Plant Community and Soil Properties Regulate Space-Scale Dependence of Species Diversity under Grazing Exclusion and Rest Grazing in the Qilian Mountains of China DOI Creative Commons

Lixiang Liu,

Yongwei Han,

Weiwei Liu

et al.

Agriculture, Journal Year: 2023, Volume and Issue: 13(10), P. 1966 - 1966

Published: Oct. 9, 2023

Grazing exclusion (GE) and rest grazing (RG) are important management systems for the restoration of degraded grassland ecosystems. In order to evaluate effects mechanisms different on scale dependency species diversity, plant community indices soil variables were determined in 32 plots Qilian Mountains Gansu Province. The results show that diversity their regulating had space-scale dependence under systems. richness RG significantly higher than those GE at regional scale. Species was 128 98, respectively, Shannon–Wiener Simpson 2.26 2.16, 0.85 0.83, respectively. Additionally, three a significant effect mountain meadows, but meadows temperate steppes. Meanwhile, only influenced Most each positive diversity. However, negative correlation seen between biodiversity coverage, mean height, porosity (SP) bulk density (BD) two contrasting conclusion, choosing selecting according types local can help restore vegetation.

Language: Английский

Effects of alpine grassland degradation on soil microbial community structure and metabolic activity in the Qinghai-Tibet Plateau DOI
Haoran Sun, Jiayi Liu,

Jinghui Wu

et al.

Applied Soil Ecology, Journal Year: 2024, Volume and Issue: 200, P. 105458 - 105458

Published: May 31, 2024

Language: Английский

Citations

10
Advancing a climate smart strategy for biodiversity conservation in protected areas on the Qinghai-Xizang Plateau DOI Creative Commons
Li Xuan, Yanzheng Yang, Pengxiang Zhao

et al.

Geography and sustainability, Journal Year: 2025, Volume and Issue: unknown, P. 100264 - 100264

Published: Jan. 1, 2025

Language: Английский

Citations

1
Impacts of alpine shrub-meadow degradation on its ecosystem services and spatial patterns in Qinghai-Tibetan Plateau DOI Creative Commons
Dawen Qian, Yangong Du, Qian Li

et al.

Ecological Indicators, Journal Year: 2022, Volume and Issue: 135, P. 108541 - 108541

Published: Jan. 10, 2022

Alpine shrub-meadow is an important ecosystem type on the Qinghai-Tibetan Plateau, providing a variety of services while supporting livelihoods pastoralists. However, there clear lack understanding changes in spatial patterns and alpine degradation. This study combined aerial photography ground surveys to investigate analyse impact degradation their services, relationships between services. The results showed that led fragmentation patchiness shrub-meadow, as evidenced by decrease proportion shrub meadow area average patch size, well complexity boundaries shapes. Light moderate reduced all with carbon storage, nutrient supply water retention decreased 27.4%, 17.3% 13.8% respectively, forage 65.2% at heavy degradation, reduction was even greater. Regulating increased again due accumulation slow decomposition plant underground roots, rodent activity. layer were more closely related its than layer, positively Our findings suggest may be non-linear need interpreted caution should analysed comprehensively wider range influencing factors. have implications for grassland restoration service management Plateau.

Language: Английский

Citations

32
Applications of unoccupied aerial systems (UAS) in landscape ecology: a review of recent research, challenges and emerging opportunities DOI Creative Commons
Miguel L. Villarreal, Tara B. B. Bishop, Temuulen Tsagaan Sankey

et al.

Landscape Ecology, Journal Year: 2025, Volume and Issue: 40(2)

Published: Feb. 8, 2025

Language: Английский

Citations

0
A non-destructive method for three-dimensional characterizing plateau pika's burrow system DOI
Jing Li, Baolong Zhu, Long Ren

et al.

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 380, P. 124789 - 124789

Published: March 12, 2025

Language: Английский

Citations

0
Enhancements of soil priming effect and carbon sequestration in degraded alpine meadows via supplementation: a comparative study of Tibetan sheep (Ovis aries) and plateau pika (Ochotona curzoniae) excrements DOI Creative Commons
Qinyao Li,

Wenquan Yang,

Yanru Wu

et al.

Ecological Processes, Journal Year: 2025, Volume and Issue: 14(1)

Published: Jan. 2, 2025

Abstract Background Grassland degradation decreases the capacity of soil carbon sequestration, while supplementation exogenous organic matter enhances priming effect (PE) and affects cycle in soil. The excrements Tibetan sheep ( Ovis aries ) plateau pika Ochotona curzoniae play an important role cycling. Therefore, they were used to enrich alpine meadow soils degraded different levels after incubation at 20 °C for up 45 days. PE was analyzed using natural 13 C isotope tracer method relation properties. Results two kinds excrement significantly increased accumulation sequestration. Of two, achieved a better effect. Compared with non-degraded soil, severely had PE, but lightly moderately not from each other. Structural equation modelling shows that total nitrogen (TN), (SOC), β-1,4-N-acetylaminoglucosidase (NAG), β-1,4-glucosidase (βG), pH, microbial biomass (MBC) are main factors affecting PE. In particular, TN directly negatively affected SOC NO 3 − -N:NH 4 + -N ratio indirectly by enzyme activity MBC. Conclusions This study demonstrates supplement animal can improve extracellular content soils, which is conducive net balance. Supplementation both effectively enhance further increase activity, fertility sequestration ability seriously higher than those excrement, promote meadows. findings this provide theoretical evidence rational utilization degradation.

Language: Английский

Citations

0
Landscape Spatiotemporal Heterogeneity Decreased the Resistance of Alpine Grassland to Soil Droughts DOI Creative Commons
Yuxin Wang, Hu Liu,

Wenzhi Zhao

et al.

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

Citations

0
Characterization of the spatial distribution of plateau pika burrows along an alpine grassland degradation gradient on the Qinghai–Tibet Plateau DOI
Dawen Qian, Qian Li, Bo Fan

et al.

Ecology and Evolution, Journal Year: 2021, Volume and Issue: 11(21), P. 14905 - 14915

Published: Oct. 7, 2021

Abstract Plateau pika burrows are common feature of degraded grassland in the Qinghai–Tibet (QTP) and serve as an important indicator activity degradation. However, current understanding spatial pattern changes their critical thresholds across a degradation gradient alpine is deficient. In this study, we investigated quantified plateau under typical shrub meadows northeastern QTP using unmanned aerial vehicle landscape metrics. The meadow leads to change from two‐layered structure mosaic bare soil, with scattered throughout. Moderate tipping point for surface patterns, followed by disappearance shrub, retreat encroachment increasing density size burrows. area characteristics have influenced burrow, maintaining its proportional vital measure control threat pastures. results paper provide methodological reference guidance sustainable utilization on QTP.

Language: Английский

Citations

20
Alpine grassland degradation intensifies the burrowing behavior of small mammals: evidence for a negative feedback loop DOI Creative Commons
Zaiwei Wang,

Jiawen YAN,

Amy Brunton-Martin

et al.

Integrative Zoology, Journal Year: 2023, Volume and Issue: 19(2), P. 240 - 252

Published: May 27, 2023

Abstract Globally, grassland degradation is an acute ecological problem. In alpine on the Tibetan Plateau, increased densities of various small mammals in degraded are assumed to intensify process and these subject lethal control. However, whether negative impact solely a result population size or also activity behavior has not been tested. this study, we use plateau pika as model compare size, core area colony, number burrow entrances latrines between lightly severely grassland. We test alleged contribution burrowing activities individuals response lower food abundance. found that resulted plant species richness, height, biomass. Furthermore, overall was significantly affected by location areas were larger had higher burrows latrines. Our study provides convincing evidence habitat‐induced changes small, mammals, such pika, can exacerbate degradation. This finding significant implications for managing restoring ecosystems.

Language: Английский

Citations

7
Bare Patches Created by Plateau Pikas Contribute to Warming Permafrost on the Tibet Plateau DOI Creative Commons
Yuhong Chen, Zhuotong Nan, Shuping Zhao

et al.

Geophysical Research Letters, Journal Year: 2024, Volume and Issue: 51(11)

Published: May 29, 2024

Abstract Plateau pikas, small mammals native to the Qinghai‐Tibet (QTP), create bare patches through burrowing. No previous assessment exists on their impact permafrost. This study fills this gap by simulating hypothetical scenarios in Three Rivers Headwaters Region of QTP using Noah‐MP model for plant growing seasons during 2015–2018. Our findings reveal a significant increase soil temperature active layer due pika‐induced patches, particularly July–August. The average rise at 2.5 cm depth was 0.36°C permafrost regions and 0.29°C seasonally frozen ground August. Minimal unfrozen water content observed, with slight deep layers regions, negligible areas. These underscore previously unexplored influence pika burrowing temperature, suggesting potential risk accelerating degradation, especially permafrost‐dominated regions.

Language: Английский

Citations

2