Figure 1: Farmers transplanting vegetables as part of practical, soil-based food production. Source: Maaseares (2017), “Planting of vegetables,” Kenya. Wikimedia Commons. Licensed under CC BY-SA 4.0. commons.wikimedia.org/wiki/File:Planting_of_vegetables.jpg

Introduction

Soil is the foundation of life on Earth, yet it is the most overlooked. Beneath our feet lies a complex, living ecosystem that produces 95% of the food we eat, filters the water we drink, stores carbon, and supports over 25% of global biodiversity. Without healthy soil, there is no food security, no climate stability, and no sustainable future.

Today, however, this foundation is cracking. Accelerated industrial agriculture, unchecked topsoil erosion, chemical overload, and plastic contamination have pushed global soil systems to a critical threshold. The FAO reports that over 1.6 billion hectares of land are already degraded, with Sub-Saharan Africa experiencing losses faster than the global average. In Nigeria, the impacts are already visible: gully erosion in the Southeast, desertification in the North, and annual topsoil losses of over 18 tonnes per hectare in critical basins.

Soil is a non-renewable biological asset upon which global food security, hydrological stability, and climate resilience depend (Food and Agriculture Organization [FAO], 2020). It can no longer be treated as an infinite resource; it must be recognized, protected, and regenerated as the living system it is.

This article examines the scale of soil degradation, its socioeconomic consequences, and the practical, multi-stakeholder interventions required to restore the pedosphere. From regenerative agroecology and digital soil sensing to youth-led initiatives like Plogging Nigeria, the path forward demands collective action. Because the truth is simple: if we heal the soil, we heal the future.

Our Relationship with Soil: A Shared Responsibility

A Personal and Communal Bond

We are environmental stewards, conscious consumers, and an integral part of the earth's natural cycle. Our relationship with soil is fundamental and direct: everything we consume — the food on our plate, the natural fibers in our clothing, and even the clean water filtered through natural aquifers — originates from the ground beneath our feet. Soil is not just dirt; it is a living ecosystem that sustains us.

Why Healthy Soil Matters

Soil is a dynamic living ecosystem hosting over 25% of global biodiversity (United Nations Convention to Combat Desertification [UNCCD], 2022). A single gram of healthy topsoil harbors billions of micro-organisms, including mycorrhizal fungi, nitrogen-fixing bacteria, and earthworms, driving biogeochemical cycles essential for life (FAO, 2020). Healthy soil underpins 95% of global food production, regulates water purification, and acts as Earth's second-largest active carbon sink (Intergovernmental Panel on Climate Change [IPCC], 2019).

Healthy soil matters because it is the backbone of food security, biodiversity, and climate resilience. Proper waste management, reforestation, and food security cannot be addressed without prioritizing soil health first. Healthy soil leads to healthy crops, resilient communities, and a balanced ecosystem. Our relationship with the pedosphere is inherently intergenerational: previous generations depended on it, we depend on it today, and future generations will inherit whatever condition we leave it in.

Global and Regional Scale of Degradation

Human activity has pushed global soil systems to severe stress:

Global Land Degradation: FAO (2025a) reports that over 1.6 billion hectares of land (>10% of global land area) are degraded, with over 60% of this degradation occurring on agricultural land.
Annual Loss: UNCCD (2022) data indicates that between 2015 and 2019, at least 100 million hectares of healthy land were degraded annually, directly impacting 1.3 billion people. Sub-Saharan Africa experiences land degradation at rates faster than the global average.
Rangeland Impairment: Up to 50% of global rangelands suffer severe degradation, threatening pastoral livelihoods and global food chains (UNCCD, 2024).
Urban Sprawl: Global urban footprints doubled between 1992 and 2015, consuming 24 million hectares of prime cropland (FAO, 2025a).

Nigerian Context: Regional Case Studies

Land degradation presents distinct threats across Nigeria's ecological zones:

Southeastern Nigeria: Severe gully erosion destroys infrastructure, roads, and active farmland.
Northern Nigeria: Rapid desertification, extended droughts, and vegetation loss shrink arable land and intensify resource conflicts.
Kampe Omi Dam Basin Study: Empirical research highlights an average annual topsoil loss of 18.09 tonnes per hectare per year. Crucially, areas classified as having “very high” to “extremely high” erosion risk comprise only 8.39% of the catchment area but account for 66.43% of gross soil loss. This demonstrates the necessity of targeted spatial interventions.

Socioeconomic Fallout of a Broken Relationship

When our relationship with soil breaks down — through land degradation, chemical overload, single-use plastic pollution, and deforestation — the consequences are severe:

Desertification and Erosion: Loss of topsoil leads to infertile land, lower crop yields, and increased vulnerability to flooding. (FAO, 2025b) notes that human-induced land degradation reduces crop productivity by ≥10% for 1.7 billion people globally, directly contributing to child stunting affecting 47 million children under five.
Climate Acceleration: Degraded soil loses its capacity to store carbon, releasing greenhouse gases back into the atmosphere and converting soil from a carbon sink into a net carbon source (IPCC, 2019).
Socioeconomic Instability & Hydrological Collapse: Soil depletion triggers food insecurity, forces rural-to-urban migration, and threatens local livelihoods. Soil structure loss impairs water infiltration, exacerbating floods and accelerating aquifer depletion (IPBES, 2018).

What Must Change: Practical Interventions

A Paradigm Shift

Practical Interventions e must shift from an extractive mindset to a regenerative one. We must stop treating soil as an infinite, industrial resource and start treating it as a fragile living system. On a systematic level, single-use plastic pollution and unsustainable land management practices must end.

Grassroots and Individual Actions

Composting Organic Waste: Separate organic waste at the household level to produce nutrient-rich compost, diverting food scraps from landfills and feeding the soil naturally.
Eliminating Soil Pollutants: Stop the open burning of waste and enforce proper disposal of plastics, microplastics, and hazardous waste that poison the soil biome.
Promoting Micro-Gardening & Reforestation: Plant native trees and maintain small garden patches to restore soil structure, increase organic cover, and prevent erosion.

Pillar A: Regenerative Agroecological Management

Conservation Tillage (No-Till/Low-Till): Eliminating deep mechanical tillage protects fungal networks, reduces soil erosion, and maintains organic carbon structure (FAO, 2023).
Organic Mulching & Permanent Cover Cropping: Maintaining permanent crop residue shields topsoil from thermal stress, reduces moisture evaporation, and enriches organic matter (Lal, 2020).
Leguminous Crop Integration: Incorporating legumes such as cowpea (Vigna unguiculata) restores natural biological nitrogen fixation, reduces reliance on synthetic chemical fertilizers, and restores microbial vitality.

Pillar B: Digital Soil Sensing, Knowledge & Technology

Policy Reform & Partnerships: Collaborative networks linking grassroots organizations like Plogging Nigeria with local governments to enforce anti-littering laws and incentivize sustainable farming practices.

Knowledge Requirements: Widespread environmental education on soil biology, circular economy principles, and sustainable agriculture.
Technology & Sensing Infrastructure: Deploying satellite imagery/GIS for Agro-Ecological Zoning (AEZ), along with affordable bio-composters, soil-testing kits for local farmers, modern waste-sorting infrastructure, and portable Near-Infrared (NIR) sensors to measure Soil Organic Carbon (SOC) and nutrients accurately.

Pillar C: Subsidy Repurposing, Policy & Carbon Credits

Policy Reform & Partnerships: Collaborative networks linking grassroots organizations like Plogging Nigeria with local governments to enforce anti-littering laws and incentivize sustainable farming practices.

Realigning Subsidies: Redirecting government agricultural subsidies toward land stewards who demonstrate verified Sustainable Land Management (SLM) outcomes (UNEP & FAO, 2021).
Soil Carbon Sequestration Credits: Establishing verified carbon markets that financially compensate farmers for building topsoil organic matter over time (Lal, 2020).

Building the Coalition: Who Must Act Together

Soil preservation requires every layer of society: individual citizens, local farmers, urban planners, policymakers, educational institutions, and corporate entities. No single entity can resolve global pedospheric degradation in isolation. Reversing soil depletion requires an integrated alliance spanning multiple societal tiers.

A Collaboration Framework

Peers, community leaders, fellow youth, and municipal authorities are equal partners in this ecosystem:

Peer Influence: Mobilize youth networks and alumni of environmental education programs to lead community cleanups, waste-plogging drives, and household composting initiatives.
Policy Engagement: Partner with local government authorities to establish designated community composting centers and enforce waste management regulations.
Farmer & Market Collaboration: Connect with urban farmers and market vendors to streamline organic waste collection for composting, closing the nutrient loop.

The Plogging Model and the Case for Collective Action

Can any of us fix this alone? No. Soil degradation is a systemic issue, and no single individual, organization, or policy can solve it in isolation. Isolated efforts create isolated impacts. True sustainability requires collective action — a connected network of people working together to restore and protect the earth under our feet.

Youth initiatives that combine physical exercise with community sanitation — such as Plogging Nigeria — play a vital role in removing microplastics and non-biodegradable municipal waste from agricultural topsoils, safeguarding subterranean biodiversity and restoring soil aggregate

Figure 2: Community waste cleanup and sanitation exercise in a Nigerian market. Source: Abike25 (2025), “Cleaning up and sanitation in Nigeria market.” Wikimedia Commons. Licensed under CC BY-SA 4.0. commons.wikimedia.org/wiki/File:Cleaning_up_and_sanitation_in_Nigeria_market_23.png

FIVE- YEAR Implementation Roadmap and Expected Return on Investment

Phased Implementation Plan

Year 1 — Baseline Assessment & Policy Reform: Identify high-risk erosion hotspots using GIS mapping; realign national agricultural subsidies toward SLM outcomes; integrate soil literacy into primary/secondary curricula.
Years 2–3 — Scaling Agroecology & Tech Rollout: Distribute portable NIR soil sensors to extension officers; scale cover cropping and zero-till protocols; expand youth-led waste-plogging drives in transition zones.
Years 4–5 — Impact Auditing & Market Scaling: Audit SOC levels and erosion reduction; connect verified sustainable farms to regional soil carbon markets; scale successful interventions nationally.

Financial Return on Investment

According to UNCCD (2022) assessments, every $1 invested in restoring degraded land yields between $7 and $30 in economic returns. Furthermore, FAO (2025b) models project that reversing human-induced degradation on just 10% of existing croplands can produce enough food to feed an additional 154 million people annually.

Conclusion

Soil degradation is a systemic crisis. No single individual, organization, or government can solve it alone.

The evidence is clear: healthy soil equals healthy food, healthy communities, and a stable climate. The solution is also clear — we must shift from an extractive to a regenerative mindset. Through composting, regenerative agroecology, digital soil sensing, policy reform, and multi-stakeholder collaboration, we can reverse the damage.

Every $1 invested in restoring degraded land yields between $7 and $30 in economic returns, and restoring just 10% of cropland can feed an additional 154 million people annually.

Our call to action is simple: farmers, youth, governments, researchers, and the private sector must work together. Grassroots initiatives like Plogging Nigeria show that community-level action matters.

The soil is speaking. The time to act is now — because when we heal the soil, we heal the future.

Authors

Green Switch Academy (GSA) XXXIV – SoilMate

Green Switch Academy Group (GSAG): The Future Mates

Green Switch Academy Master (GSAM): Priscilla Folayemi

GSAG Members:

1. Ernest Angel

2. Onyinyechi

3. Aishah Moshood

4. Abubakar Muizat

5. Obetta Victor

6. Olujide Jesunseyanu