Spherical Densiometers for Forest Canopy Measurement
The spherical densiometer is the standard instrument for measuring forest canopy closure — a key variable in habitat assessment, riparian management, and silvicultural prescriptions. CSP Forestry carries professional densiometers in both convex and concave models. The instrument uses a gridded, curved mirror to sample canopy cover at four points around the observer, providing a statistically valid estimate of canopy closure percentage. Both models are compact, durable, and easy to use by field crews with minimal training.
Add your densiometer to a complete forest measurement toolkit alongside clinometers, angle gauges, diameter tapes, and increment borers. Carry it all in a well-organized cruiser vest and record data in a waterproof field book. Browse our full surveying and forest measurement supplies catalog.
Frequently Asked Questions
How do you use a spherical densiometer?
Hold the densiometer level and count the number of grid intersections that reflect canopy (not sky) in four cardinal directions. Average the counts and apply the correction factor to estimate canopy closure percentage. Each reading takes about 30 seconds with practice.
What is the difference between convex and concave densiometers?
Convex densiometers reflect a wide hemispherical view of the sky, useful for open or irregular canopies. Concave models reflect a narrower, more overhead-focused view. Both provide valid canopy closure estimates; the choice depends on protocols used by your agency or research program.
When is canopy measurement required?
Canopy measurement using densiometers is required for riparian buffer assessments, forest practices act compliance, wildlife habitat surveys, and many USFS and state forestry program monitoring protocols.
What other canopy and forest structure tools do you carry?
Alongside densiometers, we carry clinometers, angle gauges, hypsometers, and range finders for comprehensive stand structure measurement.
