Trees are important for so many reasons that we’ve already discussed throughout the book. Trees are incorporated into Permaculture projects at all scales and in all climate zones. In the next series of videos we discuss the importance of trees and look at their use in the major climate zones.
Trees in Dryland Climates
Trees in dryland climates are tied into rainwater harvesting earthworks for their establishment. It takes extra water for a tree to get its roots down into the soil where it can survive on rainfall alone. So often times earthworks are constructed to concentrate storm runoff where trees can take advantage of excess water.
- Dryland Salinity
- Dryland Salinity Mitigation and Trees
Trees in Temperate Climates
Throughout the temperate regions, there is adequate rainfall and trees can survive and thrive on their own without needing to divert excess water to them. Many temperate regions will naturally revert to forest anyway if un-managed. So forest management is a big part of designing tree systems in temperate regions.
Trees in Tropical Climates
Trees in the tropics are where nutrients are held, and they play a vital role in stabilizing the tropical ecosystem. The tropics are where we see the most pronounced forest layers, with tall and low canopies, and climbing vines.
- Multifunctional Shade Tree Management in Tropical Agroforestry Landscapes – A Review
- Characterizing the Traditional Tree Garden Systems of Southwest Sri Lanka
Browse the links below to learn more about trees and their uses in the different climate zones.
- Forests in Permaculture by Bill Mollison
- Shelter Trees and Water Saving Techniques
- Bioremediation Basics
- Restoring Natural Stream Hydrology
- Permaculture Design International Restoration Projects
- Urban Experimentation on Getting Rid of Unwanted Plants in a Garden by Joel Glanzberg
- Animals as a Discipline to the System
- Tree Soil Companions in Three Different Climates
- Nitrogen Fixing Trees to Cure N2 Deficiency