Soil Degradation: Causes, Consequences, and Management Strategies
Akash Amulpandi
*
Department of Agriculture, Kalasalingam School of Agriculture and Horticulture, Kalasalingam Academy of Research and Education, Srivilliputhur, Virudhunagar, India.
M. S. Megha
Department of Genetics and Plant Breeding, TNAU, Cbe, India.
P. Jayyanth Kaarthik
VIT School of Agricultural Innovations and Advanced Learning, Vellore Institute of Technology, Vellore, Tamil Nadu, India.
P. E. S. Thejan
Department of Soil Science and Agricultural Chemistry, Faculty of Agriculture, Annamalai University, Chidambaram, India.
M. Anitha
Adhiyamaan College of Agriculture and Research, Athimugam, Shoolagiri, Krishnagiri, India
G. Muhilan
Department of Soil Science and Agricultural Chemistry, AC&RI, TNAU, Coimbatore, Tamil Nadu, India.
S. Kavimugilan
Department of Entomology, Rani Lakshmi Bai Central Agrivcultural Univertsity, Jhansi, India.
Georgi Kostov
Department of Agrochemistry and Soil Science, Agricultural University, Plodiv, India.
Aleena Raj
Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi, India.
K. Ujjain Kumar
Department of Soil Science and Agriculture Chemistry, TNAU, Cbe, India.
*Author to whom correspondence should be addressed.
Abstract
Soil degradation is an environmental and agricultural concern that reduces the capacity of land to support crop production, ecosystem functions and sustainable livelihoods. This review summarises the principal causes, consequences, challenges and management strategies associated with soil degradation. It identifies natural and human-induced drivers, including wind and water erosion, drought, floods, deforestation, overgrazing, urbanisation, industrial pollution, intensive cultivation, excessive use of chemical fertilisers and pesticides, poor irrigation management and continuous cropping. These processes contribute to the physical, chemical and biological deterioration of soil through topsoil loss, compaction, salinisation, acidification, depletion of organic matter and decline of beneficial soil organisms. The main consequences include reduced soil fertility and crop productivity, biodiversity loss, disrupted nutrient cycling, increased vulnerability to climate-related stresses, water pollution and adverse socio-economic effects on farmers and rural communities. The review highlights practical barriers to soil conservation, such as limited awareness, weak extension support, poor policy implementation, fragmented institutional responsibilities and financial constraints among smallholder farmers. Management options discussed in the manuscript include sustainable land management, conservation tillage, organic manure, cover crops, crop rotation, agroforestry, afforestation, contour farming, bunds, terracing, improved irrigation and community-based conservation supported by appropriate policy frameworks. These approaches aim to restore soil structure, improve nutrient availability, conserve water and reduce further erosion. Overall, soil degradation is presented as a multidimensional problem requiring integrated ecological, agronomic, social and policy responses. Sustained improvement in soil health depends on locally suitable conservation practices, farmer participation, institutional coordination and long-term commitment to protecting soil as a finite natural resource.
Keywords: Soil degradation, soil erosion, soil fertility, sustainable land management, conservation agriculture, soil health, agroforestry, climate change, biodiversity, soil conservation