Syllabus: GS3/ Environment
Context
- World Soil Day, celebrated annually on December 5, raises global awareness about the critical role of soil in sustaining life.
World Soil Day
- Background: The concept of World Soil Day was introduced by the International Union of Soil Sciences (IUSS) in 2002.
- The FAO Conference unanimously endorsed World Soil Day in June 2013 and in December 2013, the UN General Assembly responded by designating 5 December 2014 as the first official World Soil Day.
- Theme for 2024: Caring for Soils: Measure, Monitor, Manage.
Importance of Soil
- Foundation of Life: Soil supports plant growth by providing essential nutrients, water, and oxygen, forming the base of terrestrial food chains.
- Ecosystem Services: Acts as a natural water filter, removing pollutants and replenishing groundwater.
- Climate Regulation: Plays a significant role in carbon sequestration, mitigating climate change by storing atmospheric carbon dioxide.
- Biodiversity Hotspot: Soil houses diverse organisms, from microbes to insects, which facilitate nutrient cycling and enhance plant health.
What is Soil Degradation?
- Soil degradation refers to the decline in soil health due to factors such as poor land management, deforestation, overgrazing, urbanization, and overuse of chemical fertilizers and pesticides.
- The FAO estimates that 33% of global soils are moderately to severely degraded.
- In India 90% of topsoil lacks nitrogen and phosphorus, while 50% is deficient in potassium.
Challenges to Soil Health
- Nutrient Loss: Unchecked erosion has led to the depletion of fertile topsoil, affecting crop yields.
- Excessive Chemical Use: Overuse of synthetic fertilizers and pesticides has degraded soil quality, disrupted microbial activity, and reduced organic carbon levels.
- Urbanization: Rapid urban expansion has encroached upon arable land, further reducing soil availability for agriculture.
- Climate Change: Erratic rainfall patterns and rising temperatures exacerbate soil degradation.
Government Initiatives for Soil Conservation
- Soil Health Card Scheme: It provides farmers with soil nutrient status reports to encourage balanced fertilizer use and improve productivity.
- Promotion of Organic Farming: Initiatives like Paramparagat Krishi Vikas Yojana (PKVY) encourage organic farming practices to maintain soil health.
- National Mission for Sustainable Agriculture (NMSA): It focuses on enhancing soil health through integrated farming systems and agroforestry practices.
Global Initiatives
- Global Soil Partnership (GSP): It is an FAO-led initiative to improve global soil governance and promote sustainable soil management.
- United Nations Convention to Combat Desertification (UNCCD): It works to prevent land degradation and promote sustainable land management globally.
- It has a pledge for land degradation neutrality (LDN) by 2030.
- 4 per 1000 Initiative: It aims to increase soil carbon stocks by 0.4% annually to combat climate change and enhance soil health.
Way Ahead
- Integrated Soil Management: Combine organic and chemical fertilizers to restore soil nutrients sustainably.
- Enhanced Monitoring: Use modern technologies such as satellite imagery and AI-based tools to monitor soil health and degradation trends.
- Community Engagement: Encourage local communities to adopt soil conservation techniques like contour plowing and crop rotation.
Source: DTE
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