Soil Aggregation, Aggregate Stability, and Associated Soil Organic Carbon in Huron Mountains Forests, Michigan, USA

Forests, Год журнала: 2025, Номер 16(2), С. 219 - 219

Опубликована: Янв. 24, 2025

Soil organic carbon (SOC) plays a critical role in regulating the global (C) cycle, with forest soils serving as significant C sinks. aggregate stability and distribution of SOC different fractions would be affected by types. In this study, we investigate dynamics within soil across three main types Huron Mountains, Michigan, USA: white birch–eastern hemlock mixed forest, eastern-hemlock-dominated sugar maple forest. We hypothesize that variations species composition depth influence storage through mechanisms such root interactions, microbial activity, structure development. samples were collected from intervals (0–20 cm, 20–40 40–60 cm) analyzed for size content. The results showed stocks differ significantly types, exhibiting highest proportion large aggregates (>1.0 mm), which contribute to more stable structures. This type also had total mass mean weight diameter, indicating enhanced stability. contrast, displayed greater smaller lower macroaggregate-to-microaggregate ratio, suggesting fewer soils. closely linked size, macroaggregates containing SOC. These differences can attributed several underlying mechanisms, including plant physical properties soil. Forests diverse compositions, tend support complex systems communities, leading improved aggregation storage. Additionally, management practices selective thinning mixed-species planting these processes enhancing structure, increasing biomass, promoting health. interactions play crucial sequestration improving Our findings emphasized importance influencing stability, offering insights into study provided reference deeper understanding potential ecosystems supports development sustainable strategies mitigate climate change.

Язык: Английский

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Influence of Thinning on Carbon Balance in Natural Regeneration of Pinus pinaster in Portugal

Land, Год журнала: 2025, Номер 14(3), С. 493 - 493

Опубликована: Фев. 27, 2025

The maritime pine (Pinus pinaster) is the main conifer species in Portugal, occurring mainly central and northern regions of country. In addition to its environmental significance, it plays an important socio-economic role, supported by a robust forest sector. face climate change driven release CO2 into atmosphere, forests play essential role mitigating these changes storing large amounts carbon their biomass. This study assesses impact management, focusing on thinning, accumulation naturally regenerating municipality Boticas, Portugal compares scenarios with without intervention. To simulate growth scenarios, Modispinaster software used, through mathematical models adjusted for input initial field data, generates evolution regarding biomass accumulation. Additionally, allows visualization forest’s dendrometric characteristics throughout cycle, enabling creation balance analysis across multiple scenarios. results demonstrate that management based thinning increases retention, reducing early mortality promoting larger diameter trees. Although natural initially accumulate more carbon, reduction competition managed greater from 24th year onwards, reaching 178 tons at end contrast 143 unmanaged areas. result (natural) was negative (−18 tons), while forest, positive (54 tons). supports thesis although intense less frequent than events, effective absence interventions. Thinned optimize Pinus pinaster, improving long-term retention mortality. Managed show balance, highlighting importance sustainable strengthening ecological resilience.

Язык: Английский

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Forest Carbon Sequestration Functions and Mitigation Strategies for Global Climate Change

IntechOpen eBooks, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

This chapter aims to explore the critical role of forests in mitigating global climate change by enhancing carbon sequestration. We synthesized research sink, showcasing their significant sink potential. Drawing on previous studies, we introduced contributions various forest types and management practices bolster Case studies successful nature-based solutions (NbS) projects are highlighted illustrate effective strategies for increasing sinks. Additionally, outlined methodologies quantifying sequestration, encompassing field-based approaches, remote sensing technologies, advanced modeling techniques. Sustainable were evaluated, with a focus afforestation, reforestation, conservation, efficient utilization resources, including wood products renewable energy integration. Furthermore, discussed existing policy frameworks, particular emphasis REDD+ initiative, provide recommendations enhance effectiveness promoting In summary, this offers holistic perspective how can be leveraged as vital tool combating change.

Язык: Английский

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How Do Climate and Latitude Shape Global Tree Canopy Structure?

Forests, Год журнала: 2025, Номер 16(3), С. 432 - 432

Опубликована: Фев. 27, 2025

Understanding global patterns of tree canopy height and density is essential for effective forest management conservation planning. This study examines how these attributes vary along latitudinal gradients identifies key climatic drivers influencing them. We utilized high-resolution remote sensing datasets, including a 10 m resolution dataset aggregated to 1 km computational efficiency, derived from ground-based measurements. To quantify the relationships between structure environmental factors, we applied nonlinear regression models climate dependency analyses, incorporating bioclimatic variables WorldClim dataset. Our finding that latitude exerts dominant but asymmetric control on density, with tropical regions exhibiting strongest correlations. Tree follows quadratic pattern, explaining 29.3% variation, this relationship most pronounced in tropics (−10° 10° latitude, R2 = 91.3%), where warm humid conditions promote taller forests. Importantly, effect differs by hemisphere, Southern Hemisphere (R2 67.1%) showing stronger dependence than Northern 35.3%), indicating asymmetry growth dynamics. exhibits similar trend weaker predictive power 7%); however, within tropics, explains 90.6% underscoring strong constraints biodiverse ecosystems. Among isothermality (Bio 3) identified as determinant 50.8%), suggesting stable temperature fluctuations foster strongly influenced mean diurnal range 2, 36.3%), emphasizing role daily thermal variability distribution. Precipitation-related factors 14 Bio 19) moderately explain (~33%) (~25%), reinforcing moisture availability structuring advances ecology research integrating data robust climate-driven modeling, revealing previously undocumented hemispheric asymmetries biome-specific dependencies. These findings improve offer new insights strategies, particularly vulnerable change.

Язык: Английский

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Associations between stand spatial structures and carbon sequestration on natural Larix gmelinii forests in Northeast China

Trees Forests and People, Год журнала: 2025, Номер unknown, С. 100837 - 100837

Опубликована: Март 1, 2025

Язык: Английский

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Short-Term Effects of Thinning on Vegetation Carbon Dynamics and Soil Respiration in Secondary Broadleaf Forests

Forests, Год журнала: 2024, Номер 15(12), С. 2109 - 2109

Опубликована: Ноя. 28, 2024

As an important means of near-natural management in secondary forests, thinning effectively enhances the growth status forest trees, and increases overall yield carbon sequestration capacity floor through rational stand regulation. This study focused on subtropical broadleaf forests mountainous regions western Zhejiang, China, involved three treatment groups: a high-intensity group (HT) (retaining trees with diameter greater than 8 cm removing shrub-layer vegetation), low-intensity (LT) 5 control plot (no treatment) (CK). The aimed to investigate effects different intensities stocks, soil respiration, environmental factors, as well assess how modifications impact floor. results illustrate following: (1) biomass individual under HT were significantly compared other groups. Conversely, stock arboreal layer was higher LT treatments. (2) Thinning operations increased stocks improved fertility. (3) High-intensity moisture both surface subsurface layers, showing highest levels. (4) One year after thinning, organic matter (SOM) significantly, rising by 30.86% 21.84% CK. (5) In comparison CK, showed significant increase respiration rates, which led CO2 N2O emissions from while also suppressing CH4 uptake. concludes that can enhance tree improve fertility, reduce greenhouse gas emissions. supports sustainable development ecosystems effective management.

Язык: Английский

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