Assessment of climatic influences on net primary productivity along elevation gradients in temperate ecoregions

Trees Forests and People, Год журнала: 2024, Номер 18, С. 100657 - 100657

Опубликована: Авг. 20, 2024

Язык: Английский

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High-Altitude Medicinal Plants as Promising Source of Phytochemical Antioxidants to Combat Lifestyle-Associated Oxidative Stress-Induced Disorders

Pharmaceuticals, Год журнала: 2024, Номер 17(8), С. 975 - 975

Опубликована: Июль 23, 2024

Oxidative stress, driven by reactive oxygen, nitrogen, and sulphur species (ROS, RNS, RSS), poses a significant threat to cellular integrity human health. Generated during mitochondrial respiration, inflammation, UV exposure pollution, these damage cells contribute pathologies like cardiovascular issues, neurodegeneration, cancer, metabolic syndromes. Lifestyle factors exert substantial influence on oxidative stress levels, with mitochondria emerging as pivotal players in ROS generation equilibrium. Phytochemicals, abundant plants, such carotenoids, ascorbic acid, tocopherols polyphenols, offer diverse antioxidant mechanisms. They scavenge free radicals, chelate metal ions, modulate signalling pathways mitigate damage. Furthermore, plants thriving high-altitude regions are adapted extreme conditions, synthesize secondary metabolites, flavonoids phenolic compounds bulk quantities, which act form robust defence against including radiation temperature fluctuations. These promising sources for drug development, offering innovative strategies manage stress-related ailments enhance Understanding harnessing the potential of phytochemicals from represent crucial steps combating stress-induced disorders promoting overall wellbeing. This study offers comprehensive summary production physio-pathological aspects lifestyle-induced explores antioxidants. Additionally, it presents an appraisal medicinal antioxidants, highlighting their development creation therapeutic approaches.

Язык: Английский

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A comprehensive review on biomass energy system optimization approaches: Challenges and issues

International Journal of Hydrogen Energy, Год журнала: 2025, Номер 106, С. 1167 - 1183

Опубликована: Фев. 8, 2025

Язык: Английский

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Stand Age Affects Biomass Allocation and Allometric Models for Biomass Estimation: A Case Study of Two Eucalypts Hybrids

Forests, Год журнала: 2025, Номер 16(2), С. 193 - 193

Опубликована: Янв. 21, 2025

We studied the effects of stand age on allocation biomass and allometric relationships among component in five stands ages (1, 3, 5, 7, 8 years old) two eucalypts hybrids, including Eucalyptus urophylla × E. grandis tereticornis, Leizhou Peninsula, China. The stem, bark, branch, leaf, root from 60 destructively harvested trees were quantified. Allometric models applied to examine relationship between tree predictor variable (diameter at breast height, D, H). Stand was introduced into explore effect estimation. results showed following: (1) significantly affected distribution each component. proportion stem total increased with age, proportions leaf decreased first then age. (2) There close (i.e., components biomass, aboveground per tree) diameter height (D), (H), product (DH), square (D2H). measurement parameters (D, H, DH, D2H) could be assessment plantation. (3) equations that included as a complementary improved fit enhanced accuracy estimates. optimal independent for prediction model varied according organ. These indicate has an important influence allocation. considering improve carbon sequestration estimates plantations.

Язык: Английский

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Spatiotemporal Patterns and Interconnections of Forest Biomass and Economic Density in the Yellow River Basin, China

Forests, Год журнала: 2025, Номер 16(2), С. 358 - 358

Опубликована: Фев. 17, 2025

Forests are among the most diverse ecosystems on planet, and their biomass serves as a key measure for assessing biological productivity carbon cycle of terrestrial forest ecosystems. Recognizing factors that impact is essential health developing effective conservation strategies to preserve species diversity ecological equilibrium. This study considered explained variable, economic density explanatory human activities, land use, forestland protection control variables. Panel data encompassing 448 counties within Yellow River Basin (YRB) years 2008, 2013, 2018 were utilized inputs ArcGIS spatial analysis two-way fixed-effects modeling. approach aimed evaluate socio-economic biomass. The findings indicate that, (1) from both temporal viewpoints, distribution in upper reaches demonstrated an improvement over period 2008 2018. Notably, there was significant reduction middle lower sections, although levels remained substantially above average those regions. Throughout 2018, overall YRB displayed pattern, with elevated observed western areas diminished eastern (2) A one-unit increase led 1.002% In YRB, positive correlation between biomass, especially river. (3) upstream region, strongly negatively correlated cultivated but significantly positively protection. reaches, population growth arable expansion decrease primary industry development urbanization promoted growth. industries other than planting, such forestry industry, can contribute Moreover, downstream area, strong negative number permanent residents We recommend modifications activities enhance ecosystem stability.

Язык: Английский

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Improving Total Carbon Storage Estimation Using Multi-Source Remote Sensing

Forests, Год журнала: 2025, Номер 16(3), С. 453 - 453

Опубликована: Март 3, 2025

Accurate estimations of forest total carbon storage are essential for understanding ecosystem functioning and improving management. This study investigates how multi-source remote sensing data can be used to provide accurate diameter at breast height (DBH) the plot level, enhancing biomass across 39.41 × 104 km2. The is focused on Yunnan Province, China, which characterized by complex terrain diverse vegetation. Using ground-based survey from hundreds plots model calibration validation, methodology combines data, machine learning algorithms, statistical analysis develop models estimating DBH distribution regional scales. Decision tree showed best overall performance. effectiveness improved when stratified climatic zones, highlighting importance environmental context. Traditional methods based kNDVI index had a mean squared error (MSE) 2575 t/ha an R2 value 0.69. In contrast, combining model-estimated values with resulted in substantially lower MSE 212 significantly 0.97. results demonstrate that incorporating not only reduced prediction errors but also model’s ability explain variability. addition, region classification further increased accuracy, suggesting future efforts should consider zoning. Our analyses indicate water availability during cool dry periods this monsoon-influenced was especially critical influencing different subtropical zones. summary, integrates high-resolution advanced algorithms estimation. findings suggest approach support management contribute research balance assessment.

Язык: Английский

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Soil and forest floor carbon balance in drained and undrained hemiboreal peatland forests

Опубликована: Май 24, 2024

Abstract. Drainage of organic soil is associated with increasing carbon (C) efflux, which typically linked to losses in C stock. In previous studies, drained peatland forests has been reported as both a sink and source depending on, e.g., nutrient moisture regimes. However, most the earlier research was done boreal sites, impact regime on stock likely vary across different climatic conditions ecosystems, further vegetation. this study, we examined forest floor (including ground vegetation) balance undrained hemiboreal evaluate drainage balance. A two-year study conducted 26 stands nutrient-rich Baltic states (Estonia, Latvia, Lithuania). To assess balance, measurements heterotrophic total respiration were carried out, along evaluation influx into through litter, including fine foliar litterfall, herbaceous vegetation, roots trees. The CO2 emissions did not significantly differ between countries; therefore, one emission factor can be applied characterize States. It observed that litter compensate for caused by respiration, neither nor soils proven losing their Comparing balances it found reduces sequestration 0.43±2.69 t ha−1 year−1.

Язык: Английский

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Disentangling the contributions of ecological conditions to biomass in longleaf pine forests

Forest Ecology and Management, Год журнала: 2024, Номер 572, С. 122297 - 122297

Опубликована: Сен. 19, 2024

Язык: Английский

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Comment on egusphere-2024-1397

Опубликована: Июнь 14, 2024

Abstract. Drainage of organic soil is associated with increasing carbon (C) efflux, which typically linked to losses in C stock. In previous studies, drained peatland forests has been reported as both a sink and source depending on, e.g., nutrient moisture regimes. However, most the earlier research was done boreal sites, impact regime on stock likely vary across different climatic conditions ecosystems, further vegetation. this study, we examined forest floor (including ground vegetation) balance undrained hemiboreal evaluate drainage balance. A two-year study conducted 26 stands nutrient-rich Baltic states (Estonia, Latvia, Lithuania). To assess balance, measurements heterotrophic total respiration were carried out, along evaluation influx into through litter, including fine foliar litterfall, herbaceous vegetation, roots trees. The CO₂ emissions did not significantly differ between countries; therefore, one emission factor can be applied characterize States. It observed that litter compensate for caused by respiration, neither nor soils proven losing their Comparing balances it found reduces sequestration 0.43±2.69 t ha⁻¹ year⁻¹.

Язык: Английский

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Comparison of Carbon Stocks in Dominant Species of the Natural Broadleaved Forest in Mt. Gariwang

Journal of Agriculture & Life Science, Год журнала: 2024, Номер 58(5), С. 59 - 69

Опубликована: Окт. 30, 2024

Язык: Английский

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