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Drivers of soil salinity and their correlation with climate change
Current Opinion in Environmental Sustainability ( IF 6.6 ) Pub Date : 2021-01-12 , DOI: 10.1016/j.cosust.2020.10.015
Deepthi Eswar , Rajan Karuppusamy , Selvi Chellamuthu

Climate change has affected diverse spheres and its impact is being witnessed worldwide. Soil, the basis of human sustenance, is both directly and indirectly affected by climate change. Soil erosion, vegetation degradation and soil salinisation are becoming prevalent, causing a threat to future food security. Saline soils are found mainly in North and Central Asia, Africa and South America. Various factors such as excess irrigation and poor drainage, groundwater salinity, sea level rise and intrusion, irregular rainfall contribute to the process of soil salinisation. The key findings of this paper are as follows: Salt-affected soils cover an area of around 1060.1 Mha in the world and their area is gradually increasing due to the influence of climate change; soil salinity tends to increase with increase in sea level intrusion and temperature, decrease in precipitation and improper irrigation management. Though, soil salinisation has been extensively researched and recorded in coastal areas, inland areas are yet to be assessed and monitored and there is enormous scope for research on the correlation between climate change and soil salinity drivers at global and regional scale. This review aims to provide an insight into the widespread soil salinity phenomenon and highlight the need to tackle the issue urgently keeping food security and economic status of agricultural ecosystem dependent population in consideration.



中文翻译:

土壤盐分的驱动力及其与气候变化的关系

气候变化已影响到各个领域,其影响正在全球范围内目睹。土壤是人类赖以生存的基础,气候变化直接或间接地影响着土壤。土壤侵蚀,植被退化和土壤盐碱化正变得普遍,对未来的粮食安全构成威胁。盐渍土主要分布在北亚和中亚,非洲和南美。灌溉过度和排水不畅,地下水盐分,海平面上升和侵入,不规则降雨等各种因素都对土壤盐碱化过程产生了影响。本文的主要发现如下:盐渍土壤覆盖全球约1060.1 Mha的面积,并且由于气候变化的影响,其面积正逐渐增加。随着海平面上升和温度升高,土壤盐度趋于增加,降水减少,灌溉管理不当。尽管在沿海地区已经对土壤盐渍化进行了广泛的研究和记录,但内陆地区尚待评估和监测,在全球和区域范围内,气候变化与土壤盐渍化驱动因素之间的相关性研究范围很大。这次审查旨在深入了解普遍的土壤盐分现象,并强调必须紧急解决这一问题,同时要考虑到依赖农业生态系统的人口的粮食安全和经济状况。内陆地区尚待评估和监测,在全球和区域范围内,气候变化与土壤盐分驱动因素之间的相关性研究范围很大。这次审查旨在深入了解普遍的土壤盐分现象,并强调必须紧急解决这一问题,同时要考虑到依赖农业生态系统的人口的粮食安全和经济状况。内陆地区尚待评估和监测,在全球和区域范围内,气候变化与土壤盐分驱动因素之间的相关性研究范围很大。这次审查旨在深入了解普遍的土壤盐分现象,并强调必须紧急解决这一问题,同时要考虑到依赖农业生态系统的人口的粮食安全和经济状况。

更新日期:2021-01-12
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