Effects of nitrogen deposition with phosphorus addition on desert steppe plant communities

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 366, P. 108954 - 108954

Published: March 7, 2024

Language: Английский

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Runoff and Infiltration responses of revegetated slopes to clipping management on the northern Loess Plateau

International Soil and Water Conservation Research, Journal Year: 2023, Volume and Issue: 12(1), P. 171 - 183

Published: Feb. 23, 2023

Large-scale vegetation restoration can reduce local watershed water yield, limit establishment and subsequent growth, influence regional ecosystem functions. Clipping management by reducing aboveground parts of grassland was gradually recommended adopted in Grain-for-Green project to offset these additional issues. Thus, scientific evaluation the effectiveness clipping on infiltration runoff processes is necessary for maintaining stability surface system sustainability semi-arid regions. A field simulated rainfall experiment conducted with four managed grasslands (mainly bunge needlegrass Stipa grandis), including no clipping, light heavy complete under three slope gradients (10, 20, 30°) intensities (60, 90, 120 mm/h) explore mechanism responses using structural equation modeling variation partitioning based an SCS-CN model. The results showed coefficient plots were 1.33, 2.22, 4.22 times that plot. decreased coefficients 0%, 5%, 26% relative Rainfall intensity dominated amounts, intensity's total effect stronger than gradient. gradient more influential increasing intensity. mutual inhibition between runoff. In order maintain restoration, a 25–50% coverage after maximizes benefits enough soil supply prevents possible drought. We propose future policies should evaluate appropriate intensity; meanwhile, physiographic climate conditions be considered. These findings may offer guidance development measures regulation functions during northern Loess Plateau.

Language: Английский

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Impacts of land cover changes on dust emissions in northern China (2000–2020)

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(8), P. 2800 - 2812

Published: March 11, 2024

Abstract Land cover is a key factor affecting dust emissions. Substantial changes in land have occurred due to human activities and climate change northern China. However, the extent which these influence emissions still controversial. Here, we explored specific impact of use type transformation on between 2000 2020 by using Weather Research Forecasting model coupled with Chemistry (WRF‐Chem) from perspective changes. Two scenarios were set up compared quantify this impact. One scenario was data 2000, other 2020. Both driven initial meteorological conditions Results indicated that reduced China, but weakened intensity showed obvious spatial differences. Different conversion types had significant differences their Transforming bare areas water bodies can reduce −3.62 g m −2 year −1 . This followed sparse vegetation areas, decrease −2.9 , then cropland, reduction −2.57 These findings offer methodologies support for quantitative evaluation effects They also serve as reference environmental management when formulating policies.

Language: Английский

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Exploring the relationship between soil erosion and hydraulic parameters on slopes with clipped herbaceous vegetation through Bayesian network modeling

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(9), P. 3048 - 3061

Published: April 2, 2024

Abstract Clipping management, which alters vegetation conditions by removing aboveground while preserving the underground root system, directly impacts hydrological processes and flow dynamics, ultimately affecting soil erosion processes. This study conducted field experiments (2 × 6 m) encompassing four clipping intensities (with coverage of 70%, 50%, 25%, 0%), three rainfall (60, 90, 120 mm·h −1 ), slope gradients (10°, 20°, 30°). The results showed that treatments significantly reduced Darcy–Weisbach resistance coefficient ( f ). Elevated levels intensity, gradient led to increased velocity v Reynolds number Re stream power ω shear stress τ ) exhibited an upward trend with rising no significant difference in effect intensity. Variation partitioning analysis demonstrated influence steep slopes amplified effects intensity diminishing impact on values. Critically, Bayesian network model suggested that, comparison raindrop splashing, detachment transportation runoff were predominant driving mechanisms for clipped vegetation. Rainfall found raise depth enhance value, influenced erosion. Overall, these contribute improved comprehension hydraulic dynamics provide invaluable perspectives developing effective management strategies ensure sustainable land utilization judicious water resource governance.

Language: Английский

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Moderate grazing reduces while mowing increases greenhouse gas emissions from a steppe grassland: Key modulating function played by plant standing biomass

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 374, P. 124142 - 124142

Published: Jan. 16, 2025

Language: Английский

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Quantifying the rainfall-partitioning process of an urban isolated tree during different rainfall events for stormwater management

Urban Climate, Journal Year: 2025, Volume and Issue: 59, P. 102326 - 102326

Published: Feb. 1, 2025

Language: Английский

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Linking soil extracellular enzymes with soil respiration under altered litter inputs

Agricultural and Forest Meteorology, Journal Year: 2025, Volume and Issue: 367, P. 110503 - 110503

Published: March 18, 2025

Language: Английский

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Management of soil-related ecosystem services in semi-arid regions of Iran using key environmental drivers

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 381, P. 125181 - 125181

Published: April 7, 2025

Language: Английский

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The dynamic impact of land use change on ecosystem services as the fast GDP growth in Guiyang city

Ecological Indicators, Journal Year: 2023, Volume and Issue: 157, P. 111275 - 111275

Published: Nov. 17, 2023

The rapid growth of gross domestic product (GDP) in developing countries may lead to the overconsumption ecosystem services (ESs). This situation presents as imbalance ecological conservation and economic development, is case areas West China, such Guiyang city. study utilized PLUS model simulate future land use/land cover (LULC) scenarios InVEST assess ESs relation GDP research findings reveal following: 1) developed contributes degradation increased potential hazards. implementation policies be driver use change a factor influencing changes ESs. For example, between 2010 2020, area by 339%, but soil retention carbon storage decreased 2.04% 3.26%, respectively. 2) showed spatial heterogeneity. From 2020 2030, general hot spot distribution was consistent, which closely related change. 3) Trade-offs synergistic effects exist ESs, including trade-off synergy water yield. comes at expense emphasizes need prioritize degraded southern It urges stronger management redlines, stricter construction policies, balanced approach development protection.

Language: Английский

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Optimal clipping intensity for balancing soil erosion control and runoff production on revegetated slopes

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 620, P. 129470 - 129470

Published: April 3, 2023

Language: Английский

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