract

Nitrogen deposition and soil nitrogen dynamics in subtropical evergreen broad-leaved stands along an age-sequence

Cited by 6 publications

References 29 publications

Effect of Carbon source on dissimilatory nitrate reduction to ammonium in Costal Wetland sediments

Effect of Carbon source on dissimilatory nitrate reduction to ammonium in Costal Wetland sediments

Mathematical–Statistical Problem that Has a Significant Implication on Estimation of Interval-Specific Rates of Soil-Forming Processes

Recovery of biogeochemical processes in restored tropical dry forest on a coal mine spoil in La Guajira, Colombia

Contact Info

Product

Resources

About