Transcript Quantitative: Forest/Woodland

GLOBE Land Cover Measurements
Basic
Manual Mapping
Land Cover Sample Sites
Accuracy
Assessment
Advanced
MultiSpec
Computer assisted land
cover mapping
Accuracy Assessment
Optional
Biology Site
LC_Vis_1
We need to
compare each
ground site
with a pixel in
the Landsat
image
•Our GPS readings are
accurate to about ± 16
meters.
•Satellite ground tracks do
not exactly cover any one
30 meter by 30 meter site
•If an area is homogeneous
over a 90 m x 90 m area, the
Landsat image and the Land
Cover Site can be aligned
LC_Vis_2
Land Cover Sites
• Qualitative
–
–
–
–
–
All MUC classes
GPS
Photos
MUC
Visit 1 time
• Quantitative
–
–
–
–
–
–
MUC 0, 1, 4
GPS
Photos
MUC
Biometry
Visit 1 time
• Biology
– Quantitative measurements
– Visit 1 or 2 times each year
LC_Vis_8
QUALITATIVE SITES
•
LC_Vis_3
MEASUREMENTS TO MAKE
– Locate center of homogenous
site (90 m X 90 m)
– Complete field data
worksheet
– Identify and record latitude,
longitude, elevation
– Determine MUC class
– Record metadata
– Take a photo in each cardinal
direction (N, E, S, W)
– Report data and send photos
to GLOBE
•
Equipment Needs
– GPS
– Compass
– MUC, GPS, and local
vegetation student field
guides
– Camera
– Qualitative land cover
sample site - field data
work sheet
– Tubular densiometer
– Clinometer
– 50m tape measure
Quantitative: Forest/Woodland
Equipment
•
•
•
•
•
•
LC_Vis_4
Tubular densiometer
Field data work sheet
Compass
GPS
50-meter tape
Pen or pencil
• Clinometer
• Tree species ID guides
• MUC Field
Guide/Glossary
• Biology Site
– Permanent tree
markers
– Site markers
Quantitative:Forest/Woodland
(MUC 0 or MUC 1)
Measurements
•
•
•
•
LC_Vis_5
Canopy cover
Ground cover
Tree height
Tree circumference
•
•
•
•
MUC
GPS
Photos
Tree species ID
Quantitative: Herbaceous MUC 4
Equipment
• Small bean bag
• Grass clippers or strong
scissors
• 6 brown paper bags
• Tubular densiometer
• Biometry Field Data Work
Sheet
• 50 m measuring tape
• GPS
LC_Vis_7
• Compass
• Pen or pencil
• MUC Field
Guide/Glossary
• Clinometer
• Tree species ID guides
• Permanent tree markers
Quantitative: Herbaceous MUC 4
Measurements
•
•
•
•
MUC
GPS
Photos
3 Grass samples
– green
– brown
LC_Vis_6
- If trees are co-dominant
-
Canopy cover
Ground cover
Tree height
Tree circumference
Tree species ID