the role of forests Flashcards
what is forestry
- The art, science, and practice of managing forested landscapes to provide a sustained production of a variety of goods and services for society
- Involves the whole ecosystem
- Important for environment and economy
- a system of many components for different services and products
what are the forest ecological values for the world
total value of forest goods and services of a 4.7 trillion USD annually
what are the forest ecological values for china
1.5 trillion USD in 2009 including carbon/oxygen, water/soil conservation, biodiversity and air purification (6 services only)
true or false :forest ecological values are at lead 10 times their commercial value
true
what are the ecological roles of forest
- Climate and global warming
- Protection of water and water associates values (fish habitats, recreation and power regeneration
- Protection of soil
- Important for channel morphology and aquatic habitat
- Other (spiritual values and visual quality)
what is the microclimate related to forest ecosystems
changing radiation balance, temperature and local precipitation
how do forests deal with carbon
Forests can sequester carbon through photosynthesis, and also release carbon from respiration and decomposition; healthy forests normally have net high carbon storage changes and growth rates.
what is the projection for global warming
by the year 2060, the amount of CO2 is expected to double. A change of world average temperature of between 1.5 to 4.5 Celsius is predicted to result from this doubling
what are hydrological processes related to the protection of water
o Mean flows
o Peak and low flows
o Patterns and timing
o Implications for may other related values
Water quality: sediments, nutrients, temperature etc.
Forests and nutrient cycling / budgets
what are effects of soil erosion
o Water quality
o Channel morphology / reservoir capacity
o Loss of soil and land
what is the universal soil loss equation (USLE)
Soil loss = vegetationslopeprecipitation*soil erodibility
Suggesting that vegetation is the only thing we can deal with
How are ways forests help channel morphology
Hydrology, sediments and in-stream wood affect channel morphology
o Forests and hydrology
o Forests and sediments (delivery, transportation, accumulation, deposition processes)
o Forests and In-stream wood (recruitment, transport and accumulation)
why are forests important for habitat and wildlife
in a forest, more species can have high stability (ability to withstand or recover from damage); issues with monoculture
Forests provide critical habitats (vegetations, snags, in-stream wood etc.) for wildlife species
what are hardwood trees
usually broad leveled
not necessarily harder than softwood but they have more complex structures
have pores
what are softwood trees
conifers