Climate Change Impact on Trees and Crops

The possible impact climate change will have on the world’s ability to provide food for its expanding population, and that affects on Tree and Crop production will vary considerably. Where crops are at their maximum heat tolerance, for example in the tropics, heat stress and drier soils may reduce  yields on Tree and Crop products by up to a third. This is where the majority of the world’s poorest people live.
Although elevated CO₂ may benefit valuable crops in certain regions it will also increase the growth rate of weeds and nuisance species. The weeds will also be able to expand their range to higher latitude habitats. The changes in climate will also lead to a pole ward migration of insects and plant diseases, adding to the risk of tree products and crop losses. The biggest problem is that the world’s poorest populations face the biggest risks. These are the people who are highly dependent on isolated agricultural systems, which are the most likely to be affected by the changing climate.