Dynamics of carbon and nitrogen storage in two typical plantation ecosystems of different stand ages on the Loess Plateau of China

Wang, Yanfang; Liu, Ling; Feixue, Yue; Dong, Liang

doi:10.7717/peerj.7708

Cited by 9 publications

(7 citation statements)

References 54 publications

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“…In present study, significantly negative correlation between SOC and soil BD had been found (Table 2), which is in agreement with the results of previous studies (Thanh and Cuong, 2017a;Zhang et al, 2018). Plant growth and root penetration with organic matter returning can significantly improve soil structure and porosity and increase SOC content and impact soil BD (Ruehlmann and Krschens, 2009;Thanh and Cuong, 2017a;Wang et al, 2019). Soil P is a dominant nutrient that controls plant growth and development (Lei et al, 2019).…”

Section: Factors Influencing Soc Across Stand Agessupporting

confidence: 92%

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Enhancement of Soil Organic Carbon by Acacia Mangium Afforestation in Southeastern Region, Vietnam

CUONG¹,

THANG²,

BOLANLE-OJO³

et al. 2022

AgricultForest

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The knowledge about dynamics of soil organic carbon (SOC) accumulation and its controls are critical in understanding of the C cycling in forest ecosystems. Acacia mangium Willd. is one of the most important fast-growing afforestation tree species in Vietnam, providing significant ecological, economic, environmental, and social benefits. The existing studies offered information limited on the distribution and regulation of SOC in the A. mangium plantations. The primary purpose of this study was to explore the variation trend of SOC and its driving factors in an age-sequence of three A. mangium plantation stands in Changriec Historical -Cultural Forest, Southeastern region, Vietnam. The study was conducted to estimate SOC content and storage, and soil physicochemical characteristics of three different-aged (4-, 7-, 11-year-old stands) A. mangium plantations. The SOC content increased significantly from young to older stand, and its maximum concentration occurred in the topsoil layer and decreased continually with increasing soil depth. The SOC stocks increased significantly with the stand age. The SOC stocks showed obvious surface aggregation, with more than 60% of SOC distributed in the soil of 0-30 cm depth. The soil total nitrogen content and soil texture (i.e., soil silt content) were identified as the major factors controlling the SOC distribution. The other parameters (i.e., plant biomass, soil pH, bulk density, available nitrogen, total phosphorus, available phosphorus, total potassium, and available potassium) also significantly influenced the distribution of SOC. These findings suggest that afforestation with A. mangium can facilitate SOC accumulation, improve soil nutrient regimes, and

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Section: Factors Influencing Soc Across Stand Agessupporting

confidence: 92%

“…Coarse fractions (>2 mm) were very rare in the soil samples. Thus, the following equation was used to calculate CS Thanh and Cuong 2017a;Wang et al 2019):…”

Section: Calculation Of Soil Carbon Storagementioning

confidence: 99%

Enhancement of Soil Organic Carbon by Acacia Mangium Afforestation in Southeastern Region, Vietnam

CUONG¹,

THANG²,

BOLANLE-OJO³

et al. 2022

AgricultForest

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“…The mechanism of soil carbon sequestration with vegetation restoration is more complex (Wang et al, 2019). Although it has been reported that there is a high rate of growth and carbon uptake in young trees, our finding reported a higher soil C and N stock in NF compared to PF yet it has younger vegetation.…”

Section: Effects Of Elevation and Stand Age On Soil C And N Stockcontrasting

confidence: 60%

Variability of soil carbon and nitrogen stocks after conversion of natural forest to plantations in Eastern China

Ngaba¹,

Ma²,

Hu³

2020

PeerJ

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Forest plantation, either through afforestation or reforestation, has been suggested to reverse and mitigate the process of deforestation. However, uncertainties remain in the potential of plantation forest (PF) to sequestrate carbon (C) and nitrogen (N) compared to natural forest (NF). Soil C and N stocks require a critical and updated look at what is happening especially in the context of increasing rate of land use change and climate change. The current study was conducted in China’s Eastern forest to estimate soil C and N stocks in six depth layers (0–10, 10–20, 20–40, 40–60, 60–80 and 80–100 cm) and two forest types (NF and PF) at four sites along climate factors gradient. The results showed that the overall mean soil C and N amounts to a depth of 20 cm ranged from 2.6 ± 1.1 Mg ha−1 to 38.6 ± 23.1 Mg ha−1, and soil nitrogen stock ranged from 0.2 ± 0.1 Mg ha−1 to 3.3 ± 1.5 Mg ha−1. Moreover, a loss of C stock was observed at Qingyuan (QY) by −7%, Dinghushan (DH) by −26%, Jianfengling (JF) by −13% while that of N stock was observed at QY (−8%), DH (−19%) and JF (−12%) at both depth layers. These results indicate that NFs have a better capacity to accumulate soil C and N. The soil C and N decreased from the southeast to the northeast and increased from tropical to temperate mixed forests zone in the eastern part of the study area. The C and N stock mainly occurred in the topsoil and decreased significantly with depth. Moreover, soil C and N stocks increased with age of plantation. This study provides an overview of the current spatial distribution and soil stocks of C and N, as well as the effects of environmental factors on soil C and N stocks. It also indicated that, although mean annual temperature and mean annual precipitation are the key factors affecting the variations in soil C and N, their vertical and horizontal distribution differed in various aspects.

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“…This was also evidenced in the present study by an increase in CTT system with an increase in stand age (Figure 6). This trend is likely due to the increase in ecosystem C stocks with stand age (Mao et al, 2010;Noh et al, 2010;Wang et al, 2019), as reported by previous studies assessing the trends in C turnover times in temperate forests of northeastern Asia (Ge et al, 2019;Wang et al, 2018).…”

Section: Carbon and Nitrogen Turnover Timessupporting

confidence: 65%

Carbon and Nitrogen Turnover Times of South Korean Forests Estimated via Data‐Model Fusion

et al. 2021

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Carbon (C) and nitrogen (N) are fundamental elements that support forest life. The assessment of C and N stocks has been a core focus since the inception of biogeochemistry in terms of the implications of C sequestration and N losses (Högberg et al., 2017;Howarth et al., 2006;Pan et al., 2011). At the ecosystem level, C and N stocks are the balance between (a) input fluxes to forests including photosynthesis, N deposition, and biological N fixation, (b) internal fluxes in forests such as litterfall, N mineralization, and N retranslocation, and (c) output fluxes from forests through respiration, N leaching, and denitrification (Agren & Andersson, 2012;Gundersen, 1991). This balance can be interpreted by turnover time, which represents the average time elapsed between the input of an element to forests and its output from forests in an autonomous Abstract Biogeochemical models use estimates of carbon (C) and nitrogen (N) turnover times for the future projection of global forest C and N stocks, but unexplained variation in the C and N turnover times is causing considerable uncertainty. This study aimed to estimate C and N turnover times of South Korean forests and explain their variation with forest type, temperature, precipitation, stand age, and ecosystem C:N ratio. We used the balance method and data-model fusion to estimate the C and N turnover times. Data-model fusion was used to integrate the National Forest Inventory data (2011-2020) with a biogeochemical model, Forest Biomass and Dead organic matter Carbon and Nitrogen (FBD-CAN). The N turnover time (376-499 years) was ∼45 times longer than the C turnover time (9-10 years). Forest type had no substantial effects on the C and N turnover times. However, the C and N turnover times were positively correlated with stand age and ecosystem C:N ratio, and negatively correlated with temperature. Overall, ecosystem C:N ratio, stand age, temperature, and precipitation explained 45%, 15%, 12%, and 3%, respectively, of the total variation of the C and N turnover times. These results contribute to the understanding and prediction of forest C and N changes in a changing world and highlight the importance of considering C:N ratio for reliable estimation of the C and N turnover times.Plain Language Summary Forests are major sinks of carbon and nitrogen that can cause global warming when present in gaseous forms. Turnover times, referring to the time an element remains in an ecosystem, are measures of the long-term stability of carbon and nitrogen. Models use estimates of turnover times for future projections of carbon and nitrogen cycles, but limited knowledge in turnover times and model uncertainty are causing trouble. Data-model fusion is a technic that combines data and model's output to decrease model uncertainty. We used data-model fusion to estimate carbon and nitrogen turnover times with a model and field-measured carbon and nitrogen data in the South Korean forests. We then explained how forest type, temperature, precipitation, forest age, and carbon:nitrogen ratio a...

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Dynamics of carbon and nitrogen storage in two typical plantation ecosystems of different stand ages on the Loess Plateau of China

Cited by 9 publications

References 54 publications

Enhancement of Soil Organic Carbon by Acacia Mangium Afforestation in Southeastern Region, Vietnam

Enhancement of Soil Organic Carbon by Acacia Mangium Afforestation in Southeastern Region, Vietnam

Variability of soil carbon and nitrogen stocks after conversion of natural forest to plantations in Eastern China

Carbon and Nitrogen Turnover Times of South Korean Forests Estimated via Data‐Model Fusion

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