Cool insights for a hot world: trees and forests recycle water

Anyone who has walked outside on a sunny day knows that forests and trees matter for temperature, humidity and wind speed. Planting trees speaks to concerns about climate change, but the directly important aspects of the tree-climate relationships have so far been overlooked in climate policy where it relates to forest.

That, at least, is the conclusion of a new review. The authors suggest that the global conversation on trees, forests and climate needs to be turned on its head: the direct effects via rainfall and cooling may be more important than the well-studied effects through the global carbon balance.

Yet, current climate policy only recognizes the latter. While farmers understand that trees cool their homes, livestock and crops, they had to learn the complex and abstract language of greenhouse gasses and carbon stocks if they wanted to be part of climate mitigation efforts. Not anymore, if the new perspectives become widely accepted.Read more

The A to Z of soil biodiversity

The soil is the “living, breathing skin of our planet.” It is the basis of food production and essential for clean water, health, greenhouse gas capture and numerous other functions that support life on earth.

Soil biodiversity is intimately connected with all terrestrial life. Thanks to advances in technology and global scientific cooperation, huge strides have been made in our understanding of the dazzling diversity of life forms beneath our feet; and especially that of microscopic bacteria, fungi, and nematodes that are invisible to the naked eye. Read more…

While raising crop yields, African thorn tree Faidherbia albida captures large amounts of carbon

A large, old Faidherbia albida tree with a metre-plus diameter stored the equivalent of the CO2 emitted by 8 cars over one year. These useful trees play an important role in carbon sequestration, a critical part of the effort to reduce greenhouse gas emissions linked to climate change.

People in many areas of Africa gain numerous benefits from the leaves, branches and trunks of the dryland thorn tree Faidherbia albida. Read more. . .

Why food waste is a concern for tropical forest conservation

Does wasting food lead to the loss of tropical forests?

Sacred wood in Cote d'Ivoire. Photo by Emilie Smith/ICRAF
Sacred wood in Cote d’Ivoire. Photo by Emilie Smith/ICRAF

Though not obvious at first glance, researchers say clear links exist between food loss and wastage, and deforestation. This is because clearing intact forests to produce both commodity crops and subsistence crops is one of the main factors (or drivers) that lead to their depletion, particularly in the tropics and subtropics.

“If food waste is not abated, then the land required to produce food is going to increase, especially in view of a sharply increasing global population,” warned Lalisa Duguma, scientist, Sustainable Landscapes and Integrated Climate Actions, at the World Agroforestry Centre (ICRAF) and the ASB Partnership for the Tropical Forest Margins. Lalisa was presenting at a well attended side event of the XIV World Forestry Congress, Durban, 7-11 September 2015. Read more. . .