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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Comparative analysis of rhizosphere soil between three plantation types in Karst Rocky Desertification area by widely targeted metabolomics

PeerJ, Journal Year: 2025, Volume and Issue: 13, P. e19131 - e19131

Published: March 31, 2025

Understanding the differences in rhizosphere soil microbial metabolites between severely and mildly rocky desertified areas is crucial for developing ecological restoration strategies land management measures desertification regions. This study systematically analyzed of Toona sinensis , Vernicia fordii Cornus wilsoniana Western Hunan using untargeted metabolomics. The results showed that types quantities primary secondary were significantly lower than those areas. Additionally, under severe conditions, 15 common compounds ( e.g. 17a-estradiol, adenine, all-trans-retinoic acid) increased three tree species. These may provide defense mechanisms plants to adapt harsh environments. KEGG metabolic pathway analysis revealed shared six enriched pathways, which play an important role biosynthesis such as phenylpropanoids unsaturated fatty acids. By revealing metabolites, this not only deepens understanding ecosystems but also provides valuable scientific evidence sustainable management.

Language: Английский

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Natural vegetation restoration promotes soil quality improvement in rocky desertification areas of southwestern China

Plant and Soil, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Language: Английский

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Bacterial communities and soil functionality in artificially remediated vegetation of the three gorges reservoir zone

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: April 28, 2025

Riparian zones maintain biodiversity, cyclic nutrients, and regulate water quality. However, their stability is increasingly threatened by human activities such as dam construction climate variability. This study focuses on the riparian of Three Gorges Dam Reservoir (TGDR), a region marked fluctuating levels subtropical southeast monsoon climate. We investigated seasonal vegetation-specific dynamics soil properties microbial communities in dominated artificially remediated plants (ARPs) TGDR. The selected ARP species included herbaceous Cynodon dactylon (CD) Hemarthria altissima (HA), known for capacity rapid stabilization, tree Salix matsudana (SM) Taxodium distichum (TD), which enhance nutrient cycling through litter inputs root exudates. These were evaluated across spring (T1), summer (T2), autumn (T3). Our analysis 360 samples led to generation high-quality sequences that provided insights into diversity. Principal component identified organic matter, ammonium nitrogen, total nitrogen main contributors property variance, explaining 53.68% T1, 51.52% T2, 56.37% T3 variance (p < 0.01). Correlation highlighted positive relationship between pH Nitrospirae (r = 0.603) Proteobacteria 0.558). Enzyme activity varied season, with acid phosphatase peaking invertase highest T1. also made functional predictions pathways pertinent metabolism, genetic information processing, environmental signal transduction. There shifts metabolic pathways, an increase carbohydrate metabolism via TD. In addition, there was rise amino CD. assessment diversity uncovered 68 bacterial phyla, Acidobacteria emerging dominant taxa. results indicate ARPs positively influence health, cycling, overall ecosystem integrity. findings hold significant implications restoration regions experiencing changes.

Language: Английский

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Responses of soil fertility indicators and fungi community diversity to fertilization strategies in legume-grass mixtures

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: May 8, 2025

Introduction Alfalfa-grass binary mixtures outperformed monocultures in nutrient use, soil content, and biomass yield. Nonetheless, the impact of fertilization strategies on fungal community composition ecological functions legume-Grass remains under-researched. This study aimed to explore effects different distribution environmental characteristics. Methods A field experiment Gansu, China, has been conducted five strategies—no (CK), three partial methods (+PK, +NK, +NP), balanced (+NPK)—on population richness, composition, drivers. Rhizosphere soils from treatments were sampled investigated using high-throughput ITS sequencing. Results Compared CK, +NPK led higher capabilities ( P &lt; 0.05), organic matter (SOM), available nitrogen (AN), phosphorus (AP), potassium (AK) increased by an average 29.7 %, 42.3 101.2 24.3 respectively; alkaline phosphatase (APA), catalase (CAT), sucrase (SA) 56.6 31.8 46.7 microbial carbon (SMBC), (SMBN), (SMBP) 64.8 65.1 60.4 respectively. The dominant fungi rhizosphere Mortierellomycota Ascomycota, accounting for 82.2%-92.3%. species richness was highest +PK treatment. From NMDS RDA analysis, it can be discerned that SA, AK, CAT key factors influencing structure inter-root alfalfa; SOM awnless brome. Discussion Our findings optimal fertilizer strategy mixtures. provided a technical basis scientific application development local mixed grassland ecosystems.

Language: Английский

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Afforestation-Induced Shifts in Soil Bacterial Diversity and Community Structure in the Saihanba Region

Microorganisms, Journal Year: 2024, Volume and Issue: 12(3), P. 479 - 479

Published: Feb. 27, 2024

Afforestation plays a pivotal role in ecosystem restoration, exemplified by the Saihanba Mechanized Forest Farm, world’s largest planted forest; however, assembly mechanisms and interactions of soil microbial communities such forests remain inadequately understood. This study aimed to elucidate impact different afforestation tree species, namely Larix gmelinii var. principis-rupprechtii, Picea asperata, Pinus sylvestris mongolica, on bacterial diversity community structure comparison grassland. Sixty samples were collected at 20 cm depth, high-throughput sequencing was employed identify assess their with environmental factors. A total 6528 operational taxonomic units (OTUs) identified, Solirubrobacter, Conexibacter, Bacillus, Massilia, Gaiella, Acidibacter, Vicinamibacter being dominant genera. significantly impacted alpha diversity, notable influence from key chemical properties, including available phosphorus (AP), cation exchange capacity (CEC), carbon-to-nitrogen ratio organic matter (SOM-C/N). The Mantel test highlighted pH, Normalized Difference Vegetation Index (NDVI), spatial variable (dbMEM) as primary factors influencing demonstrated deterministic homogeneous selection, wherein SOM-C/N emerged significant factor dissimilarity communities. Furthermore, plantation soils exhibited more complex network than grassland soil, highlighting crucial vegetation changes providing valuable insights into response during reforestation process.

Language: Английский

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Knowledge Mapping Analysis of Karst Rocky Desertification Vegetation Restoration in Southwest China: A Study Based on Web of Science Literature

Agronomy, Journal Year: 2024, Volume and Issue: 14(10), P. 2235 - 2235

Published: Sept. 27, 2024

Karst rocky desertification (KRD) is a serious ecological and environmental issue, hindering the sustainable socio-economic development of karst area. To scientifically control this lots studies on KRD vegetation restoration have been conducted in past few decades. In present study, systematic review research progress future trends was conducted. The results showed following: (1) Studies began 1990s could be divided into four following stages: germination (1993–2002), initial (2003–2010), steady growth (2011–2016), rapid (2017–2023); (2) hot topics included theoretical implications, strategies technologies, responses to restoration, coupling with landscape resource enhancement; (3) frontiers were as follows: classification effectiveness types, impacts soil microorganisms erosion, influences engineering land use relationships between restorations ecosystem structural functions. Finally, prospects proposed from methods, perspectives, content, shortcomings. This study provided valuable references for in-depth field restoration.

Language: Английский

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Soil carbon emissions and influential factors across various stages of vegetation succession in vegetated concrete

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: March 12, 2024

After ecological restoration of high and steep slopes in the project disturbed area, soil properties, microorganisms, litter types root change with succession vegetation cover communities. However, effects different successional stages on respiration dynamics remain unclear. To elucidate trends drivers context succession, we used spatio-temporal alternative applied research. Vegetated concrete-restored (VC) predominantly herbaceous (GS), shrub (SS), arborvitae (AS) were selected, naturally restored (NS) as control. SRS1000 T carbon flux measurement system was to monitor rate. The results showed that (R

Language: Английский

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Study on the Effect and Enhancement of Near-Natural Integrated Plant Positioning Configuration in the Hilly Gully Region, China

Forests, Journal Year: 2024, Volume and Issue: 15(5), P. 841 - 841

Published: May 11, 2024

The establishment of protective forests plays a crucial role in mitigating soil erosion on slopes within hilly and gully regions. However, practical applications, the configuration is intricate diverse, suitability rationality different patterns for various slope sections have not been thoroughly investigated. This study focuses 40-year-old artificial forest, examining 16 top, middle, lower slopes. It compares growth conditions, community structure stability, characteristics saturated soil’s hydraulic conductivity. findings indicate that top should be identified as critical area protection. optimal this “tree + grass” pattern with spacing 5 m × m, which promotes tree species effectively reduces surface runoff gravel particles ranging from 1 cm to 3 diameter. On middle slope, shrub proves effective slowing down erosive force runoff. recommended trees 6 understory shrubs, it m. results most stable plant maximizes water conservation potential forest litter. By analyzing conductivity, we find complexity correlated greater coefficient variation Nevertheless, there no significant difference average conductivity per unit between patterns. Consequently, can rely natural recovery herbaceous plants. research contribute valuable scientific technical insights management areas, both China around world.

Language: Английский

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Seasonal dynamics of soil ecosystems in the riparian zones of the Three Gorges Reservoir, China

Global Ecology and Conservation, Journal Year: 2024, Volume and Issue: 54, P. e03174 - e03174

Published: Sept. 2, 2024

Riparian soils, together with vegetation, play a crucial role in supporting biodiversity and driving biogeochemical processes within river ecosystems. Conservation of riparian soils artificial planting are essential for ecosystem recovery following land degradation. Researchers focus on examining soil nutrients, microbial biomass, organic acid metabolism the interactions between plants along riverbanks. However, seasonal responses to plantations have been infrequently reported existing literature. This study investigates influence variations conditions growth artificially planted species zones Three Gorges Dam Reservoir (TGDR) China. The sampled include Cynodon dactylon, Hemarthria altissima, Salix matsudana. These provide valuable insight into properties zones, assessing across different seasons: T1 (spring), T2 (summer), T3 (autumn). results demonstrated significant changes matter, ammonium nitrogen, nitrate other indicators T3. Apart from invertase activity H. altissima soil, enzyme peaked during T1. Dominant bacteria were examined using high-throughput 16S rDNA sequencing, revealing that available belong 62 phyla 211 classes. Among most abundant Proteobacteria Actinobacteria, averaging over 60% all samples. Principal component analyses accounted 62.81% (T1), 50.57% (T2), 54.08% (T3) variation observed study, indicating predominantly influenced by phases, assuming factors remained constant. Pearson correlation analysis (p < 0.05) identified strong positive correlations physical three plant (r ≤ 0.94), as well negative bacterial communities -1.00). findings suggest selected well-suited cultivation zone TGDR. enhances our understanding dynamics environments, offering practical insights their management.

Language: Английский

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