Simulating greenhouse gas emissions and stocks of carbon and nitrogen in soil from a long-term no-till system in the North China Plain

Zhang, Xubo; Sun, Zhigang; Liu, Jian; Ouyang, Zhu; Wu, Lianhai

doi:10.1016/j.still.2017.12.013

Cited by 23 publications

(16 citation statements)

References 41 publications

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“…Carbon and nitrogen stocks in soil can largely determine the level of their stocks in the forest ecosystem; thus, the ecosystem carbon and nitrogen stocks in the SLL were the highest. The relative humidity and SWC showed positive correlations with the forest ecosystem carbon and nitrogen stocks, which confirmed the lower decomposition rate of organic matter in humid conditions [62,63]. Additionally, the lower VPD in SLL in our study means a higher relative humidity, which also benefits the accumulation of soil carbon and nitrogen.…”

Section: Effect Of Environmental Factors On Larch Forest Carbon and Nsupporting

confidence: 78%

Carbon and Nitrogen Stocks in Three Types of Larix gmelinii Forests in Daxing’an Mountains, Northeast China

Xiao

Man

Duan

2020

Forests

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Studying carbon and nitrogen stocks in different types of larch forest ecosystems is of great significance for assessing the carbon sink capacity and nitrogen level in larch forests. To evaluate the effects of the differences of forest type on the carbon and nitrogen stock capacity of the larch forest ecosystem, we selected three typical types of larch forest ecosystems in the northern part of Daxing’an Mountains, which were the Rhododendron simsii-Larix gmelinii forest (RL), Ledum palustre-Larix gmelinii forest (LL) and Sphagnum-Bryum-Ledum palustre-Larix gmelinii forest (SLL), to determine the carbon and nitrogen stocks in the vegetation (trees and understories), litter and soil. Results showed that there were significant differences in carbon and nitrogen stocks among the three types of larch forest ecosystems, showing a sequence of SLL (288.01 Mg·ha−1 and 25.19 Mg·ha−1) > LL (176.52 Mg·ha−1 and 14.85 Mg·ha−1) > RL (153.93 Mg·ha−1 and 10.00 Mg·ha−1) (P < 0.05). The largest proportions of carbon and nitrogen stocks were found in soils, accounting for 83.20%, 72.89% and 64.61% of carbon stocks and 98.61%, 97.58% and 96.00% of nitrogen stocks in the SLL, LL and RL, respectively. Also, it was found that significant differences among the three types of larch forest ecosystems in terms of soil carbon and nitrogen stocks (SLL > LL > RL) (P < 0.05) were the primary reasons for the differences in the ecosystem carbon and nitrogen stocks. More than 79% of soil carbon and 51% of soil nitrogen at a depth of 0–100 cm were stored in the upper 50 cm of the soil pool. In the vegetation layer, due to the similar tree biomass carbon and nitrogen stocks, there were no significant differences in carbon and nitrogen stocks among the three types of larch forest ecosystems. The litter carbon stock in the SLL was significantly higher than that in the LL and RL (P < 0.05), but no significant differences in nitrogen stock were found among them (P > 0.05). These findings suggest that different forest types with the same tree layer and different understory vegetation can greatly affect the carbon and nitrogen stock capacity of the forest ecosystem. This indicates that understory vegetation may have significant effects on the carbon and nitrogen stocks in soil and litter, which highlights the need to consider the effects of understory in future research into the carbon and nitrogen stock capacity of forest ecosystems.

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Section: Effect Of Environmental Factors On Larch Forest Carbon and Nsupporting

confidence: 78%

Carbon and Nitrogen Stocks in Three Types of Larix gmelinii Forests in Daxing’an Mountains, Northeast China

Xiao

Man

Duan

2020

Forests

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“…Agro-ecosystems have recently been in the research spotlight due to their role in climate change; more specifically, farmlands, which are an example of how humans modify the natural environment, have the potential to largely affect C exchange between soils and the atmosphere (Camarotto et al, 2018). Various field management practices, such as tillage, fertilization and irrigation, have direct and/or indirect implications for the soil C balance (Zhang et al, 2018). Our simulations showed that soils in all four tested treatments acted as a C sink.…”

Section: Discussionmentioning

confidence: 99%

“…A detailed description of the SPACSYS model (https://www.rothamsted.ac.uk/rothamsted-spacsys-model) has been provided in previous studies (Wu et al, 2007; Perego et al, 2016; Li et al, 2017a, 2018a; Zhang et al, 2018). For this reason, only a brief summary of how the model was applied to the current study is presented here.…”

Section: Methodsmentioning

confidence: 99%

“…The impact of farmland nutrient losses on environment security is of serious concern (Chen et al, 2011; Ti et al, 2019). Agriculture management practices, such as conservation tillage and rational fertilization, led to reduce water and soil losses and increase grain yield are potential solution (Dikgwatlhe et al, 2014; Xia et al, 2016), but these approaches require an understanding of complex adaptive traits for climatic factors and environment conditions (Zhang et al, 2018). Soil carbon (C) and nitrogen (N) cycling and hydrological processes – the main ecosystem components studied by ecologists and global change scientists – play a key role in agro-ecological systems and can both positively and negatively affect crop production and soil quality (Chen and Coops, 2009; Xia et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Conservation tillage including crop straw returning and reducing tillage intensity, is a new approach that has been suggested to benefit agriculture by increasing crop yields, conserving soil water and reducing seasonal evaporation; in this way, conservation tillage supports sustainable agricultural development (Zhang et al, 2007, 2018). Previous research has shown that straw returning enhances organic C sequestration and N levels in soil, and is particularly relevant for reducing soil nutrient losses (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Simulating greenhouse gas emissions and stocks of carbon and nitrogen in soil from a long-term no-till system in the North China Plain

Cited by 23 publications

References 41 publications

Carbon and Nitrogen Stocks in Three Types of Larix gmelinii Forests in Daxing’an Mountains, Northeast China

Carbon and Nitrogen Stocks in Three Types of Larix gmelinii Forests in Daxing’an Mountains, Northeast China

Soil C and N dynamics and hydrological processes in a maize-wheat rotation field subjected to different tillage and straw management practices

Optimizing fertilization strategies for a climate-resilient rice – wheat double cropping system

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