Examining the stoichiometry of C:N:P:K in the dynamics of foliar-litter-soil within dominant tree species across different altitudes in southern China

Global Ecology and Conservation, Journal Year: 2024, Volume and Issue: 51, P. e02885 - e02885

Published: March 5, 2024

Ecological stoichiometry assessment provides insight into the interactions between foliar-litter-soil dynamics among dominant tree species and facilitates their conservation. However, little research has been carried out on such trends within mixed forest ecosystems in national nature reserves globally. The present study fills this knowledge gap by examining ecological of at various altitudes desirable southern China. This concentrates six representative plant communities, each pivotal maintaining carbon (C), nitrogen (N), phosphorus (P), potassium (K) balances, along with energy flows. selected communities encompass two plantations comprising Cunninghamia lanceolata Phyllostachys edulis four natural forests, including evergreen broad-leaved (Manglietia conifera), deciduous (Daphniphyllum macropodum Acer davidii), consisting Fagus longipetiolata, coniferous (Tsuga chinensis). Furthermore, involved measurement C, N, P, K contents foliage, litter, soil. outcomes revealed significant variations foliar, soil stoichiometric attributes across communities. Correlation analysis highlighted substantial positive associations N P foliar litter components, while exhibited insignificance. Broad-leaved forests generally displayed higher leaf compared to forests. exceptions observed content M. conifera D. F. longipetiolata. high-altitude T. chinensis one highest ratios. Notably, demonstrated richness but deficiency K, impacting growth limiting availability. Additionally, low hindered decomposition. nutrient ratios other nutrients remained relatively stable except for C: which were consistent homeostasis theory. These findings provide scientific evidence cycle regulation, ecosystem protection, valuable insights complex relationships

Language: Английский

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Assessing the conjunction of environmental sustainability and tourism development along Chinese waterways

Ecological Indicators, Journal Year: 2024, Volume and Issue: 166, P. 112281 - 112281

Published: June 25, 2024

The complex interplay between tourism expansion and environmental conservation responsibilities necessitates the adoption of sustainable practices in aquatic ecosystems around world. Still, existing scholarly investigations predominantly focus on dynamics individual rivers, resulting considerable gaps our comprehension large river network systems. To redress these gaps, this study examines potential effects development sustainability Yangtze River its tributaries China. Furthermore, it evaluates government support interventions aimed at strengthening while proposing specific improvements. In 2023, a comprehensive survey involving 982 stakeholders provided invaluable insights into multilayered nexus sustainability. We analyzed carefully gathered data from thoughtfully designed questionnaire using rigorous reliability assessments, correlation analyses, regression techniques. Cronbach's alpha coefficients ranging 0.83 to 0.95 results, indicating robust reliability. findings reveal positive correlations governmental sustainability, with visitor management showing strongest (r = 0.66**). analysis reveals that contribute both economic (R2 0.61 ∼ R2 0.77, ΔR2 16) 0.51 0.62, 11) Thus, highlights importance intervention achieving Therefore, advocates coordinated approach maximize policy formulation implementation benefits. This provides actionable for researchers, stakeholders, policymakers alike promote practices.

Language: Английский

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Artificially remediated plants impact soil physiochemical properties along the riparian zones of the three gorges dam in China

Frontiers in Forests and Global Change, Journal Year: 2024, Volume and Issue: 7

Published: Feb. 2, 2024

River ecosystem biodiversity and biogeochemical processes are shaped largely by riverside vegetation soil. Moreover, river ecosystems provide ecological services influenced the surrounding soil interactions. However, mechanisms which artificially remediated plants (ARPs) riparian interact to these benefits still unclear among various ARPs. This study fills this gap examines impact of ARPs along zones Three Gorges Dam (TGD) in Chongqing City, China. We sampled four varieties from Ruxi Basin TGD. These included Cynodon dactylon , Hemarthria altissima Taxodium disticum Salix mastudana . Our results indicated substantial changes physicochemical parameters. Comparably, T. distigum contains significantly higher chemical contents. Interestingly, principal component analysis explained almost 100% variance for all plant species study. different types properties were positively correlated using Pearson correlation ( p < 0.05). Furthermore, exhibited strong negative correlations with physical characteristics (up r = −1.00). Specifically, explain interactions between areas Hence, may facilitate restoration land management degraded areas.

Language: Английский

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Anti‐seasonal flooding drives substantial alterations in riparian plant diversity and niche characteristics in a unique hydro‐fluctuation zone

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(8)

Published: Aug. 1, 2024

Abstract Human‐induced disturbances such as dam construction and regulation have led to widespread alterations in hydrological processes thus substantially influence plant characteristics the hydro‐fluctuation zones (HFZs). To reveal utilization of limited resources mechanisms inter‐specific competition species co‐existence communities based on niche breadth overlap under different HFZs Three Gorges Reservoir (TGR) China, we conducted a field investigation with 368 quadrats effects diversity characteristics. The results showed anti‐seasonal flooding precipitated gradual disappearance original diverse niches, resulting reduction richness functional more obvious among similar resource requirements. Annuals, perennials shrubs accounted for 71.23%, 27.39% 1.37%, respectively, suggesting that annuals flood‐tolerant riparian herbs were favored novel conditions. A consistent increase number, Shannon‐Wiener index Simpson dominance altitude was inconsistent hump‐shaped diversity–disturbance relationship intermediate disturbance hypothesis, while opposite trend observed Pielou evenness index. This distribution pattern might be caused by several synergetic attributes (e.g., submergence depth, tolerant capacity flooding, life form, dispersal mode competition). Vegetation types shifted from xerophytes mesophytes eventually hygrophytes increasing time HFZs. Hydrological proved paramount driver vegetation analysis provided first insights competition, which could germinate quickly after soil drainage achieve greatest competitive advantages occupy larger space than other plants. still early stage primary succession forests. Therefore, restoration strategies should biased towards herbaceous plants, due better environmental adaptability, supplemented small trees. establish complete reference system restoration, natural monitory plots stages established TGR, their conditions, community structures relationships further analyzed.

Language: Английский

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The dynamics of bacterial communities during leaf decomposition of various species combinations in riparian forest buffers in China

Forest Ecology and Management, Journal Year: 2025, Volume and Issue: 584, P. 122607 - 122607

Published: March 2, 2025

Language: Английский

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Exploring the Mental Health Benefits of Urban Green Spaces Through Social Media Big Data: A Case Study of the Changsha–Zhuzhou–Xiangtan Urban Agglomeration

Sustainability, Journal Year: 2025, Volume and Issue: 17(8), P. 3465 - 3465

Published: April 13, 2025

Urban green spaces (UGSs) provide recreational and cultural services to urban residents play an important role in mental health. This study uses big data mining techniques analyze 62 parks the Changsha–Zhuzhou–Xiangtan agglomeration (CZXUA) based on such as points of interest (POIs), areas (AOIs), user comments from popular social media platform Dianping. In addition, authors apply sentiment analysis using perceptual dictionaries combined with geographic information identify text emotions. A structural equation model (SEM) was constructed IBM SPSS AMOS 24.0 software investigate relationship between five external features, types services, nine landscape elements, four environmental factors, tourist The results show that UGS factors all have positive effects residents’ emotions, elements having greatest impact. other similar moods. various UGSs, natural vegetation water tend evoke emotions residents, while artificial roads, squares, buildings elicit more varied emotional responses. research provides science-based support for design management parks.

Language: Английский

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Ecological risk assessment and prediction of riparian zones in the Jiangsu section of the Yangtze River from a spatiotemporal perspective

Ecological Indicators, Journal Year: 2025, Volume and Issue: 174, P. 113492 - 113492

Published: April 22, 2025

Language: Английский

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Genetic variability and population divergence of Rhododendron platypodum Diels in China in the context of conservation

Frontiers in Forests and Global Change, Journal Year: 2024, Volume and Issue: 7

Published: March 14, 2024

Genetic diversity in endangered species is of special significance the face escalating global climate change and alarming biodiversity declines. Rhododendron platypodum Diels, an endemic to China, distinguished by its restricted geographical range. This study aimed explore genetic differentiation among populations, gathering samples from all four distribution sites: Jinfo Mountain (JFM), Zhaoyun (ZYM), Baima (BMM), Mao’er (MEM). We employed 18 pairs Simple Sequence Repeat (SSR) primers ascertain structural characteristics these further utilized 19 phenotypic data points corroborate observed populations. These detected 52 alleles, with average number alleles ( Na ) being 2.89, effective Ne 2.12, heterozygosity Ho 0.57, expected He 0.50. array demonstrates efficacy reflecting R. ’s diversity. SSR-based analysis populations yielded , Shannon index I values ranging 0.47 0.65, 0.36 0.46, 0.53 0.69, respectively. Notably, ZYM population emerged as most genetically diverse. Further analysis, incorporating molecular variance, principal component UPGMA cluster structure highlighted significant between Chongqing (BMM, JFM, ZYM) Guangxi (MEM) Morphological corroborated findings. Additionally, marked morphological distinctions were evident three ZYM). suggests that, despite regional differentiation, overall relatively constrained compared other within genus. Consequently, conservation hinges critically on preserving protecting distinct

Language: Английский

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Ecological-economic assessment of forest land degradation neutrality in the Indus River Basin of Pakistan

Environment Development and Sustainability, Journal Year: 2024, Volume and Issue: unknown

Published: July 10, 2024

Language: Английский

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Assessing leaf physiological traits in response to flooding among dominant riparian herbs along the Three Gorges Dam in China

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(6)

Published: June 1, 2024

Abstract Dams worldwide have significantly altered the composition of riparian forests. However, research on functional traits dominant herbs experiencing flooding stress due to dam impoundment remains limited. Given high plasticity leaf and their susceptibility environmental influences, this study focuses along Three Gorges Hydro‐Fluctuation Zone (TGHFZ). Specifically, it investigates how six physiological leading herbs—carbon, nitrogen, phosphorus, stoichiometric ratios—adapt periodic in TGHFZ using cluster analysis, one‐way analysis variance (ANOVA), multiple comparisons, Pearson correlation principal component (PCA). We categorized 25 herb species into three plant types (PFTs), noting that from same family tended fall PFT. Notably, carbon content (LCC) exhibited no significant differences across various PFTs or altitudes. Within forests, different employ distinct adaptation strategies: PFT‐I invest structural components enhance resistance; PFT‐II, mostly comprising gramineous plants, responds prolonged by rapid growth above water; PFT‐III, encompassing nearly all Compositae annual with vigorous rhizome seed production. Soil water (SWC) emerges as primary factor influencing TGHFZ. By studying response plants artificial flooding, we intend reveal survival mechanisms under adverse conditions lay foundation for vegetation restoration

Language: Английский

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