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Friday 22 December 2017

Climate change and trees: The destruction of forests around the world causes about 10% of greenhouse gas emissions... Achieving large-scale forestation is not just theoretical. We know we can do it because a few countries have done it successfully.

We need trees to help combat climate change - but are we cultivating them well enough?
Futures Forum: The future of our woodland could be in doubt as we fail to plant enough trees > The UK has one of the lowest levels of tree cover in Europe.

In some countries we are doing better:

Rebirth of Forests

For millennia wherever humans settled they depleted forrests. This is not the case anymore in some countries of the world. Higher yields and other factors made it possible to preserve forests and in some countries to increase the forest area. Sustainability was reached in these places.
Forests - Our World in Data

But we need to do much better.

Looking at the 'megatrends' for combating climate change, deforestation is still happening too fast and reforestation not fast enough:

The seven megatrends that could beat global warming: 'There is reason for hope'

Until recently the battle to avert catastrophic climate change – floods, droughts, famine, mass migrations – seemed to be lost. But with the tipping point just years away, the tide is finally turning, thanks to innovations ranging from cheap renewables to lab-grown meat and electric airplanes
Everybody gets paralysed by bad news because they feel helpless,” says Christiana Figueres, the former UN climate chief who delivered the landmark Paris climate change agreement. “It is so in our personal lives, in our national lives and in our planetary life.”
But it is becoming increasingly clear that it does not need to be all bad news: a series of fast-moving global megatrends, spurred by trillion-dollar investments, indicates that humanity might be able to avert the worst impacts of global warming. From trends already at full steam, including renewable energy, to those just now hitting the big time, such as mass-market electric cars, to those just emerging, such as plant-based alternatives to meat, these trends show that greenhouse gas emissions can be halted.
“If we were seeing linear progress, I would say good, but we’re not going to make it in time,” says Figueres, now the convener of the Mission 2020 initiative, which warns that the world has only three years to get carbon emissions on a downward curve and on the way to beating global warming. “But the fact is we are seeing progress that is growing exponentially, and that is what gives me the most reason for hope.”
No one is saying the battle to avert catastrophic climate change – floods, droughts, famine, mass migrations – has been won. But these megatrends show the battle has not yet been lost, and that the tide is turning in the right direction. “The important thing is to reach a healthy balance where we recognise that we are seriously challenged, because we really have only three years left to reach the tipping point,” says Figueres. “But at the same time, the fact is we are already seeing many, many positive trends.”
Michael Liebreich, the founder of Bloomberg New Energy Finance, agrees. “The good news is we are way better than we thought we could be. We are not going to get through this without damage. But we can avoid the worst. I am optimistic, but there is a long way to go.”
Also cautiously hopeful is climate economist Nicholas Stern at the London School of Economics. “These trends are the start of something that might be enough – the two key words are ‘start’ and ‘might’.” He says the global climate negotiations, continuing this week in Germany and aiming to implement the Paris deal, are crucial: “The acceleration embodied in the Paris agreement is going to be critical.”

THE TRENDS


7. Forests: seeing the wood


The destruction of forests around the world for ranching and farming, as well as for timber, causes about 10% of greenhouse gas emissions. This is the biggest megatrend not yet pointing in the right direction: annual tree losses have roughly doubled since 2000.
This is particularly worrying as stopping deforestation and planting new trees is, in theory at least, among the cheapest and fastest ways of cutting carbon emissions. But it is not getting the support it needs, says Michael Wolosin at Forest Climate Analytics. “Climate policy is massively underfunding forests – they receive only about 2% of global climate finance.” Furthermore, the $2.3bn committed to forests by rich nations and multilateral institutions since 2010 is tiny compared with the funding for the sectors that drive deforestation. “Brazil and Indonesia’s governments alone invested $276bn in the same timeframe, in just the four key driver commodities: palm oil, soy, beef and timber,” says Franziska Haupt at Climate Focus.
In fact, new research has shown that better land management could deliver a third of all the carbon cuts the world needs, and Wolosin says there are some grounds for hope that new forests can be planted. “Achieving large-scale forestation is not just theoretical. We know we can do it because a few countries have done it successfully.”
In the past two decades, tree-planting in China, India and South Korea has removed more than 12bn tonnes of CO2 from the atmosphere – three times the entire European Union’s annual emissions, Wolosin says. This action was driven by fears about flooding and food supply, meaning that global warming needs to be seen as equally urgent in this sector. Regrowing forests can also play a crucial role in sucking CO2 out of the atmosphere, which is likely to be necessary after 2050, unless very sharp cuts are made now.

The seven megatrends that could beat global warming: 'There is reason for hope' | Environment | The Guardian
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