Roles of the soil microbiome in sustaining grassland ecosystem health on the Qinghai-Tibet Plateau

Microbiological Research, Год журнала: 2025, Номер unknown, С. 128078 - 128078

Опубликована: Янв. 1, 2025

Язык: Английский

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Impacts of Climate Change and Human Activities on NDVI in the Qinghai-Tibet Plateau

Remote Sensing, Год журнала: 2023, Номер 15(3), С. 587 - 587

Опубликована: Янв. 18, 2023

Vegetation changes and factors have a profound influence on the local ecology, economy, long-term durability of human construction. This study focuses impacts climate change activity vegetation Qinghai-Tibet Plateau aims to develop dataset levels plateau. Sen Mann-Kendall trend analysis was used evaluate spatial distribution NDVI its trends, as well lagged response plant growth climatic circumstances. Using geodetector model, effects meteorological anthropogenic intensity data were examined. The study’s findings show that, although influences ecosystem vulnerability caused decline in region’s vegetation, stable healthy supported vegetation. From 2000 2017, area where grass improved significantly accounted for highest proportion, reaching 34.22%. Different intensities are distributed spatially, this interplay affects greenness more than each element acting alone. how affect can offer practical recommendations maintaining Plateau’s natural ecology. It is crucial responsibly safeguard environment nation’s ecological civilization.

Язык: Английский

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Nutrient and sediment retention by riparian vegetated buffer strips: Impacts of buffer length, vegetation type, and season

Agriculture Ecosystems & Environment, Год журнала: 2024, Номер 369, С. 109050 - 109050

Опубликована: Апрель 29, 2024

Язык: Английский

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Effects of alpine grassland degradation on soil microbial community structure and metabolic activity in the Qinghai-Tibet Plateau

Applied Soil Ecology, Год журнала: 2024, Номер 200, С. 105458 - 105458

Опубликована: Май 31, 2024

Язык: Английский

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Different Responses of Soil Nutrient Dynamics and Microbial Activities to Soil Moisture Changes in Alpine Wetlands and Meadows on the Tibetan Plateau

Land Degradation and Development, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

ABSTRACT Alpine wetlands on the Tibetan Plateau are important carbon pools and undergoing severe degradation, generally with decreasing vegetation soil water contents. However, ecological responses of alpine to hydrological changes vary greatly among habitats. In this study, topsoil from meadows (degraded wetlands) was incubated under 50%, 70%, 100% saturated content (SWC) then characterized based nutrients, enzyme activities, molecular composition dissolved organic matter (metabolomes), microbial communities (metagenomes). Compared meadow soils, wetland soils had greater nutrient contents hydrolase activities more complex compositions metabolomes metabolomes. After incubation, presented highest all enzymes 70% SWC, whereas β‐glucosidase acid phosphatase 50% both together lowest phosphorus content. Drought increased number species in but decreased that soils. The Shannon Pielou indices were SWC (in or meadows) soils) significantly positively correlated activity Distance‐based redundancy analysis revealed role peroxidase wetlands. Procrustes further indicated different drought‐induced two This study deepens our understanding soil‐type‐related ecosystems provides a valuable reference for application emerging multiomics techniques.

Язык: Английский

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Freeze-thaw desertification of alpine meadow in Qilian Mountains and the implications for alpine ecosystem management

CATENA, Год журнала: 2023, Номер 232, С. 107471 - 107471

Опубликована: Авг. 25, 2023

Язык: Английский

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Temperature thresholds drive the biogeographic pattern of root endophytic fungal diversity in the Qinghai-Tibet Plateau

The Science of The Total Environment, Год журнала: 2023, Номер 889, С. 164270 - 164270

Опубликована: Май 19, 2023

Studying the diversity and distribution of host-associated fungi along temperature gradient can help us detect potential impact global warming on host-microbe interactions. By investigating 55 samples gradient, our results demonstrated that thresholds controlled biogeographic pattern fungal in root endosphere. When mean annual crossed ∼1.40 °C, or coldest quarter was over ∼-8.26 endophytic OTU richness abruptly decreased. Shared between endosphere rhizosphere soil showed similar thresholds. However, had a nonsignificant positive linear relationship with temperature. The asynchrony alpha response to increasing indicated might regulate microbial colonization process from rhizoplane interior tissue. crosses threshold, rapid decrease entry tissue may lead richness. We further found more sensitive increases under drought than non-drought conditions. also influencing beta diversity. difference two sampling points an ∼2.2 °C species replacement sharply decreased, increased. This investigation highlights are very important shaping variation fungi, especially alpine ecosystems. Furthermore, it provides preliminary framework for studying interactions warming.

Язык: Английский

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Climatic factors regulate the assembly processes of abundant and rare microbial communities in desert soil

Journal of Plant Ecology, Год журнала: 2023, Номер 16(6)

Опубликована: Сен. 28, 2023

Abstract Soil microorganisms, which include many rare taxa and a small number of abundant taxa, have different contributions to the ecosystem functions services. High throughput sequencing technology was used analyze species composition soil samples by DNA sequencing. microorganisms were divided into reveal their composition. Correlation analysis random forest method further influence environmental factors on community. Finally, beta nearest taxon index (βNTI) based null model elucidate mechanisms underlying microbial community assembly. We found that, in desert soil, assembly bacteria almost entirely dominated homogeneous selection deterministic processes. For comparison, stochastic processes had more pronounced effects bacteria. However, both fungi exhibited similar patterns assembly, i.e. jointly determined fungal communities. also observed that shifted from with increasing mean annual precipitation (MAP) temperature (MAT) for Conversely, fungi, there an inclination toward shift rising MAT. In conclusion, our findings provide compelling evidence MAT MAP regulate process communities soil. These establish theoretical foundation future investigations structure ecological microorganisms.

Язык: Английский

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Plant community stability, indicator species and their driving factors at a gradient of grazing intensity in an alpine meadow

Ecological Indicators, Год журнала: 2024, Номер 162, С. 112012 - 112012

Опубликована: Апрель 12, 2024

On the Tibetan Plateau, most alpine meadows have undergone various degree of degradation due to heavy grazing practices. Assessing progress succession, identify indicator species for different managements is crucial facilitate effective restoration degraded meadows. In this study, specific areas with varying levels intensity were selected assess stability plant communities, each stage, and examine driving factors influencing community stability. The results showed that (i) was found be highest under light moderate grazing. comparison treatment, "cohesion" index (|Negative cohesion|) increased by 54.45% treatment 23.24% treatment. (ii) varied across succession stages played distinct roles. Dominant identified as no whereas rare poisonous served indicators (iii) mechanisms differed throughout gradient intensity. Plant-related primarily influenced grazing, while soil-related began play a joint role This empirical knowledge contributes establishing scientific basis rational utilization management meadow ecosystems.

Язык: Английский

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Elevational distribution patterns and drivers factors of fungal community diversity at different soil depths in the Abies georgei var. smithii forests on Sygera Mountains, southeastern Tibet, China

Frontiers in Microbiology, Год журнала: 2024, Номер 15

Опубликована: Авг. 9, 2024

Soil fungal communities play a crucial role in maintaining the ecological functions of alpine forest soil ecosystems. However, it is currently unclear how distribution patterns different layers forests will change along elevational gradients.

Язык: Английский

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