B.S.F. or B.Sc.F. Bachelor of Science in Forestry Bachelor of Science in Forestry: Remote Sensing and GIS in Forestry 2

Question 1

A forester wants to identify all areas within 500 meters of a stream network to define riparian buffer zones in a GIS. Which spatial analysis function should be used?

Accepted Answer

Buffer

Answer

Overlay

Answer

Clip

Answer

Dissolve

Question 2

What is 'ground-truthing' in the context of forest remote sensing?

Accepted Answer

Verifying classified map results with field observations

Answer

Downloading satellite data to a ground server

Answer

Calibrating satellite sensors from a ground station

Answer

Computing elevation values from stereo imagery

Question 3

Which unsupervised image classification method groups pixels into clusters based on spectral similarity without requiring prior training samples?

Accepted Answer

K-means clustering

Answer

Maximum Likelihood Classification

Answer

Support Vector Machine

Answer

Random Forest classification

Question 4

A Digital Elevation Model (DEM) is used in forestry GIS primarily for which purpose?

Accepted Answer

Deriving terrain attributes such as slope, aspect, and watershed boundaries

Answer

Identifying individual tree species from their reflectance

Answer

Mapping soil nutrient concentrations

Answer

Estimating stand age from spectral signatures

Question 5

Which spectral index is specifically designed to detect and map burned forest areas following a wildfire?

Accepted Answer

NBR (Normalized Burn Ratio)

Answer

NDVI (Normalized Difference Vegetation Index)

Answer

EVI (Enhanced Vegetation Index)

Answer

NDWI (Normalized Difference Water Index)

Question 6

Forest fragmentation analysis in GIS commonly relies on which type of landscape metrics to quantify patch size, shape, and connectivity?

Accepted Answer

FRAGSTATS metrics

Answer

LIDAR waveform metrics

Answer

Radiometric calibration factors

Answer

Topographic wetness indices

Question 7

What primary advantage does multispectral satellite imagery offer over traditional black-and-white aerial photography for forest mapping?

Accepted Answer

Ability to distinguish vegetation types based on spectral reflectance differences

Answer

Higher spatial resolution

Answer

Lower data acquisition cost per scene

Answer

Longer historical archive availability