ENV100Y5 Chapter Notes - Chapter 10: Pinus Ponderosa, Land Trust, Sustainable Forest Management
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ENV100Y5 Full Course Notes
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Document Summary
Chapter 10- forest ecosystems: forest ecosystems cover 30% of earth"s land surface, contain 90% of terrestrial biodiversity, to grow a forest: 25% of world"s natural forest is in canada. (fe,mn, b,z,cu,mb,ci: forests create, store and mobilize nutrients and water. Soil interactions: nutrients, transpiration stream: fungal symbiosis: mycorrhizae. Plant gets increased surface area for nutrient absorption; fungus get carbohydrates. Mycorrhizae critical to plant success" productivity: endomycorrhizae. Fungus forms a sheath around root: animals are important in dispersing fungal spores in many forest ecosystems, soils supply water and nutrients to trees, transpiration stream. To transport water, water must be lost. Redwood: evaporates 160 gal. /d: mature forests are complex ecosystems, trees provide many ecological services. Crucial link in nutrient and water cycles. Store carbon, release oxygen, moderate climate: forests are economically valuable. Ntfps= non timber forest products such as medical, herbal, decorative, and edible products: forests are home to 300 million people. >1. 6 billion people depend on forests for their livelihoods.
