Land use and climate change-induced soil erosion mapping in a sub-tropical environment

IF 4.5 3区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

Geomatics Natural Hazards & Risk Pub Date : 2023-10-27 DOI:10.1080/19475705.2023.2270129

Subodh Chandra Pal, Rabin Chakrabortty, Abu Reza Md. Towfiqul Islam, Paramita Roy, Indrajit Chowdhuri, Asish Saha, Aznarul Islam, Romulus Costache, Edris Alam

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Abstract

One of the most important aspects of the ‘sub-tropical’ monsoon-influenced environment is the issue of ‘soil erosion’ and its related ‘land degradation’. On the other hand, the climate in this area has become quite extreme. According to this viewpoint, it is important to research a future ‘soil erosion’ scenario in front of the probable effects of climate change and land use change. For the objective of assessing the extent of soil erosion in this area, this study took into account both the USLE and the RUSLE. Compared to the USLE that has been validated, RUSLE has a comparatively greater quantitative efficiency. In RUSLE, the ‘very high’ (>20) and ‘high’ (15–20) ‘soil erosion’ zones tend to be associated with the ‘north-western, western, south-western, and southern’ regions of the river basin. The ‘soil erosion’ that will occur in the future has been estimated by taking into account the projected rainfall, land use and land cover (LULC). ‘Soil erosion’ has increased from the previous time to the projected time. Predicted R factor values for SSP 585 range from 399.92 to 493.72. In addition, a growing erosion tendency associated with increased shared socio-economic pathways (SSPs) has been found.

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亚热带环境土地利用与气候变化土壤侵蚀制图

受季风影响的“亚热带”环境的最重要方面之一是“土壤侵蚀”及其相关的“土地退化”问题。另一方面，这个地区的气候变得相当极端。根据这一观点，在气候变化和土地利用变化的可能影响面前，研究未来的“土壤侵蚀”情景是很重要的。为了评估该地区的土壤侵蚀程度，本研究同时考虑了USLE和RUSLE。与已验证的USLE相比，RUSLE具有相对较高的定量效率。在RUSLE中，“非常高”(>20)和“高”(15-20)的“土壤侵蚀”带往往与流域的“西北、西部、西南和南部”地区有关。未来将发生的“土壤侵蚀”是通过考虑预计的降雨量、土地利用和土地覆盖(LULC)来估计的。“土壤侵蚀”从之前的时间到预计的时间有所增加。ssp585的预测R因子值为399.92 ~ 493.72。此外，还发现与共享社会经济途径(ssp)增加相关的侵蚀趋势日益增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geomatics Natural Hazards & Risk GEOSCIENCES, MULTIDISCIPLINARY-METEOROLOGY & ATMOSPHERIC SCIENCES

CiteScore

7.70

自引率

4.80%

发文量

117

审稿时长

>12 weeks

期刊介绍： The aim of Geomatics, Natural Hazards and Risk is to address new concepts, approaches and case studies using geospatial and remote sensing techniques to study monitoring, mapping, risk mitigation, risk vulnerability and early warning of natural hazards. Geomatics, Natural Hazards and Risk covers the following topics: - Remote sensing techniques - Natural hazards associated with land, ocean, atmosphere, land-ocean-atmosphere coupling and climate change - Emerging problems related to multi-hazard risk assessment, multi-vulnerability risk assessment, risk quantification and the economic aspects of hazards. - Results of findings on major natural hazards