Definitions
The process in which fertile land loses it's nutrients and becomes infertile--mainly through the practices of agriculture urbanization, poor water management.
What percentage of Earth does drylands cover?
What is 41%?
Number one cause of desertification
What is overgrazing?
A factor that might lead to increases in desertification is ______
(hint: involves the use of GHG's)
What is climate change?
What does DDP stand for?
What is Drylands Development Paradigm?
Desertification is described best as what kind of feedback loop?
What is a positive feedback loop?
This farming technique should be refrained to help conserve the soil structure
What is tilling?
Desertification is a combination of social and ____ factor?
What is biophysical?
Define the CCD and explain its purpose
What is... the CCD aims to provide a concrete definition for desertification and is an internationally binding agreement that provides linkages between the environment and development with regards to sustainable land management
What does increasing the heterogeneity of soils resources result in?
What is it results in degradation of semi-arid regions (e.g. grasslands) and an increase in arid regions (e.g. shrubland), i.e. leads to increased desertification?
FREEBIE--what is one policy you would instill in helping reduce desertification?
student answer :)
____ and ____ are two of many factors impacted due to desertification.
What is soil fertility and vegetation productivity? (other answers are acceptable)
What are H-E systems?
What is coupled human environmental systems, in which humans depend on but also degrade environmental systems if left unmanaged?
Why do drylands populations tend to lag behind in overall health and economic indices?
What is:
1)They are more distant from centers of commerce
2)They are lower priority for decision makers
3)It is harder to deliver services efficiently to remote areas
4) Certain institutional arrangement applied to non dryland communities may not be applicable
?
This type of variable has long turnover times and is hard to reverse.
What is slow variable(s)?
____ ____ growth is a potential driver to increasing desertification, as it is an increasing trend occurring on Earth.
What is a positive feedback loop and provide an example (in correspondence to desertification) ?
student answer :)
Why are slow variables important to desertification?
What is slow variables (such as soil fertility and household capital wealth) are important because once their thresholds are crossed, it causes the ecosystem to move into a new state?
What type of people are best suited to turn to for advice when figuring out how to live in the desert? Why?
What is those with LEK--Local environmental knowledge?
The Rocky Mountains contain ____ due to transition zones created from changes in elevation and other conditions.
What are ecotones?