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The Billion Tree Campaign was launched in 2006 by the United Nations Environment Programme (UNEP) as a response to the challenges of climate change, as well as to a wider array of sustainability challenges, from water supply to biodiversity loss. [104] Its initial target was the planting of one billion trees in 2007.
The planting of trees in urban areas is also able to reduce air pollution via the trees' absorption and filtration of pollutants, including carbon monoxide, sulfur dioxide, and ozone, in addition to CO 2.
A eucalyptus plantation in final stages at Arimalam.. The type of tree planted may have great influence on the environmental outcomes. It is often much more profitable to outside interests to plant fast-growing species, such as eucalyptus, casuarina or pine (e.g., Pinus radiata or Pinus caribaea), even though the environmental and biodiversity benefits of such monoculture plantations are not ...
For example, effort placed in planting new trees can take away from maintenance of already established trees. [11] Equity of where urban reforestation occurs may also be questioned. Programs such as California Department of Forestry and Fire Protection's Urban Forestry target these communities, but this is not always the case.
Planting trees in tropical climates with wet seasons has another advantage. In such a setting, trees grow more quickly (fixing more carbon) because they can grow year-round. Trees in tropical climates have, on average, larger, brighter, and more abundant leaves than non-tropical climates.
The reality is more complex than 'one tree planted = less CO2 in the atmosphere'. Why planting trees doesn’t necessarily help fight climate change Skip to main content
It aims to plant 50 million trees. [111] Despite this, the UK government has been criticized for not achieving its tree planting goals. [112] [113] There have also been concerns of non-native tree planting disturbing the ecological integrity and processes of what would be a native habitat restoration. [114]
One important part of sustainable landscaping is plant selection. Most of what makes a landscape unsustainable is the amount of inputs required to grow a non-native plant on it. What this means is that a local plant, which has adapted to local climate conditions will require less work to flourish.