Carbon Sequestration and Stability, and Soil Erosion in Forest Ecosystem

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Forest Soil".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 6467

Special Issue Editors


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Guest Editor
College of Forestry, Sichuan Agricultural University, Chengdu 611130, China
Interests: forest ecology; ecosystem carbon cycle
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Guest Editor
Huanjiang Observation and Research Station for Karst Ecosystems, Huanjiang, China
Interests: forest ecology; carbon cycling
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Guest Editor
Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China
Interests: plant (community) ecology; microbial ecology; global change ecology
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Special Issue Information

Dear Colleagues,

The pool of soil organic carbon is an important source and sink of atmospheric CO2, and it is one of the most important factors in carbon cycling and functioning. The stability of soil carbon is another factor that controls soil carbon emissions and storage. Stable soil carbon can enhance soil carbon sequestration and increase its mean residence time. Given that soil carbon stability influences carbon emission and storage, and greatly contributes to soil nutrients and quality, an accurate estimation of soil carbon stock and its stability may have important implications for predicting climate change and maintaining ecological sustainability. This Special Issue aims to determine plant, soil, and ecosystem carbon storage and soil C stability changes in forest ecosystems, and to identify key factors that best explain carbon storage and stability changes.

Studies focusing on global change (such as warming, drought, etc.), forest management (such as forest thinning, fertilization, and nitrogen and phosphorus addition, etc.), succession, vegetation restoration, greenhouse experiments, field experiments, litter decomposition, soil microbial activity, soil animal, soil carbon, and soil erosion are welcome in this Special Issue.

Dr. Hongwei Xu
Dr. Jun Xiao
Dr. Danbo Pang
Guest Editors

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Keywords

  • forest ecosystems
  • forest management
  • global change
  • vegetation restoration
  • carbon cycling
  • carbon stability
  • soil physical property
  • soil biodiversity
  • soil erosion
  • plant diversity

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Published Papers (6 papers)

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Editorial

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4 pages, 547 KiB  
Editorial
Carbon Sequestration and Stability and Soil Erosion in Forest Ecosystems
by Danbo Pang and Hongwei Xu
Forests 2024, 15(11), 1961; https://doi.org/10.3390/f15111961 - 7 Nov 2024
Viewed by 467
Abstract
Soil is the largest carbon pool in terrestrial ecosystems, being about three to four times larger than the vegetation carbon pool and two to three times larger than the atmospheric carbon pool [...] Full article

Research

Jump to: Editorial

12 pages, 3477 KiB  
Article
Heavy Nitrogen Application Rate and Long-Term Duration Decrease the Soil Organic Carbon and Nitrogen Sequestration Rates in Forest Ecosystems
by Yulian Yang, Jiaping Yang, Qing Dong, Dehui Li, Bo Tan, Qinggui Wu, Zhenfeng Xu and Hongwei Xu
Forests 2024, 15(9), 1585; https://doi.org/10.3390/f15091585 - 10 Sep 2024
Cited by 2 | Viewed by 668
Abstract
Nitrogen addition alters soil organic carbon (SOC) and total nitrogen (TN) accumulation in forest ecosystems, but the responses of SOC and TN sequestration rates and dynamics to nitrogen addition in forest ecosystems worldwide remain unclear. This study conducted a global analysis to evaluate [...] Read more.
Nitrogen addition alters soil organic carbon (SOC) and total nitrogen (TN) accumulation in forest ecosystems, but the responses of SOC and TN sequestration rates and dynamics to nitrogen addition in forest ecosystems worldwide remain unclear. This study conducted a global analysis to evaluate the effects of the nitrogen application rate, nitrogen addition duration (time), and humidity on the SOC and TN accumulation rates from 257 data points (63 articles). Nitrogen addition increased SOC and TN by 4.48% and 10.18%, respectively. The SOC and TN accumulation rates were 0.65 and 0.11 g kg−1 yr−1, respectively. Moreover, the percentage changes of SOC and TN overall increased with the nitrogen application rate and duration of nitrogen addition; however, the accumulation rates of SOC and TN overall decreased with the nitrogen application rate and the duration of nitrogen addition. In addition, the percentage changes and change rates of SOC and TN increased overall with the humidity index. In conclusion, nitrogen addition promoted SOC and TN accumulation in forest soil, and the nitrogen application rate and nitrogen addition duration increased the percentage changes in SOC and TN; however, they decreased the accumulation rate, whereas humidity increased the accumulation rates of SOC and TN. These results enhance our understanding of soil carbon and nitrogen cycling in forest soils in the context of global nitrogen deposition. Full article
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22 pages, 7436 KiB  
Article
Soil Erosion Risk Analysis in the Ría de Arosa (Pontevedra, Spain) Using the RUSLE and GIS Techniques
by Carlos E. Nieto, Antonio Miguel Martínez-Graña and Leticia Merchán
Forests 2024, 15(9), 1481; https://doi.org/10.3390/f15091481 - 23 Aug 2024
Cited by 2 | Viewed by 659
Abstract
Soil erosion in coastal areas, driven by global change and human activity, poses a significant threat to ecological and economic stability. This research investigates water erosion in the southeast of the Ría de Arosa (Pontevedra, Spain), utilizing the Revised Universal Soil Loss Equation [...] Read more.
Soil erosion in coastal areas, driven by global change and human activity, poses a significant threat to ecological and economic stability. This research investigates water erosion in the southeast of the Ría de Arosa (Pontevedra, Spain), utilizing the Revised Universal Soil Loss Equation model and Geographic Information System technologies. Key factors analyzed include rainfall erosivity, soil erodibility, topography, land cover, and conservation practices. High-resolution maps (1 × 1 m pixels) identified areas at high risk of erosion. Vulnerable zones, such as coastal cliffs and vineyards, show severe erosion rates exceeding 50 t/ha/year (>5 mm/year), with the most extreme zones reaching up to 200 t/ha/year (>200 mm/year). These results emphasize that intervention could be required or recommended. Suggested measures include reforestation, effective agricultural land management, or the implementation of vegetative barriers to reduce erosion. These areas, characterized by steep slopes and sparse vegetation, are particularly susceptible to soil loss, necessitating specific conservation efforts. The results underscore the need for sustainable coastal management practices and preventive strategies to protect this vulnerable coastal zone. Implementing these measures is crucial to mitigating the impacts of soil erosion, preserving natural resources, and ensuring long-term ecological and economic resilience in the region. Full article
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16 pages, 7125 KiB  
Article
Change Characteristics of Soil Erodibility during Natural Restoration in an Earthquake Landslide of Southwestern China
by Jiangkun Zheng, Junxia Yan, Qiyang Chen, Wangyang Hu, Peng Zhao, Guirong Hou and Yong Wang
Forests 2024, 15(8), 1352; https://doi.org/10.3390/f15081352 - 2 Aug 2024
Cited by 1 | Viewed by 868
Abstract
Landslides caused by earthquakes bring about dramatic changes in soil erodibility. In order to understand the change characteristics of soil erodibility during a vegetation restoration period after the 5.12 Wenchuan earthquake, a non-landslide area, landslide area, and transition area in Leigu Town, Beichuan [...] Read more.
Landslides caused by earthquakes bring about dramatic changes in soil erodibility. In order to understand the change characteristics of soil erodibility during a vegetation restoration period after the 5.12 Wenchuan earthquake, a non-landslide area, landslide area, and transition area in Leigu Town, Beichuan County were selected as research areas. Field soil sampling, geostatistics, and spatial interpolation were used to explore the spatiotemporal changes in soil physicochemical properties and soil erodibility during a natural restoration in 2013 (5 years after the earthquake) and in 2022 (14 years after the earthquake). The results showed that the comprehensive soil erodibility index (CSEI) was mainly composed of five soil factors, which were soil pH, soil total nitrogen (TN), mean weight diameter of soil aggregates (MWD), fractal dimension of soil water stable aggregates (D), and soil erodibility (Kepic). The CSEI of the landslide area was slightly lower than that of the non-landslide area. The CSEI was gradually increasing during the process of natural restoration after earthquake. From 2013 to 2022, the increase rates of the CSEI were 6.9%, 10.0%, and 41.5% for the landslide area, non-landslide area, and transition area, respectively. Along attitude segments, the spatial distribution of soil erodibility in 2022 is more uniform than that in 2013. The higher value of CSEI was located in the upper part of research areas. The spatial distribution of the CSEI in 2013 and 2022 appeared as a moderate autocorrelation. The variable ranges of CSEI in 2013 and 2022 were about 20 m. In the early stage of vegetation restoration, soil and water conservation engineering was recommended in the landslide area. Full article
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11 pages, 2481 KiB  
Article
Nitrogen Addition Promotes the Accumulation of Soil Particulate Organic Carbon in a Subtropical Forest
by Jingqi Chen, Qiufang Zhang, Hui Dai, Jiguang Feng, Quanxin Zeng, Xueqi Sun, Yuanzhen Peng, Wenwei Chen, Biao Zhu and Yuehmin Chen
Forests 2024, 15(4), 619; https://doi.org/10.3390/f15040619 - 28 Mar 2024
Cited by 3 | Viewed by 1415
Abstract
Nitrogen (N) deposition rates of terrestrial ecosystems have gradually declined but are still high in some areas. Previous studies have reported that N addition elicits diverse impacts on soil organic carbon (SOC) pools. SOC can be divided into different functional fractions, namely, particulate [...] Read more.
Nitrogen (N) deposition rates of terrestrial ecosystems have gradually declined but are still high in some areas. Previous studies have reported that N addition elicits diverse impacts on soil organic carbon (SOC) pools. SOC can be divided into different functional fractions, namely, particulate organic carbon (POC) and mineral-associated organic carbon (MAOC). The responses of these fractions to N addition should be elucidated to better understand the changes in SOC pools. Here, we conducted a N addition experiment (0, 40, and 80 kg N ha−1 yr−1) in a subtropical Castanopsis fabri forest to simulate N deposition. The surface (0−10 cm) SOC fractions, aboveground litter product, fine root (diameter < 2 mm) biomass, soil exchangeable cation content, and soil enzyme activity under different N addition treatments were measured. The results showed the following: (1) N addition showed a positive effect on POC and SOC contents but did not significantly affect MAOC content; (2) POC content was negatively correlated with pH and soil enzyme activity and positively correlated with aboveground litter product, suggesting that POC accumulation was influenced by aboveground litter input and microbial decomposition; (3) a close negative relationship was observed between exchangeable Al3+ and Ca2+ or K+ contents, indicating that there is likely to be a trade-off between the mineral sorption and desorption, thus resulting in an insignificant reaction of MAOC to N addition. Overall, the accumulation of SOC under short-term N addition was found to be primarily driven by POC, and the response of different SOC functional fractions to N addition was inconsistent. By incorporating these nuances into ecosystem models, it is possible to predict SOC dynamics more accurately in response to global change. Full article
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21 pages, 3361 KiB  
Article
The Seasonal Impact of Thinning Intensities on Soil Carbon Cycling in the Lesser Xing’an Range, Northeast China
by Baoshan Zhang, Ran Gao and Xibin Dong
Forests 2024, 15(3), 449; https://doi.org/10.3390/f15030449 - 27 Feb 2024
Cited by 1 | Viewed by 1449
Abstract
Forest degradation, driven by human and natural factors, diminishes ecological functions and carbon storage. Understanding the complex dynamics of soil carbon pools is crucial for the global carbon cycle, although these dynamics are poorly understood. This study examines how different thinning intensities influence [...] Read more.
Forest degradation, driven by human and natural factors, diminishes ecological functions and carbon storage. Understanding the complex dynamics of soil carbon pools is crucial for the global carbon cycle, although these dynamics are poorly understood. This study examines how different thinning intensities influence seasonal soil carbon cycling in degraded forests. ANOVA revealed significant differences in soil properties across treatments (p < 0.05). Redundancy analysis and random forest analyses were used to explore relationships among thinning intensities, soil properties, and carbon sequestration. Thinning significantly altered soil attributes, as revealed by field experiments and data analysis. Moderate thinning (20% intensity) significantly enhanced litter retention and soil nutrient levels year-round (p < 0.05). Seasonal variations affected soil carbon dynamics and lower thinning intensities improved carbon sequestration in spring and summer. Conversely, higher thinning intensities led to carbon loss in autumn and winter. Litter carbon, fine root carbon, and correction factor significantly respond to thinning intensities year-round as examined through redundancy analysis and random forest analyses. Findings indicate moderate thinning effectively enhances soil carbon sequestration in degraded forests. Strategically planned thinning could aid climate change mitigation by boosting forest soil carbon storage, influencing forest management and conservation. Full article
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