A change detection strategy for monitoring vegetative and land-use cover types using remotely-sensed, satellite-based data
- Sam Houston State Univ., Huntsville, TX (United States)
Changes to the environment are of critical concern in the world today; consequently, monitoring such changes and assessing their impacts are tasks demanding considerably higher priority. The ecological impacts of the natural global cycles of gases and particulates in the earth's atmosphere are highly influenced by the extent of changes to vegetative canopy characteristics which dictates the need for capability to detect and assess the magnitude of such changes. The primary emphasis of this paper is on the determination of the size and configuration of the sampling unit that maximizes the probability of its intersection with a change' area. Assessment of the significance of the change' in a given locality is also addressed and relies on a statistical approach that compares the number of elemental units exceeding a reflectance threshold when compared to a previous point in time. Consideration is also given to a technical framework that supports quantifying the magnitude of the change' over large areas (i.e., the estimated area changing from forest to agricultural land-use). The latter entails a multistage approach which utilizes satellite-based and other related data sources.
- OSTI ID:
- 6505470
- Journal Information:
- Remote Sensing of Environment; (United States), Vol. 43:2; ISSN 0034-4257
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
29 ENERGY PLANNING
POLICY AND ECONOMY
CLIMATIC CHANGE
MONITORING
PLANTS
REMOTE SENSING
AIR POLLUTION
ENVIRONMENTAL EFFECTS
GASES
GLOBAL ASPECTS
GROUND COVER
LAND USE
PARTICULATES
SATELLITES
FLUIDS
PARTICLES
POLLUTION
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
290301 - Energy Planning & Policy- Environment
Health
& Safety- Regional & Global Environmental Aspects- (1992-)