Effects of changing riparian topography on the decline of ecological indicators along the drawdown zones of long rivers in China

Frontiers in Forests and Global Change, Год журнала: 2024, Номер 7

Опубликована: Янв. 19, 2024

Riparian topographical features can drive a suite of ecological indicators (EIs) that shape the river ecosystem. The mechanisms EIs reflect provide several ecosystem services. We know little about responses (indicators plant cover, regeneration, exotics, habitat, erosion, and stressors) to changing stream-channel width, riparian elevation lengthy drawdown zones (upstream, midstream, downstream) long rivers. have discovered characteristics affect buffer areas differently by using rapid field-based method with 297 transects in inundated regions along Yangtze River other 36 linked tributaries China. Changing widths was most effective on downstream least at midstream. exotic parameters were affected (with range −0.36 < r 0.401) widths, as determined Pearson correlation ( p 0.05). In contrast, width had uppermost impact upstream lowermost downstream; significant habitat ≤ 0.787). followed pattern negatively associated exotics −0.645 −0.594) positively correlated regeneration 0.569). These results reaffirm imperative need for studies regionally dependent maintained under same management strategies regardless their features. Future policies should be formulated enhance service provision, promoting sustainable use extensive ecosystems while considering EIs. Additionally, these future acknowledge zone factors within network. Furthermore, additional measures are conserve prevent further destruction.

Язык: Английский

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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, Год журнала: 2024, Номер 51, С. e02885 - e02885

Опубликована: Март 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

Язык: Английский

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Assessing the impacts of ecotourism activities on riparian health indicators along the Three Gorges Reservoir in China

Ecological Indicators, Год журнала: 2023, Номер 155, С. 111065 - 111065

Опубликована: Окт. 14, 2023

Ecotourism activities in riparian zones have heightened concern about protecting health indicators (RHIs). is growing significantly, but its management requires trade-offs between recreational and ecological functions. This paper aims to show how people's affect RHIs along mega-reservoirs around dams. Investigators collected data from 301 transects inside the of Three Gorges Dam Reservoir (TGDR) China, taking rural, rural–urban transitional, urban land-use patterns into account. The Kruskal-Wallis tests (p < 0.01) found that RHI index was significantly greater than activity value TGDR, with being higher transitional basins. Pearson correlation 0.05) revealed were associated both positive negative aspects RHIs, significant correlations ranging low moderate. key factors ecotourism determined by principal component analysis explained 65.36 % total variation. Furthermore, hierarchical cluster these characteristics distributed differently patterns. Findings indicated zoning might be an essential option for long-term use zone ecosystem services water resources. Consequently, people should made aware importance governments support progressive policies lead a change attitudes actions towards conservation.

Язык: 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, Год журнала: 2024, Номер 7

Опубликована: Фев. 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 &lt; 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.

Язык: Английский

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Impact of urbanization on the spatial and temporal evolution of the water system pattern: A study of the Wuhan metropolitan area in China

Ecological Indicators, Год журнала: 2023, Номер 153, С. 110408 - 110408

Опубликована: Июнь 3, 2023

With the rapid economic development and continuous urbanization, status of river ecosystems is undergoing profound changes. Therefore, quantitative assessment impact urbanization on water system highly desirable. Considering Wuhan metropolitan area as study area, this constructed an indicator used entropy technique for order preference similarity to ideal solution (TOPSIS) method quantify level each city. The process was divided into four periods based results measurement. Then, theory landscape ecology establish evaluation index pattern. Finally, grey relational analysis model analyze relationship between evolution patterns under different periods. indicate that (1) from 2000 2019, exhibited increasing trend, while indicators attribute two complexity showed a decline. (2) A negative correlation observed pattern indicators, with ranging 0.55 0.62 (maximum value 1). shows most significant characteristics systems. (3) After classifying stages, further increased 0.95. (4) highest in given are class area-weighted mean patch fractal dimension, edge density, number patches. Management can judge corresponding human activities relation current stage targeted protection

Язык: 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, Год журнала: 2024, Номер 7

Опубликована: Март 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

Язык: Английский

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Pathways to enhance the efficiency of forestry ecological conservation and restoration: empirical evidence from Heilongjiang Province, China

Frontiers in Forests and Global Change, Год журнала: 2024, Номер 7

Опубликована: Апрель 5, 2024

This paper proposes a theoretical framework for assessing ecological protection and restoration from the perspective of efficiency. We applied super-efficiency Slack-based measure model to examine social economic impacts resource consumption transformation in Heilongjiang Province, China. Additionally, convergence analysis was used evaluate test impact standard deviation ellipse method on regional sustainability. The results indicated that land use structure unstable; conversion rate low; average Ecological efficiency only 0.343 terms structure. Funds forest have significant effectiveness transformation. Implementing Chinese project improves level communities. center gravity moved greatly years when forestry investment increased. Technological transfer diffusion, experience imitation environmental regulation, eventually convergent steady-state levels different regions are necessary improve development with low quality efforts should be made reduce intensity, increase fund utilization efficiency, form comprehensive systematic system environment governance through reasonable enhancement regulations, increased technological advancement, funds restoration.

Язык: Английский

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

Environment Development and Sustainability, Год журнала: 2024, Номер unknown

Опубликована: Июль 10, 2024

Язык: Английский

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Identifying the interfaces between perceived multi-hazards and socio-ecological risks to strengthen local adaptations

Journal of Environmental Management, Год журнала: 2023, Номер 351, С. 119708 - 119708

Опубликована: Дек. 11, 2023

Язык: Английский

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A research synthesis on successful educational practices and student outcomes for physical education in schools

Frontiers in Psychology, Год журнала: 2023, Номер 14

Опубликована: Окт. 2, 2023

Although successful educational practices (SEPs) in higher education institutions have well-established student outcomes, the vast majority do not meet physical standards schools. Despite promising nature of policy initiatives supporting schools, there is scant evidence how these SEPs affect outcomes. This review aimed to determine status literature and type regarding school SEPs. Several studies demonstrated that contribute directly or indirectly improving Three objectives were examined synthesized our SEP research findings. The first goal identify different types impacts on students second provide educators, principals, policymakers with a unified comprehensive framework. Lastly, we suggestions for future research. identified 45 met inclusion criteria. Our reviewed documented individual level. It encompasses both students' instrumental abilities their sense self-esteem motivation. Secondly, interpersonal relationships, reducing conflict, increasing group cohesion are important components at Finally, factors community level, including absenteeism reduction, parental involvement, changes attitudes toward school. Current supports effectiveness practices. stresses importance implementing policies maximize concludes by discussing findings implications directions.

Язык: Английский

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