Environmental Science
AP Environmental Science
Unit 5: Land and Water Use
11th
Ecological Sustainable Forestry
= forestry (using trees fro lumber) that minimizes damage to ecosystem (habitable, destruction, soil erosion, etc.)
Selective cutting or strip cutting
Only cutting some of the trees in an area (biggest and oldest) to preserve habitat (biodiversity) and topsoil
Using human and pack animal labor to minimize soil compaction from machinery
Replanting same species being logged
It maximizes long-term productivity of land and preserves the forests for future generations.
Sustainable Forestry Practices
Using recycled wood, or simply reusing without recycling (furniture, decorations, etc.)
Wood can be chipped and used as mulch for gardens or agriculture fields
Reforestation = replanting of trees in areas that have been deforested
Selectively removing diseased trees to prevent spread of infection through entire forests
Removes host from disease
Decreases density, making spread less likely
Fire Suppression
Stopping natural fires
Fire suppression is the practice of putting out all natural forest fires as soon as they start
Leads to more biomass buildup
Putting out fire immediately leads to more dry biomass buildup
It makes future fires worse
Monitoring instead
Close monitoring can prevent fire damage and worse fires in the furture
Prescribed Burns
Dead biomass builds up
Fuel for large forest fires
Stored nutrients trapped in dead biomass
Dead trees = susceptible to disease and pests spread
Small, controlled fires burn lots of dead biomass
Uses up dead biomass (fuel) preventing larger forest fires later
Promotes nutrient recycling
Nutrients in dead biomass are recycled → new growth