Bonn, Oct 25 : A United Nations University report, released on Wednesday, finds that drastic changes are approaching if risks to fundamental socioecological systems are not addressed.
The Interconnected Disaster Risks report 2023 published by the United Nations University — Institute for Environment and Human Security (UNU-EHS) warns of six risk tipping points.
They are: accelerating extinctions; groundwater depletion; mountain glaciers melting; space debris; unbearable heat; and uninsurable future.
“Systems are all around us and closely connected to us: ecosystems, food systems, water systems and more,” says the report.
“When they deteriorate, it is typically not a simple and predictable process.Rather, instability slowly builds until suddenly a tipping point is reached and the system changes fundamentally or even collapses, with potentially catastrophic impacts.”
A risk tipping point is defined in the report as the moment at which a given socioecological system is no longer able to buffer risks and provide its expected functions, after which the risk of catastrophic impacts to these systems increases substantially.
These diverse cases illustrate that risk tipping points extend beyond the single domains of climate, ecosystems, society, or technology.
Instead, they are inherently interconnected, and they are also closely linked to human activities and livelihoods.Many new risks emerge when and where physical and natural worlds interconnect with human society.
One example of a risk tipping point that the report explains is groundwater depletion.Underground water reservoirs called aquifers are an essential freshwater resource around the world, and they supply drinking water to over 2 billion people.
Around 70 per cent of groundwater withdrawals are used for agriculture, oftentimes when there is not sufficient water from above-ground sources available.
Today, aquifers help to mitigate half of the losses in agriculture caused by drought, a phenomenon which is only expected to increase in the future due to climate change.
But the report warns that now it’s the aquifers themselves that are approaching a tipping point: More than half of the world’s major aquifers are being depleted faster than they can be naturally replenished.If the water table falls below a level that existing wells can access, farmers can suddenly find themselves without the ability to access water, which puts entire food production systems at risk of failure.
Some countries, such as Saudi Arabia, have already surpassed this groundwater risk tipping point; others, like India, are not far from it.
“As we indiscriminately extract our water resources, damage nature and biodiversity, and pollute both earth and space, we are moving dangerously close to the brink of multiple risk tipping points that could destroy the very systems that our life depends on,” said Dr.Zita Sebesvari, Lead Author of the Interconnected Disaster Risks report and Deputy Director of UNU-EHS.
“Additionally, we also lose some of our tools and options to deal with future disaster risk.”
The analysis reveals that the cases share similar root causes and drivers which are embedded in our actions and behaviours that increasingly put pressure on our systems until they are pushed to the brink of collapse.Reaching these points means new risks will be introduced, many of which we do not yet know of.
“As we approach these tipping points, we will already begin to experience the impacts.Once crossed, it will be difficult to go back,” warned Dr Jack O’Connor, Lead Author and Senior Expert at UNU-EHS.
“Our report can help us see risks ahead of us, the causes behind them and the urgent changes required to avoid them.”
The report does not just define and identify risk tipping points, but it also proposes a new framework to avoid or mitigate the consequences.Solutions fall into two categories: Avoid solutions, which target root causes and drivers of risk to avoid risk tipping points altogether, and Adapt solutions, which help prepare or better address the negative impacts of risk tipping points if they cannot be avoided.
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