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Impacts of Land Use on Soil Erosion: RUSLE Analysis in a Sub-Basin of the Peruvian Amazon (2016–2022)

The Peruvian Amazon faces an increasing threat of soil erosion, driven by unsustainable agricultural practices and accelerated deforestation. In Neshuya (Ucayali region), agricultural activity has intensified since 2014, but the effect on soil erosion is unknown. The present study aimed to evaluate the increase in erosion levels, at a sub-basin of the central–eastern Amazon of Peru, in a Geographic Information System (GIS) environment. The revised universal soil loss equation (RUSLE) model was used for assessing the effect of vegetation cover change from 2016 to 2022. In the Neshuya sub-basin (973.4 km2), the average erosion increased from 3.87 to 4.55 t ha?1 year?1, on average. In addition, there is great spatial variability in the values. In addition, 7.65% of the study area (74.52 km2) exceeds the soil loss tolerance limit (15 t ha?1 year?1). The deforestation rate was 17.99 km2 year?1 and by 2022 the forested area reached 237.65 km2. In conclusion, the transition from forest to farmland was related to the most critical erosion values. Unsustainable soil management practices can be the underlying explanation of changes in soil chemical and physical properties. Also, social dynamic changes and differences in landscape patterns play a role.

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Detail Information
Series Title
Geosciences
Call Number
550
Publisher
Switzerland : MPDI.,
Collation
31 hlm PDF, 8.832 KB
Language
Inggris
ISBN/ISSN
2076-3263
Classification
550
Content Type
text
Media Type
-
Carrier Type
online resource
Edition
Vol.15, Issue 1, January 2025
Subject(s)
Remote sensing
degraded tropical soils
Amazonian biome
PISCO SENAMHI
MapBiomass Peru
Specific Detail Info
Geosciences
Statement of Responsibility
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No other version available

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  • Impacts of Land Use on Soil Erosion: RUSLE Analysis in a Sub-Basin of the Peruvian Amazon (2016–2022)
    The Peruvian Amazon faces an increasing threat of soil erosion, driven by unsustainable agricultural practices and accelerated deforestation. In Neshuya (Ucayali region), agricultural activity has intensified since 2014, but the effect on soil erosion is unknown. The present study aimed to evaluate the increase in erosion levels, at a sub-basin of the central–eastern Amazon of Peru, in a Geographic Information System (GIS) environment. The revised universal soil loss equation (RUSLE) model was used for assessing the effect of vegetation cover change from 2016 to 2022. In the Neshuya sub-basin (973.4 km2), the average erosion increased from 3.87 to 4.55 t ha−1 year−1, on average. In addition, there is great spatial variability in the values. In addition, 7.65% of the study area (74.52 km2) exceeds the soil loss tolerance limit (15 t ha−1 year−1). The deforestation rate was 17.99 km2 year−1 and by 2022 the forested area reached 237.65 km2. In conclusion, the transition from forest to farmland was related to the most critical erosion values. Unsustainable soil management practices can be the underlying explanation of changes in soil chemical and physical properties. Also, social dynamic changes and differences in landscape patterns play a role.
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