Land degradation is the deterioration or loss of the productive capacity of the soils for the present and future.
When land is degraded, it is a global challenge that affects everyone through issues like climate change, food insecurity, environmental hazards, loss of biodiversity and ecosystem services, and higher food prices.
Today, land degradation is occurring at an alarming rate, and it is one of the world’s most pressing environmental problems.
Currently over a billion people are affected by it every day.
Without action on our part, the problem will only get worse.
In this blog, we’ll discuss what you should know about the impacts of land degradation and how it’s affecting everyone as we speak.
1. What is land degradation?
According to ScienceDirect, land degradation is defined as the temporary or permanent decline in the productive capacity of the land, and the diminution of productive potential, including its major land-uses (ex: rain-fed arable, irrigation, forests), its farming systems (ex: smallholder subsistence), and its value as an economic resource.
2. Is land degradation a new phenomenon?
Land degradation is unfortunately not new.
It has accompanied humanity since agriculture was widely adopted during the Neolithic era, which was roughly 10,000 to 7,500 years ago.
This time frame is also when the population increased, and there is evidence that the levels of greenhouse gases (particularly carbon dioxide and methane gas) began to increase more than 3,000 years ago.
3. What causes land degradation?
Land degradation is caused by agricultural use, deforestation, and climate change.
The following list includes all of the potential causes of land degradation:
4. Is land degradation caused by humans?
There have been various threats of land degradation that have been known for centuries.
These include water, wind, mechanical erosion, and physical, chemical, and biological degradation.
However, in addition to these types of threats, there are four others that have emerged in the last 50 years.
While these are broad categories, in general, there are more than 36 types of land degradation that can be traced back to human activities (see the list below).
Human activities that can induce or aggravate land degradation:
5. What does land degradation mean for the planet?
Ultimately, land degradation stresses the world’s arable land and pastures that provide food, water, and quality air to all of the people living on the planet.
Land degradation and desertification impact human health in complex ways, and when land is degraded, all of these are interrupted.
Food security and production are reduced, water sources dry up, and populations are forced to move to other (more hospitable) areas.
6. What are the effects of desertification on human health?
Desertification has numerous potentially disastrous effects on human health.
These include:
7. Why is the loss of soil carbon such a big issue?
The world’s soil stores more carbon than the planet’s biomass and atmosphere combined.
Soil organic carbon is essentially biodiversity as it includes microbes, fungi, invertebrates, root matter, decomposing vegetation, etc.
The loss of soil carbon is one of the principal signs of land degradation and the leading challenges for sustainable development, biodiversity conservation, and mitigating and adapting to climate change.
Ultimately, when land is degraded, soil carbon may be released into the atmosphere (along with nitrous oxide) which makes land degradation one of the biggest contributors to climate change.
In fact, roughly a quarter of all anthropogenic greenhouse gas emissions are generated from agriculture, forest, and other land-use sectors.
8. How do you know if your soil is degraded?
Soil is a dynamic entity and its quality cannot be determined based on one single test alone.
However, there are a number of indicators that you can use to evaluate soil fertility and quality.
Several of these indicators include:
If this list seems impossibly long, don’t worry.
The United States Department of Agriculture has a Soil Health Assessment Kit to help you analyze your soil.
9. How do you prevent land degradation?
Land degradation is a huge issue that prevents soils around the world from sustaining agriculture.
Sadly, it’s only beginning to receive the attention it deserves.
If you’re looking to help prevent or resolve existing land degradation, you should turn to the broad array of agroecology practices that can be used to increase carbon in the soil.
These include:
Furthermore, there are numerous known and Indigenous practices that can help revive the soil.
As long as the land is given the correct support, there’s no reason you can’t help bring it back to life.
What’s more, land soil management is one of the most cost-effective climate change mitigation options.
An increase of just 1 percent of the carbon stocks in the top meter of the world’s soils, would be higher than the amount of annual anthropogenic CO2 emissions from fossil fuel burning.
This provides an opportunity to reverse land degradation and increase soil organic carbon.
It’s low-cost but provides multiple benefits: climate change mitigation and adaptation, conservation of biodiversity, and increase food production.
Final thoughts
Moving forward, countries should invest in sustainable land management.
This process can be accelerated through policy and financial instruments.
Monitoring and increasing the soil organic carbon is one way to prevent and repair desertification, biodiversity loss, and climate change mitigation and adaptation.
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Disclaimer: we are not lawyers, accountants or financial advisors and the information in this article is for informational purposes only. This article is based on our own research and experience and we do our best to keep it accurate and up-to-date, but it may contain errors. Please be sure to consult a legal or financial professional before making any investment decisions.