Remote Sensing, GIS and Forest Inventory MCQs 2026

Crown density/canopy closure ocular estimates are

1. Asatellite orbital mechanics formulas✓
2. Bfield methods sometimes used in reconnaissance inventory✓
3. Ckiln drying schedules✓
4. DCITES permit codes✓

Temporal resolution refers to

1. Aonly tree ring width✓
2. Bhow often a sensor revisits the same area✓
3. Conly bark thickness✓
4. Donly resin viscosity✓

A reliable national forest monitoring approach combines

1. Arumors without maps✓
2. Bonly one undated photograph✓
3. Cremote sensing, field inventory and institutional reporting✓
4. Dabolishing all plots✓

Open-source tools such as QGIS are used to

1. Atap chir pine automatically✓
2. Boperate fire helicopters✓
3. Creplace field DBH measurement entirely✓
4. Dperform many forest GIS tasks cost-effectively✓

Forest carbon inventory builds on

1. Abiomass estimation from inventory and allometry, often with RS support✓
2. Bonly hotel bed counts✓
3. Conly trophy horn lengths✓
4. Donly kiln sticker spacing✓

Buffer analysis in GIS can help

1. Aseason timber✓
2. Bgrade plywood✓
3. Cmap zones around roads, rivers or protected area edges✓
4. Dextinguish crown fire alone✓

Permanent sample plots (PSPs) are used to

1. Ameasure only one-time tourist counts✓
2. Breplace all remote sensing forever✓
3. Ctap resin exclusively✓
4. Dmonitor growth, mortality and ingrowth over time✓

Error of omission in map accuracy means

1. Aa real forest area missed by the classification✓
2. Bextra forest mapped where none exists only✓
3. Cperfect classification✓
4. Donly GPS battery failure✓

Spatial resolution of an image refers to

1. Athe number of forest guards✓
2. Bthe ground size represented by one pixel✓
3. Cthe age of the satellite only✓
4. Dthe timber royalty rate✓

Remote sensing in forestry means

1. Aonly measuring DBH with calipers✓
2. Bacquiring information about forests from sensors without direct contact✓
3. Conly counting nursery bags by hand✓
4. Donly reading the Forest Act✓

GIS stands for

1. AGlobal Insect Survey✓
2. BGeneral Inventory of Sapwood✓
3. CGeographic Information System✓
4. DGreen Irrigation Schedule✓

NDVI is commonly used as

1. Aan index of green vegetation vigor from red and near-infrared reflectance✓
2. Ba timber grading stamp✓
3. Ca resin tapping tool✓
4. Da fire extinguisher type✓

A high NDVI generally indicates

1. Abare rock or water✓
2. Bdense green vegetation✓
3. Cclouds only✓
4. Dasphalt roads✓

Forest inventory aims to

1. Aonly list tourist hotels✓
2. Bestimate area, growing stock, structure and related attributes✓
3. Conly measure river salinity✓
4. Donly count ballot papers✓

Compartment is a classical management unit that GIS can

1. Amap and attribute for planning and control✓
2. Bdissolve into one pixel without meaning✓
3. Creplace with random points only✓
4. Dignore in all working plans✓

Basal area of a stand is

1. Athe leaf area of one seedling✓
2. Bthe park visitor density✓
3. Cthe cross-sectional area of stems per unit ground area✓
4. Dthe resin yield per blaze✓

Volume tables are used to

1. Apredict only rainfall✓
2. Bgrade only plywood glue✓
3. Cset only hunting quotas✓
4. Destimate tree or stand volume from measurable dimensions✓

Radar remote sensing can be advantageous because it

1. Ameasures only bark color in sunlight✓
2. Bworks only indoors✓
3. Creplaces the need for any GIS✓
4. Dcan penetrate clouds and sense structure/moisture-related signals✓

Stratified sampling improves inventory by

1. Adividing the forest into more homogeneous strata before sampling✓
2. Bmeasuring only one tree nationwide✓
3. Cignoring forest type differences✓
4. Dsampling only roadsides always✓

GPS is used in forestry to

1. Aseason timber in kilns✓
2. Btap resin chemically✓
3. Cgrade furniture color✓
4. Drecord locations of plots, boundaries and features✓

A shapefile or geodatabase layer in GIS can store

1. Aonly kiln schedules✓
2. Bonly chemical formulas of preservatives✓
3. Cforest boundaries, roads, plots and other spatial features✓
4. Donly oral folklore without coordinates✓

Raster data in remote sensing is organized as

1. Aonly point GPS posts✓
2. Ba grid of pixels with values such as reflectance✓
3. Conly handwritten ledgers✓
4. Donly timber auction lists✓

Cloud cover is a limitation of

1. ADBH tapes✓
2. Boptical satellite remote sensing of forests✓
3. Cincrement borers✓
4. Dsoil pH kits✓

Change detection in forest monitoring compares

1. Aonly one static photograph forever✓
2. Bonly nursery price lists✓
3. Cimages or maps from different dates to find loss/gain✓
4. Donly wildlife trophy scores✓

Canopy cover estimation from remote sensing helps to

1. Amap forest density and degradation patterns✓
2. Breplace all field plots forever without checks✓
3. Cmeasure only soil pH✓
4. Dcount only termites✓

LiDAR in forestry is valued for

1. Aseasoning lumber✓
2. Bmeasuring canopy height and structure with laser pulses✓
3. Ctapping chilghoza✓
4. Dprinting working plans only✓

Allometric equations relate

1. Aeasy tree measurements to biomass or volume✓
2. Bonly political boundaries to rainfall✓
3. Conly NDVI to ocean depth✓
4. Donly firebreaks to hotel stars✓

A working plan inventory typically estimates

1. Agrowing stock by species/groups and diameter classes✓
2. Bonly the number of smartphones in a village✓
3. Conly marine fish catch✓
4. Donly cement production✓

Accuracy assessment of a classified forest map uses

1. Aonly the map author's opinion✓
2. Bonly the print color brightness✓
3. Creference data to estimate classification errors✓
4. Donly the file size on disk✓

Ground truthing means

1. Acollecting field reference data to calibrate or validate remote sensing✓
2. Baccepting satellite maps without checks✓
3. Cignoring all GPS✓
4. Dburning sample plots✓

Forest type mapping combines

1. Aonly random colors without legend✓
2. Bonly timber prices✓
3. Cremote sensing, ecological knowledge and field checks✓
4. Donly social media likes✓

Illegal logging detection can be supported by

1. Ahiding all imagery✓
2. Bbanning GPS in the field✓
3. Cfrequent satellite monitoring of canopy disturbance✓
4. Dmeasuring only nursery humidity✓

Area of interest (AOI) in a GIS project is

1. Athe chemical AOI of preservatives✓
2. Bthe age of inventory officers✓
3. Cthe brand of calipers✓
4. Dthe geographic extent under analysis✓

Coordinate reference systems matter because

1. Atrees grow only in one projection✓
2. BNDVI cannot be calculated otherwise ever✓
3. CDBH depends on WGS84 only✓
4. Dspatial data must align in a common projection/datum✓

Drone (UAV) imagery is useful for

1. Areplacing all national satellites overnight always✓
2. Bmeasuring deep ocean trenches✓
3. Cissuing forest offence FIRs alone✓
4. Dhigh-resolution mapping of plantations, gaps and damage✓

Growing stock per hectare is a key output of

1. Aonly eco-tourism ticketing✓
2. Bforest inventory analysis✓
3. Conly resin drum counting✓
4. Donly park picnic planning✓

Sampling intensity in inventory is a trade-off between

1. Acost/effort and precision of estimates✓
2. Bignoring all statistics✓
3. Cmeasuring zero plots✓
4. Dusing only one pixel forever✓

Integration of GIS with forest MIS helps

1. Adelete all spatial data✓
2. Bban inventories✓
3. Clink attribute records to mapped compartments and beats✓
4. Dreplace trees with spreadsheets only✓