Effects of vegetation shift from needleleaf to broadleaf species on forest soil CO2 emission

Lee, Jae-Hyun; Zhou, Xue; Seo, Yeonok; Lee, Sang‐Tae; Yun, Ji-Hye; Yang, Yerang; Kim, Jinhyun; Kang, Hojeong

doi:10.1016/j.scitotenv.2022.158907

Cited by 6 publications

(4 citation statements)

References 81 publications

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“…Partly agreeing with our hypothesis two, there were no significant differences in soil CO 2 fluxes between RL and LL, which can also be explained by their similar bacterial abundance. Apart from soil bacterial communities, soil fungal communities also have potential effects on CO 2 fluxes (Lee et al, 2022).…”

Section: Effect Of Understory Species On Soil Co 2 Fluxesmentioning

confidence: 99%

“…Thus, even minor variations in soil GHG fluxes may have obvious effects on climate change. Over past decades, a number of field studies have been conducted to clarify the effects of plant species changes on soil GHG fluxes in forest ecosystems (Chen et al, 2020;Hsieh et al, 2021;Lee et al, 2022). However, most studies focus on forest ecosystems dominated by different tree components (Liu et al, 2014;Mazza et al, 2021;Quebbeman et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Understory species composition mediates soil greenhouse gas fluxes by affecting bacterial community diversity in boreal forests

Duan

Xiao²,

Cai³

et al. 2023

Front. Microbiol.

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IntroductionPlant species composition in forest ecosystems can alter soil greenhouse gas (GHG) budgets by affecting soil properties and microbial communities. However, little attention has been paid to the forest types characterized by understory vegetation, especially in boreal forests where understory species contribute significantly to carbon and nitrogen cycling.MethodIn the present study, soil GHG fluxes, soil properties and bacterial community, and soil environmental conditions were investigated among three types of larch forest [Rhododendron simsii-Larix gmelinii forest (RL), Ledum palustre-Larix gmelinii forest (LL), and Sphagnum-Bryum-Ledum palustre-Larix gmelinii forest (SLL)] in the typical boreal region of northeast China to explore whether the forest types characterized by different understory species can affect soil GHG fluxes.ResultsThe results showed that differences in understory species significantly affected soil GHG fluxes, properties, and bacterial composition among types of larch forest. Soil CO2 and N2O fluxes were significantly higher in LL (347.12 mg m−2 h−1 and 20.71 μg m−2 h−1) and RL (335.54 mg m−2 h−1 and 20.73 μg m−2 h−1) than that in SLL (295.58 mg m−2 h−1 and 17.65 μg m−2 h−1), while lower soil CH4 uptake (−21.07 μg m−2 h−1) were found in SLL than in RL (−35.21 μg m−2 h−1) and LL (−35.85 μg m−2 h−1). No significant differences between LL and RL were found in soil CO2, CH4, and N2O fluxes. Soil bacterial composition was mainly dominated by Proteobacteria, Actinobacteria, Acidobacteria, and Chloroflexi among the three types of larch forest, while their abundances differed significantly. Soil environmental variables, soil properties, bacterial composition, and their interactions significantly affected the variations in GHG fluxes with understory species. Specifically, structural equation modeling suggested that soil bacterial composition and temperature had direct close links with variations in soil GHG fluxes among types of larch forest. Moreover, soil NO3−−N and NH4+ − N content also affected soil CO2, CH4, and N2O fluxes indirectly, via their effects on soil bacterial composition.DiscussionOur study highlights the importance of understory species in regulating soil GHG fluxes in boreal forests, which furthers our understanding of the role of boreal forests in sustainable development and climate change mitigation.

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Section: Effect Of Understory Species On Soil Co 2 Fluxesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Understory species composition mediates soil greenhouse gas fluxes by affecting bacterial community diversity in boreal forests

Duan

Xiao²,

Cai³

et al. 2023

Front. Microbiol.

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“…However, plants can form symbiotic relationships with mycorrhizal fungi that firmly anchor carbon in the soil, and scientists have learned that a special type of mycorrhizal fungus, i.e., ectomycorrhizal fungi, is helping plants to take up carbon dioxide more quickly [17]. Therefore, the relationship between soil fungal communities and CO 2 emission fluxes needs to be dissected to provide a fungal perspective for the future development of efficient microbial management strategies to mitigate greenhouse gas emissions [18].…”

Section: Introductionmentioning

confidence: 99%

Soil Fungal Community Structure and Its Effect on CO2 Emissions in the Yellow River Delta

Guo

2023

IJERPH

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Soil salinization is one of the most compelling environmental problems on a global scale. Fungi play a crucial role in promoting plant growth, enhancing salt tolerance, and inducing disease resistance. Moreover, microorganisms decompose organic matter to release carbon dioxide, and soil fungi also use plant carbon as a nutrient and participate in the soil carbon cycle. Therefore, we used high-throughput sequencing technology to explore the characteristics of the structures of soil fungal communities under different salinity gradients and whether the fungal communities influence CO2 emissions in the Yellow River Delta; we then combined this with molecular ecological networks to reveal the mechanisms by which fungi adapt to salt stress. In the Yellow River Delta, a total of 192 fungal genera belonging to eight phyla were identified, with Ascomycota dominating the fungal community. Soil salinity was the dominant factor affecting the number of OTUs, Chao1 index, and ACE index of the fungal communities, with correlation coefficients of −0.66, 0.61, and −0.60, respectively (p < 0.05). Moreover, the fungal richness indices (Chao1 and ACE) and OTUs increased with the increase in soil salinity. Chaetomium, Fusarium, Mortierella, Alternaria, and Malassezia were the dominant fungal groups, leading to the differences in the structures of fungal communities under different salinity gradients. Electrical conductivity, temperature, available phosphorus, available nitrogen, total nitrogen, and clay had a significant impact on the fungal community structure (p < 0.05). Electrical conductivity had the greatest influence and was the dominant factor that led to the difference in the distribution patterns of fungal communities under different salinity gradients (p < 0.05). The node quantity, edge quantity, and modularity coefficients of the networks increased with the salinity gradient. The Ascomycota occupied an important position in the saline soil environment and played a key role in maintaining the stability of the fungal community. Soil salinity decreases soil fungal diversity (estimate: −0.58, p < 0.05), and soil environmental factors also affect CO2 emissions by influencing fungal communities. These results highlight soil salinity as a key environmental factor influencing fungal communities. Furthermore, the significant role of fungi in influencing CO2 cycling in the Yellow River Delta, especially in the environmental context of salinization, should be further investigated in the future.

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“…There is no published data on soil respiration for Volga region and for the territory of the Tatarstan Republic, especially for its broadleaved ecosystems, but the deciduous forests have a different intensity of root respiration and differ from coniferous ones in vegetation and climate, which form their own microbial, fungal soil communities that determine soil respiration [21]. For example, [22] showed that broad-leaved forests are characterized by higher carbon dioxide emissions compared to coniferous forests.…”

Section: Introductionmentioning

confidence: 99%

Carbon emission by soil respiration in a deciduous forest on the southern border of the taiga (Tatarstan, Russia)

Tishin,

Chizhikova

2023

E3S Web of Conf.

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Soil respiration contributes to the carbon emission losses of terrestrial ecosystems, so its accurate assessment is prerequisite to predict environmental risks resulting from Earth’s climate change. Seasonal dynamics of carbon dioxide fluxes from the soil surface of broad-leaved forest of the Middle Volga region, located on the southern border of the southern taiga subzone, were measured during the growing season. The forest belongs to the polygon Karbon-Povolzhye (Zelenodolsky district, Republic of Tatarstan, Russia). Seven measurements were taken from May to October 2022 in five replicates. The average monthly carbon emission during the growing season and pre-winter period was 0.19±0.01 g C h/m2. The largest emissions were observed at the end of June, the smallest – in September under the decreasing air and soil temperatures. Robust linear regressions were built to predict carbon emission depending on air temperature (n = 35, p < 0.001, r2 = 0.37), temperature of soil at a depth of 1 cm (n = 35, p < 0.001, r2 = 0.30), temperature of soil at a depth of 5 cm (n = 35, p-value < 0.01, r2 = 0.18). The data on carbon flux by soil are presented for the first time for the forest ecosystems of the Middle Volga region. The resulting emission estimates can be used to calculate the total carbon balance for the forest ecosystems of the Middle Volga region.

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Effects of vegetation shift from needleleaf to broadleaf species on forest soil CO2 emission

Cited by 6 publications

References 81 publications

Understory species composition mediates soil greenhouse gas fluxes by affecting bacterial community diversity in boreal forests

Understory species composition mediates soil greenhouse gas fluxes by affecting bacterial community diversity in boreal forests

Soil Fungal Community Structure and Its Effect on CO2 Emissions in the Yellow River Delta

Carbon emission by soil respiration in a deciduous forest on the southern border of the taiga (Tatarstan, Russia)

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