the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
| 05 Nov 2020
Soil: the great connector of our lives now and beyond COVID-19
Lucia H. C. dos Anjos
Rafla Attia
Megan Balks
Adalberto Benavides-Mendoza
Martha M. Bolaños-Benavides
Costanza Calzolari
Lydia M. Chabala
Peter C. de Ruiter
Samuel Francke-Campaña
Fernando García Préchac
Ellen R. Graber
Siosiua Halavatau
Kutaiba M. Hassan
Edmond Hien
Ke Jin
Mohammad Khan
Maria Konyushkova
David A. Lobb
Matshwene E. Moshia
Jun Murase
Generose Nziguheba
Ashok K. Patra
Gary Pierzynski
Natalia Rodríguez Eugenio
Ronald Vargas Rojas
Humanity depends on the existence of healthy soils, both
for the production of food and for ensuring a healthy, biodiverse
environment, among other functions. COVID-19 is threatening food
availability in many places of the world due to the disruption of food
chains, lack of workforce, closed borders and national lockdowns. As a
consequence, more emphasis is being placed on local food production, which
may lead to more intensive cultivation of vulnerable areas and to soil
degradation. In order to increase the resilience of populations facing this
pandemic and future global crises, transitioning to a paradigm that relies
more heavily on local food production on soils that are carefully tended and
protected through sustainable management is necessary. To reach this goal,
the Intergovernmental Technical Panel on Soils (ITPS) of the Food and
Agriculture Organization of the United Nations (FAO) recommends five active
strategies: improved access to land, sound land use planning, sustainable
soil management, enhanced research, and investments in education and
extension.
The soil is the great connector of lives, the source and destination of
all. It is the healer and restorer and resurrector, by which disease passes
into health, age into youth, death into life. Without proper care for it we
can have no community, because without proper care for it we can have no
life.
– Wendell Berry (American novelist)
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The coronavirus disease 2019 (COVID-19) pandemic is testing the ability of societies to survive an extreme global situation. Throughout history, humanity has gone through many cataclysms and disasters, but this is the first time in the Anthropocene that we have faced a crisis spanning the whole planet, drastically affecting everybody's lives. The global nature of the pandemic sheds new light on how to ensure food security, which will increasingly depend on sufficient areas of fertile agricultural soils close to population centres. Healthy soils form our most necessary natural resource for food production, on which human existence is dependent (Vargas Rojas et al., 2016).
It is obvious that the COVID-19 pandemic will significantly reshape our lives well into the future, not just during this acute phase. In this vision paper, we, members of the Intergovernmental Technical Panel on Soils (ITPS1) of the FAO2, share our understanding of the crucial role played by sustainable soil management in the new global reality. Indeed, appropriate soil management is imperative for solving and anticipating food security and nutrition requirements that governments and individuals will face in the post-pandemic world.
Our global society often relies on dense and interconnected networks of socio-economic relationships, which, in many respects, are far from efficient from an environmental point of view and do not always support people's food and nutritional needs. Our health is directly linked to the quality of the environment in which we live and to the food we eat, as addressed by the “One Health Initiative”3. The decline of environmental quality, caused by urban development and intensive agriculture, has led in many places to significant losses of natural habitats and biodiversity (FAO et al., 2020). Human impacts on the environment exacerbate the appearance and spread of pathogens (FAO et al., 2020). Strong policies and actions that support healthy and productive soils are needed to assure global food security and sovereignty for urban and rural populations around the world (Wittman and Blesh, 2017). It is vital that soils within or near cities are available, unpolluted, and managed sustainably, to ensure that they can contribute to safe local food production systems.
It has been predicted that more people will die from hunger and starvation due to disrupted food production chains during the pandemic than from the disease itself (FSIN, 2020). Lack of workforce for harvesting and processing, restrictions in transportation and movement of workers due to closed borders and national lockdowns, and shortages of production materials (e.g. seeds, fertilizers) have the potential, in some regions, to cause severe shortcomings in food availability. Even in areas where crop production is not disrupted, many cropping systems are monocultures designed for export and cannot provide a well-rounded diet for local and national populations. Moreover, the disproportionate loss of older people due to the COVID-19 is a threat to secure food production because, in many parts of the world, the vast majority of farmers and people with experience in agricultural management and understanding soil are over 50 years of age (e.g. IFAD, 2019; Eurostat, 2018). Thus, the pandemic may result in a considerable dearth of expertise in the future (Huynh et al., 2020) and thus reduced ability to continue to produce food and manage the soil sustainably everywhere around the globe.
The food supply in urban environments relies on longer and more complex food chains than in rural ones. The main effect of the pandemic in urban environments has been the excessive increase of food prices and food shortages, mainly in low-income countries (Mukiibi, 2020; Competition Commission, 2020). In this situation, urban agriculture, which is already producing about 15 %–20 % of the world's food supply (Lal, 2020b) is playing a critical role in cities with acute food shortages due to the COVID-19. Higher-income urban environments are less affected and have undergone changes in food habits, such as the increase of online food demand (Chang and Meyerhoefer, 2020). In rural areas of low-income countries, farmers are experiencing more severe problems, such as difficulties in purchasing seeds and fertilizers and getting produce to markets (World Farmers Organisation, 2020), besides the financial barriers to credit access. Some cases of illegal land clearing by companies while the locals were locked down have also been reported (Fox et al., 2020).
Additionally, the pressures of the COVID-19 crisis on food systems will also have a direct impact on soil security (Koch et al., 2013). International transport limitations will require a greater emphasis on local and national food production. In places where land suitable for agricultural use is limited, more intensive cultivation of already degraded soils and expansion of agriculture to vulnerable areas could lead to increased soil degradation if not well managed (Willi et al., 2019). Degradation results from depletion of soil carbon and nutrients, increased erosion, over-fertilization, soil salinization, soil pollution and, eventually, the loss of soils (Stocking, 2003), which are non-renewable resources. Soil degradation also results in increased atmospheric CO2 emissions, which contribute to climate change (Olsson et al., 2019).
Perhaps the two main threats in the short term are soil pollution and nutrient depletion. Increase of urban agriculture is faced with the fact that contamination by heavy metals, organic pollutants, antibiotics and petroleum products are among the major constraints limiting the use of urban soils for food production (Menefee and Hettiarachichi, 2018). Moreover, there is evidence that the enormous quantity of disposable plastic gloves and face masks that get into the environment (soils and waters) could increase the accumulation of their related microplastics and fibres within a short time (Fadare and Okoffo, 2020; Aragaw, 2020). Another effect derives from the lack of access to fertilizers to small farmers in low-income countries, as has already been reported in Thailand (Fox et al., 2020), which can easily lead to degradation by nutrient depletion.
To prepare for a global disruption of food production from whatever cause, we suggest a general transition from the current emphasis on globalized food chains (King et al., 2017) to a more balanced approach that also includes well-rounded and diverse local, national and regional food chains. Such a transition will help to build more resilient and secure societies and is in the best interest of countries concerned about the welfare of their citizens. Countries and regions will need to identify ways to promote local food production, a circular agro-economy and recycling residues with potential for agricultural use (Jurgilevich et al., 2016).
Figure 1In the heart of the sustainability concept, the connection with the land and respectfulness between generations lies in the basics and secrets about how to care for soil, which are transferred from older generations to the youth. © Matteo Sala.
Together with such a transition, soils must be carefully tended and protected (Fig. 1). It is essential that we invest in the sustainability of food production systems, and this implies caring for long-term soil health so as to preserve soil structure, fertility, balanced organic matter and nutrients dynamics, biodiversity, and all the related soil ecosystem services (Lal, 2020a). Sustainable food production systems, in particular those that ensure food security for local populations, will require a transformation from land used for extensive large-scale monocultures to highly diverse local agriculture, especially when they are near or within cities, in order to promote food-resilient urban centres (Fig. 2). This change must go hand in hand with the strengthening of small farmers' capacities and soil awareness. It will also be increasingly important to ensure that populations do not exceed the carrying capacity of the lands on which they depend.
Figure 2Urban and peri-urban agriculture to improve nutrition and livelihoods of poor families as part of the Special Programme for Food Security (SPFS) in Caracas, Venezuela. © FAO/Giuseppe Bizzarri.
Several initiatives, since the onset of the pandemic and the beginning of food supply problems, have appeared around the world demonstrating that it is possible to improve food sovereignty thanks to the collaborative work of people. For instance, communities from Sabah (Malaysian Borneo), who are dependent on imports for 75 % of their rice requirements and are having problems sourcing rice from Vietnam and selling cash crops, have recovered their traditional practices and river culture to maintain their protein supply (Ong and Wilson, 2020). In Emilia-Romagna (Italy), a region severely affected by the pandemic, farmer self-organization has ensured the provision of local food, making shorter chains (Diesner, 2020). Other initiatives, such as Slow Food Gardens in many countries in Africa, are strengthening rural small-scale producer communities and therefore ensuring food supply (Mukiibi, 2020). Rural communities in the developing world will require affordable and locally adapted technologies to maintain soil health while supporting diverse and well-rounded food production. For the long term, this requires governments and land owners to care about soils as a finite resource and to implement measures to prevent their degradation (FAO, 2017; Batini et al., 2020).
Future agricultural policies should focus on coherent global agricultural regulations to avoid counterproductive market interferences and to promote collaboration, and they should direct the transition to more diverse balanced systems. In this way, food security can be achieved as much as possible on the basis of local food production chains. Governments should also support research and educational areas that focus on food security (soil, water, seeding, management systems, processing, etc.) even in the midst of global health challenges, since they will be even more important to building post-COVID-19 food resilience. Many countries have strategic grain reserves for meeting future national or international needs that can solve acute food shortages. In much the same way, we need to create “strategic soil reserves”. By this, we do not mean locking away soils that can then be released in the event of a future catastrophic loss of soil. We mean preserving, improving, rehabilitating and protecting lands suitable for agriculture, especially our best peri-urban soils from urban development. Strategic soil reserves can help solve long-term chronic food shortages.
Soil security, as part of global, regional, national and local strategies, will ensure resilience in the face of such crises as we are now experiencing. The overarching goal should be to achieve global food security and avoid enlarging gaps between societies. The above is in line with the UN Sustainable Development Goals: no poverty, zero hunger, clean water, sustainable cities, responsible consumption and production, climate action, and life on land. The Global Soil Partnership recommendations as presented in the Voluntary Guidelines for Sustainable Soil Management (FAO, 2017) or the proposed RECSOIL (FAO, 2019a) mechanism to increase the resilience of soils by increasing soil organic carbon, in the frame of the Koronivia Joint Work on Agriculture Roadmap (FAO, 2018), are now more relevant than ever.
The COVID-19 crisis has focused the world's attention on the vulnerability of its food systems and the need to sustain food production at a regional/country level. In view of the foregoing, the ITPS recommends five active strategies that will ensure that each region/country has enough productive soil that can be managed sustainably to feed its population. These strategies are access to land, sound land use planning, sustainable soil management, research, and education and extension.
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Access to land. It is necessary to revisit the national policies on land tenure to regulate international land ownership. The access of local people to land, food and livelihood must be ensured by avoiding infringement of tenure rights by business enterprises or states (FAO, 2012). In the same way, it is also critical to revisit the importance of small family farms, which contribute greatly to maintenance of healthy soils and resilience of local communities in case of crisis.
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Sound land use planning. The need to preserve and improve local lands with agricultural potential and also to convert or rehabilitate marginal areas when food production is needed, while protecting vital ecosystems, must become a part of land use planning in all urban and rural development schemes. In particular, those soils that have a high value for food production should be protected from land sealing due to urbanization, infrastructure or industrial activities. This can be done, for example, by producing soil suitability maps for crops, using approaches such as the agro-ecological zone (AEZ) (FAO, 2002).
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Sustainable soil management. Site-specific conservation agriculture measures are needed to prevent land degradation and desertification. This will ensure the availability of productive soils for present and future generations. In particular, this requires taking appropriate actions to maintain and, where needed, improve soil fertility through integrated fertilization. Fertilization regimes should consider the nutritional requirements of the crops, the interactions of nutrients with the different soils and their intrinsic fertility, and the development of strategies that minimize soil pollution (FAO, 2019b). In particular, the development of food production in urban areas needs to be approached with caution and to include suitable testing, to ensure that existing soil pollution does not lead to toxic levels of contaminants in the produced food (Li et al., 2018).
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Research. Sustainable and resilient soil systems for food production will require increasing research efforts with new approaches and interdisciplinarity. The threats to sustainable soil management are not new, but research dealing with preserving soil quality for agriculture and reversal of soil degradation will be even more important. Much more research is needed on how to increase and maintain soil organic carbon (Torquebiau et al., 2018). Research in land sealing should be revisited to learn how to “de-seal” soils to bring them back into sustainable use for agriculture and forestry (Artmann, 2016). The focus on urban and peri-urban soils for food production must not be overlooked .
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Education and extension. The inclusion of soils in all levels of education curricula is necessary to increase awareness on the importance of soils in our lives. The strengthening of extension services, technology transfer and capacity-building programmes will support local farmers in applying sustainable practices. The development of mobile soil labs would help with fast diagnoses and with solving problems locally.
From its inception in 2012, the Global Soil Partnership of FAO is working in all these aspects through its five pillars of action (soil management, awareness raising, promoting research, information and data, harmonization), which will acquire more importance in the light of global crises.
Soils are a finite, non-renewable, multi-systemic source of life, and still they are easily overlooked in decision-making acts and policies. A new post-pandemic reality should ensure that soil is recognized as the great connector and service provider that links our lives to all human needs of food, health and security (Moyer, 2020). Caring for soils is imperative to reduce the impacts of global disturbances, such as the current COVID-19 crisis.
No data sets were used in this article.
The authors have contributed in the following ways:
RMP: conceptualization, writing – original draft preparation, review and editing, visualization; LHCDA: writing – original draft preparation, review and editing; RA: writing – original draft preparation, review and editing; MB: writing – original draft preparation, review and editing; ABM: writing – original draft preparation, review and editing; MMBB: writing – original draft preparation, review and editing; CC: writing – original draft preparation, review and editing; LMC: writing – original draft preparation, review and editing; PCDR: writing – original draft preparation, review and editing; SFC: writing – original draft preparation, review and editing; FGP: writing – original draft preparation, review and editing, erg: writing – original draft preparation, review and editing; SH: writing – original draft preparation, review and editing, KMH: writing – original draft preparation, review and editing; EH: writing – original draft preparation, review and editing; KJ: writing – original draft preparation, review and editing; MK: writing – original draft preparation, review and editing; MK: writing – original draft preparation, review and editing; DAL: writing – original draft preparation, review and editing; MEM: writing – original draft preparation, review and editing; JM: writing – original draft preparation, review and editing; GN: writing – original draft preparation, review and editing; AKP: writing – original draft preparation, review and editing; GP: writing – original draft preparation, review and editing; NRE: writing – original draft preparation, review and editing, visualization; RVR: writing – original draft preparation, review and editing.
The authors declare that they have no conflict of interest.
This article is an initiative of the ITPS. As such it has been elaborated on, reviewed by and endorsed by its members, in close collaboration with the GSP Secretariat.
This paper was edited by John Quinton and reviewed by three anonymous referees.
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Food and Agriculture Organization of the United Nations (http://www.fao.org/home/en/, last access: 30 October 2020)
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