remote sensing in vegetation applications agriculture...
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Remote Sensing in Vegetation ApplicationsAgriculture, Forestry, and Ecology
NASA Online Tutorial - Section 3 (http://rst.gsfc.nasa.gov/Front/tofc.html)
• Recognizing Vegetation• The SPOT Satellite; Kenya & Rift Valley of Africa• South West Kansas, U.S.A. and Morocco• The Vegetation Index: Africa and other Scenes• Forest Applications; Amazon Rain Forests; Deforestation• Ecological Damage: Natural and Manmade: Non-
geological Events• Ecological Damage: Natural Geological Events
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Recognizing Vegetation in RS Imagery
• solar radiation• climate factors• availability of chemical nutrients and
water within the host medium
Interactions with Solar Radiation
• Chlorophyll• Spongy mesophyll• Water content• Leaf maturity• Leaf structure
– Broad/needle leaf• Canopy structure (LAI)• Stress
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CIR
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Soil Background
Phenology
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What are the major advantages and disadvantages of Landsat compared with SPOT?
Which is more important, spatial or spectral resolution?
SPOT TM
AVIRIS
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Ghard plains in western Morocco
March, 1986 May, 1986
Band Ratioing
• Use the same band from different dates• Use different bands from the same date
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Multi-band, multi-date classification
TM
AAHIS Hyperspectral
Vegetation Index
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Change Detection
TM Images of Port Renfro on Vancouver Island in BC
MODIS
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What were the drivers of land cover change?
• Developing of cotton farming owing to abundance of water from damming in southern Turkey
Applications
• Environmental monitoring– Forest fires– Hurricane/tornado/flood damage– Volcano eruption/tectonic movement– Land-use/cover change