FOREST MEASUREMENTS FINAL
EXAM QUESTIONS 100% ANSWERED!!
How is Basal Area determined? - ANSWER(dbh)squared * 0.005454
How do you convert chains to acres? - ANSWER(L * W) = (ch)squared
(ch)squared / 10 = ac
How do you "mark" a location using a GPS? - ANSWER1. turn on GPS
2. wait for satellites to orient themselves and lower PDOP
3. press "mark" at position
4. name and save marked position
5. record data (northing, southing, elevation, PDOP) into field notebook
What is PDOP and how can you decrease it? - ANSWERPDOP = Position Dilution of
Precision; it's the ellipse around the actual location of the GPS and accounts for error
in precision. Sometimes low topographic areas or cloudy weather can interrupt
satellite transmission. Waiting for the satellites to reorient themselves will help come
up with a more accurate triangulation.
How do you convert chains to miles? - ANSWER1 ch = 66 ft & 5,280 ft in a mile
(# chains * 66) / 5,280 ft
How are board feet determined? - ANSWER(L * W * D)
How is slope determined? - ANSWERrise/run
How do you convert feet to acres? - ANSWER1 ac = 43,560 ft.squared
How do you convert a reference fraction to an equivalent scale? - ANSWERdivide by
12
1:12000 = 1":1000'
What are some key forest stand characteristics that may be of interest to natural
resource managers and how are they measured? - ANSWER1. Land use history -
aerial and historical photo interpretation
2. Area of plot - dot grid
3. Stand Age - tree coring
4. Age class distribution - stand table development
5. Average dbh - dendrometer
6. Tree height - clinometer
How do you find the quadratic mean diameter? - ANSWERFirst, find the average BA.
Then find the square root of the avg. BA divided by 0.005454
How is total tree height measured? Merchantable? (process & formula) -
ANSWERTotal tree height is taken from 1 chain (66') away. 2 values are determined
EXAM QUESTIONS 100% ANSWERED!!
How is Basal Area determined? - ANSWER(dbh)squared * 0.005454
How do you convert chains to acres? - ANSWER(L * W) = (ch)squared
(ch)squared / 10 = ac
How do you "mark" a location using a GPS? - ANSWER1. turn on GPS
2. wait for satellites to orient themselves and lower PDOP
3. press "mark" at position
4. name and save marked position
5. record data (northing, southing, elevation, PDOP) into field notebook
What is PDOP and how can you decrease it? - ANSWERPDOP = Position Dilution of
Precision; it's the ellipse around the actual location of the GPS and accounts for error
in precision. Sometimes low topographic areas or cloudy weather can interrupt
satellite transmission. Waiting for the satellites to reorient themselves will help come
up with a more accurate triangulation.
How do you convert chains to miles? - ANSWER1 ch = 66 ft & 5,280 ft in a mile
(# chains * 66) / 5,280 ft
How are board feet determined? - ANSWER(L * W * D)
How is slope determined? - ANSWERrise/run
How do you convert feet to acres? - ANSWER1 ac = 43,560 ft.squared
How do you convert a reference fraction to an equivalent scale? - ANSWERdivide by
12
1:12000 = 1":1000'
What are some key forest stand characteristics that may be of interest to natural
resource managers and how are they measured? - ANSWER1. Land use history -
aerial and historical photo interpretation
2. Area of plot - dot grid
3. Stand Age - tree coring
4. Age class distribution - stand table development
5. Average dbh - dendrometer
6. Tree height - clinometer
How do you find the quadratic mean diameter? - ANSWERFirst, find the average BA.
Then find the square root of the avg. BA divided by 0.005454
How is total tree height measured? Merchantable? (process & formula) -
ANSWERTotal tree height is taken from 1 chain (66') away. 2 values are determined
