Long-term effects of forest thinning on soil respiration and its components in a pine plantation

Yang, Lü; Qin, Jianghuan; Geng, Yan; Zhang, Chunyu; Pan, Junxiao; Niu, Shuli; Tian, Dashuan; Zhao, Xiuhai

doi:10.1016/j.foreco.2022.120189

Cited by 11 publications

(6 citation statements)

References 58 publications

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“…However, their Rs values in August were similar to our results in November, likely due to the effect of climatic conditions. On the other hand, thinning resulted in an increase in Rs in June 2015 and September 2016 in the present study, as reported by Yang et al (2022), who found soil respiration between 0.63 and 6.72 g C m -2 d -1 which is in line with the results found in the current study. In addition, Zhang et al (2022) reported that thinning increased Rs by 32% in a Cunninghamia lanceolata plantation in southeastern China, which is lower than the present study, with a mean increase of 66% in June 2015 as a result of medium thinning compared to the control.…”

Section: Discussionsupporting

confidence: 93%

Effects of pre-commercial thinning on soil respiration and some soil properties in black pine (Pinus nigra) stands

Kaptanoğlu¹,

Çömez²

2023

Ağaç Ve Orman

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Forestry practices may cause significant changes in soil characteristics as related to their properties and size. Although chemical attributes of the soil respond to the applications in the mid- or long-term while changes in soil respiration can react rapidly to forestry practices. Therefore, determining changes in soil attributes is needed to identify how the management practices would affect forest ecosystem function. Although there is much information on the effect of thinning practices on tree growth, there is a lack of knowledge on the impacts of pre-commercial thinning on soil properties, especially soil respiration. We aimed to determine pre-commercial thinning effects on some soil attributes in black pine sites. Four treatments with different intensities were applied to the stands studied. These practices were control (no pre-commercial thinning), 2000 (heavy), 4000 (moderate), and 6000 (light) individuals per hectare left, respectively. Measurements of soil respiration and soil temperature were carried out between 2014 and 2017 in spring, summer, autumn, and winter months. Soil characteristics, including pH, organic matter, nitrogen, and phosphor content, were measured just after and three years after the thinning. As a result, thinning increased soil respiration rate and soil temperature while decreased soil pH values. Results of the study showed that carbon balance in the ecosystem was significantly affected by thinnings, and adjusting the thinning intensity may be an efficient carbon management tool for reducing carbon emission from the soil.

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Section: Discussionsupporting

confidence: 93%

Effects of pre-commercial thinning on soil respiration and some soil properties in black pine (Pinus nigra) stands

Kaptanoğlu¹,

Çömez²

2023

Ağaç Ve Orman

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“…Another interesting future research project could also be to perform a comparison of the effects of forest operations carried out in the same areas, both in the framework of rotation and continuous‐cover forestry. Although different recent studies highlighted how a major canopy opening led to a higher decrease in the presence of fine roots (Yang, Qin, et al, 2022; Yang, Wang, et al, 2022), it is also true that in final felling interventions by clear‐cut there is a larger availability of logging woody residues. These can be easily applied along the skid trails or strip roads to reduce soil compaction (Ilintsev et al, 2021; Ring et al, 2021) and lower the level of disturbance to fine roots in the soil directly affected by the passage of the machinery (Figure 7).…”

Section: Discussionmentioning

confidence: 99%

A Meta‐analysis of the effects of ground‐based extraction technologies on fine roots in forest soils

Latterini,

Dyderski,

Horodecki

et al. 2023

Land Degrad Dev

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Fine roots are an important component of forest soil as they play a key role in fundamental processes like plant nutrition and water supply. As with all the features of forest soil, the compaction related to the forest operations and, in particular, to the wood extraction via ground‐based technologies could lead to a significant impact on the presence of fine roots in the soil affected by the passage of the machines. Considering the lack of a review, we used a meta‐analytic approach to synthesise effect sizes of ground‐based extraction technologies affecting the presence of fine roots in the soil, using a multivariate mixed‐effects meta‐analytic model. The obtained results revealed that the presence of fine roots in the soil affected by the passage of the machines was significantly reduced by both skidding (g = −1.23, 95%CI ‐1.87, −0.60) and forwarding (g = −1.37, 95%CI ‐2.01, −0.74). Due to the higher soil compaction caused by forwarding, this method had a marginally but statistically significant greater impact than skidding. We further confirmed the hypothesis that soil compaction and the presence of fine roots were strongly correlated, with the latter being greatly reduced in compacted soils characterised by higher bulk density. What is more, even more than 20 years after a harvesting intervention, the presence of fine roots was significantly lower in both strip roads (forwarding) and skid trails (skidding) as compared to areas which were not impacted by the machine passage. This shows that fine roots are particularly vulnerable to forest operations. On the other hand, the majority of the trails in the database used for the meta‐analysis were created in countries that favour the creation of a small number of widely used trails. Therefore, it would be scientifically valuable to do a comparative evaluation in various forestry contexts, such as in the Mediterranean area, where the development of the forest trails network is oriented on creating a large number of trails with low traffic volumes. Because machinery‐induced soil compaction is the major driver of the decrease in fine roots in skid trails and strip roads, both the application of best management practices as well as of a smarter planning of the trail network to limit soil compaction are strongly recommended. Both applications are highly recommended to be used in the planning phase and in the practical implementation of logging activities.

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“…Based on the results obtained from field and experimental studies, it is evident that thinning and understory plant removal activities inevitably affect Rs and its components by altering the environment of plantation forests [24,25,57,58]. Previous studies have shown that thinning can directly inhibit Rs by reducing aboveground and belowground biomasses [24,25,60,61].…”

Section: Relationships Between Biomass and Soil Respirationmentioning

confidence: 99%

The Relationships between Biomass and Soil Respiration across Different Forest Management Practices

Hu,

Lei,

Wan

2024

Forests

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Soil respiration (Rs) is a widely monitored parameter in global forest management that results in activities that contribute to ecosystem functions. Rs can vary depending on different disturbance levels and ecosystem types as a result of changes in forest management practices. Understanding the mechanisms through which different forest management practices affect Rs can provide a general reference for ecological management and restoration practices. However, the global drivers of Rs across different forest management practices have not been sufficiently studied in the literature. In this study, we investigated the changing trends in Rs based on the relationships evident between biomass and Rs across different forest management practices. We used simple linear models to explore the relationships between biomass (aboveground and belowground biomasses) and Rs at a global scale based on different types of forest management practices and biomes. We observed significant differences in the mean values of Rs among various forest management practices. Furthermore, significant positive relationships between forest biomass and Rs were evident globally. Soil temperature had a significant effect on Rs, but the influences of soil temperature and moisture on Rs changed with the variations in forest management practices. Biome type can regulate the relationships between forest biomass and Rs across different forest management practices. We observed that the relationships between forest biomass and Rs were the strongest for naturally regenerating forests, both with and without signs of management, in tropical and subtropical coniferous and temperate broadleaf and mixed forests. Forest plantations and agroforestry can favor the establishment of similar positive relationships in temperate forest biomes (i.e., temperate conifer forests and boreal forests/taiga). Our results show that aboveground and belowground biomasses can be applied as effective ecological indicators for monitoring Rs levels, depending on different forest management practices and biomes. In this study, we provide evidence for monitoring Rs levels under different forest management practices globally.

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Long-term effects of forest thinning on soil respiration and its components in a pine plantation

Cited by 11 publications

References 58 publications

Effects of pre-commercial thinning on soil respiration and some soil properties in black pine (Pinus nigra) stands

Effects of pre-commercial thinning on soil respiration and some soil properties in black pine (Pinus nigra) stands

A Meta‐analysis of the effects of ground‐based extraction technologies on fine roots in forest soils

The Relationships between Biomass and Soil Respiration across Different Forest Management Practices

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