Assessment of soil quality along the elevation gradient of the Seti River watershed in Pokhara Metropolitan City, Nepal
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View abstract on PubMed
Summary
This summary is machine-generated.Agricultural land quality in Nepal
Area Of Science
- Agricultural Science
- Soil Science
- Environmental Science
Background
- Soil quality is crucial for global agricultural productivity.
- Understanding land quality variations across elevation and depth is vital for sustainable farming.
- The Seti River watershed in Pokhara Metropolitan City (PMC), Nepal, presents a unique study area.
Purpose Of The Study
- To evaluate the impact of elevation gradients and soil depths on agricultural land quality in the Seti River watershed, PMC, Nepal.
- To assess soil quality index (SQI) and key soil properties (pH, SOM, SOC, N, P, K) across different elevations and depths.
- To provide recommendations for site-specific soil management strategies to enhance agricultural productivity and resilience.
Main Methods
- Stratified random sampling collected 60 soil samples.
- Samples were analyzed across three elevation gradients (500-700 m, 700.1-900 m, 900.1-1100 m).
- Soil samples were collected at two depths (0-15 cm and 15-30 cm) and analyzed for various parameters, including SQI, pH, SOM, SOC, N, P, and K. Kruskal-Wallis test was used for statistical analysis.
Main Results
- Overall good soil quality (SQI: 0.88-0.82) was observed across all elevations.
- Soil organic matter (SOM) and soil organic carbon (SOC) significantly decreased with increasing elevation.
- Topsoil (0-15 cm) showed higher nutrient concentrations (N, P, K) and near-neutral pH compared to subsoil (15-30 cm), which was weakly acidic.
Conclusions
- PMC soils are generally favorable for agriculture, but site-specific management is necessary.
- Regulate fertilizer application, especially nitrogen (N) and phosphorus (P), in lower elevations to prevent imbalances.
- Enhance SOM in higher elevations using compost or green manure to improve soil fertility and agricultural resilience.
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