APPLICATION OF GIS IN
GIS is a powerful software technology that allows a virtually
unlimited amount of information to be linked to a
A system for capturing, storing, checking, manipulating,
analyzing and displaying data which are spatially referenced
GIS IN ENVIRONMENT STUDIES
GIS is a powerful tool for
environmental data analysis
A digital basemap can be
overlaid with data or other
layers of information onto a
map in order to view spatial
GIS can provide a quick, comparative view of hazards
(highly prone areas) and risks areas of high risk which may
occur) and areas to be safeguarded.
GIS supports activities
in environmental assessment,
monitoring, and mitigation and can also be used for
generating Environmental models.
GIS IN THE FIELD
The GIS tool is flexible enough to work in the field to give
Combining GIS with mobile technologies, such as GPS and
environmental agencies with mobile solutions that save
time, focus resources, and capture accurate data.
A GIS technology and method to assess
use/cover changes: Conakry, Coyah and
Dubreka region case study.
It sometimes seems inevitable that human and natural
factors can cause landscape changes.
There is an increasing need for standardized land use and
land cover information especially in critical areas of
environmental concern like urban extension and forest
The objective of this study is to evaluate the land use/cover
changes in the study area, and then propose some
The GIS data used in the study will be important reference
1. Land use/cover methods
Land use/cover classification (water, wetland, forest,
grassland, agriculture and housing);
Population increase or decrease model;
2. Data source and processing: (data for information)
Digitizing and interpreting two maps of two different
Topographic map (past) – scale: 1/200 000.
ETM+ image (present) – resolution: 30 · 30.
Pattern of land use/cover in past period map.
Pattern of land use/cover in present period map.
The results of this research show a degraded and
disturbed land use/cover pattern in this region of
study, with the change or disappearance of certain
land cover elements.
In the final analysis, this research shows that
detection and evaluation of the causes and
consequences of land use/cover change may lead to a
possible proposal for a solution, one based on the
geographic information system (GIS).