Aboveground vegetation communities affect dung seedling richness and density based on the diet selection of large herbivores

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 383, P. 109536 - 109536

Published: Feb. 6, 2025

Language: Английский

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Pattern of Diversity and Prediction of Suitable Areas of Grasshoppers from the Qinghai–Tibet Plateau in China (Orthoptera: Acridoidea)

Insects, Journal Year: 2025, Volume and Issue: 16(2), P. 191 - 191

Published: Feb. 10, 2025

The Qinghai-Tibet Plateau is recognized as a biodiversity hotspot, with wide variety of grasshopper species, including several endemic to the region, which play significant roles in both agricultural and forestry ecosystems. purpose this study was analyze species diversity distribution pattern grasshoppers on Plateau. A comprehensive database comprising 390 established through specimen collection, literature review, geographical data analysis. Diversity analysis showed that under five vegetation types relatively average. However, alpine cold subtropical evergreen broad-leaved forest still high Shannon index Simpson index. Grasshopper are mainly concentrated eastern southern parts richness particularly certain mountain areas, Bayankala Mountain Hengduan being hotspots. MaxEnt models were used assess potential habitats for four dominant genera projected climate change scenarios 2050 2070. Altitude factor affecting Locusta, Chorthippus, Kingdonella, while precipitation temperature factors Leuconemacris. These findings improve our understanding patterns different across various habitat provide valuable insights developing targeted ecological protection strategies response environmental changes.

Language: Английский

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Climate Change Drives Shifts in Suitable Habitats of Three Stipa purpurea Alpine Steppes on the Western Tibetan Plateau

Diversity, Journal Year: 2025, Volume and Issue: 17(3), P. 145 - 145

Published: Feb. 21, 2025

The alpine steppe has an important place in ecosystems, and its distribution pattern is strongly influenced by climate change. In this study, we used “biomod2” “FragStats 4.2” to calculate the migration trends habitat fragmentation of three S. purpurea steppes on western Tibetan Plateau. results study show that Stipa purpurea-Ceratoides compacta steppe, purpurea-Carex moorcroftii montis-everestii are climate, while other variables have less impact. Their main influence factors annual precipitation (Bio12), warmest quarter (Bio18), coldest (Bio19), respectively. effects carbon emissions suitable habitats all significant future scenarios. Continued increases will lead a continuous reduction their areas. These communities bounded 33° N. South boundary, mountain ranges tendency migrate higher elevations southward direction. North northward Climate change reduces community aggregation, leading gradual fragmentation. findings provide scientific basis for conservation Plateau, thereby contributing improvement ecosystem stability species diversity.

Language: Английский

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Trade‐off between spring phenological sensitivities to temperature and precipitation across species and space in alpine grasslands over the Qinghai–Tibetan Plateau

New Phytologist, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Elucidating climatic drivers of spring phenology in alpine grasslands is critical. However, current statistical estimates phenological sensitivities to temperature and precipitation (βT βP) might be biased their variability across sites species are not fully explained. We benchmarked species-level βT βP statistically inferred from historical records with observations a field manipulative experiment. then analyzed landscape scale estimated the best approach benchmark analysis 57 grassland Qinghai-Tibetan Plateau. Compared experiment results, process-agnostic regression-based approaches underestimate by 2.36-3.87 d °C-1 (54-88%) while process-based model fitting predicts comparable βP. Process-based negatively correlated (R = -0.94, P < 0.01) -0.45, 0.01). positively mean annual temperature, elevation at regional scale. Using can better estimate climate. The trade-off between contributes site-level variabilities grasslands, which needs incorporated predicting future changes.

Language: Английский

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Complex interactions of "water-light-heat" climatic conditions on spring phenology in the mid-high latitudes of the Northern Hemisphere

Agricultural and Forest Meteorology, Journal Year: 2025, Volume and Issue: 367, P. 110520 - 110520

Published: March 31, 2025

Language: Английский

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Landscape Spatiotemporal Heterogeneity Decreased the Resistance of Alpine Grassland to Soil Droughts

Remote Sensing, Journal Year: 2025, Volume and Issue: 17(7), P. 1293 - 1293

Published: April 4, 2025

Alpine grasslands face increasing threats from soil droughts due to climate change. While extensive research has focused on the direct impacts of drought vegetation, role landscape fragmentation and spatiotemporal heterogeneity in shaping response these ecosystems remains inadequately explored. This study aims fill this gap by examining Gannan alpine grassland northeastern Qinghai-Tibet Plateau. Using remote sensing data, indicators spatial temporal were derived, including variance (SCV), autocorrelation (SAC), (TAC). Two thresholds (Tr: threshold rapid resistance loss Tc: complete loss) representing percentile-based intensities identified assess NDVI decline under conditions. Our findings indicate that low droughts, with mean Tr Tc 8.93th 7.36th percentile, respectively. Both decreasing reduced vegetation resistance, SCV having a more pronounced effect. Specifically, increased 1.4 times faster 2.6 time slower than SCV, These results underscore critical modulating responses drought, suggesting managing patches could enhance ecosystem resilience.

Language: Английский

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Effects of air temperature, photoperiod, and soil moisture on leaf senescence and dormancy depth in four subtropical tree species

Forestry Research, Journal Year: 2025, Volume and Issue: 5(1), P. 0 - 0

Published: Jan. 1, 2025

Language: Английский

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Effects of simulated warming and litter removal on structure and function of semi-humid alpine grassland in the Qinghai-Tibet Plateau

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

Published: May 15, 2025

Climate warming and human activities are modifying plant litter inputs in alpine grasslands, which is predicted to affect ecosystem structure function. However, the effects of removal as well combined impacts on ecological functions grasslands not understood. A field experiment was conducted investigate experimental warming, removal, their interaction multifunctionality (EMF) grasslands. Our results demonstrated a significant decrease diversity ( p &lt; 0.05) vegetation cover 0.01) under treatment, whereas richness index R ) belowground biomass (BGB) significantly increased treatment 0.05). The effect neutralizing Meanwhile, EMF tended increase all treatments warming-litter removal. there differences response aboveground (AEMF) showed decreasing trend, while (BEMF) treatment. In contrast, AEMF BEMF an increasing trend addition, study found that could alleviate negative multiple functions. These research findings can serve reference for maintaining climate change conditions provide effective measures enhance capacity grassland ecosystems respond change. application appropriate management other nature-based solutions (NbS) improve functions, aiming adopt sustainable approaches address environmental challenges, holds importance conservation.

Language: Английский

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Advanced vegetation green-up onset in regions with cooling air temperatures in the Northern Hemisphere: Drivers and impacts on productivity

Global and Planetary Change, Journal Year: 2025, Volume and Issue: unknown, P. 104891 - 104891

Published: May 1, 2025

Language: Английский

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Dynamic pattern-effect relationships between precipitation and vegetation in the semi-arid and semi-humid area of China

CATENA, Journal Year: 2023, Volume and Issue: 232, P. 107425 - 107425

Published: July 28, 2023

Language: Английский

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