Soil Erosion in the United States. Present and Future (2020-2050)

• URL: http://arxiv.org/abs/2207.06579v1
• Date: Thu, 14 Jul 2022 00:46:37 GMT
• Title: Soil Erosion in the United States. Present and Future (2020-2050)
• Authors: Shahab Aldin Shojaeezadeh, Malik Al-Wardy, Mohammad Reza Nikoo, Mehrdad Ghorbani Mooselu, Mohammad Reza Alizadeh, Jan Franklin Adamowski, Hamid Moradkhani, Nasrin Alamdari, Amir H. Gandomi
• Abstract summary: We estimate/predict soil erosion rates by water erosion using three alternative scenarios across the contiguous United States. The baseline model ( 2020) estimates soil erosion rates of 2.32 Mg ha 1 yr 1 with current agricultural conservation practices. The soil erosion forecast for 2050 suggests that all the climate and LULC scenarios indicate either an increase in extreme events or a change in the spatial location of extremes.
• Score: 8.729045594301041
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Soil erosion is a significant threat to the environment and long-term land management around the world. Accelerated soil erosion by human activities inflicts extreme changes in terrestrial and aquatic ecosystems, which is not fully surveyed/predicted for the present and probable future at field-scales (30-m). Here, we estimate/predict soil erosion rates by water erosion, (sheet and rill erosion), using three alternative (2.6, 4.5, and 8.5) Shared Socioeconomic Pathway and Representative Concentration Pathway (SSP-RCP) scenarios across the contiguous United States. Field Scale Soil Erosion Model (FSSLM) estimations rely on a high resolution (30-m) G2 erosion model integrated by satellite- and imagery-based estimations of land use and land cover (LULC), gauge observations of long-term precipitation, and scenarios of the Coupled Model Intercomparison Project Phase 6 (CMIP6). The baseline model (2020) estimates soil erosion rates of 2.32 Mg ha 1 yr 1 with current agricultural conservation practices (CPs). Future scenarios with current CPs indicate an increase between 8% to 21% under different combinations of SSP-RCP scenarios of climate and LULC changes. The soil erosion forecast for 2050 suggests that all the climate and LULC scenarios indicate either an increase in extreme events or a change in the spatial location of extremes largely from the southern to the eastern and northeastern regions of the United States.

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