Relating the land-use changes to the invasion of Pneumatopteris afra in Nigeria using remote sensing

Zakaria Rahmad), . and Akomolafe Gbenga Festus, . Relating the land-use changes to the invasion of Pneumatopteris afra in Nigeria using remote sensing. pp. 1345-1365. ISSN 2231-8526

The study aimed at using satellite remote sensing in identifying the land-use changes that have occurred in Lafia Nigeria within the past 35 years especially in relation to the current and the predicted future invasion of a fern (Pneumatopteris afra). Landsat satellite images OLI/TIRS ETM and TM within the interval of 15 years from 1985 to 2020 were used for the extraction of land-use. Six broad classification systems were used to classify the land-use changes by employing a supervised classification technique. In 1985 the bare land dominated the land-use having an area of 69156 ha while the wetland was the least having an area of 3412 ha. However in 2020 the built-up area has dominated the land-use of Lafia with an area of 144645 ha (52.21) while the wetland still remained the least with area of 1477 ha. This is obviously due to the geometric increase in the urbanization of this city. There was a consistent loss of the forests from 1985 to 2020 with an annual rate of loss of 0.46. This resulted in a loss of 44329 ha of forests in 2020 out of the 47643 ha in 1985. This approximately leads to a total loss of 172 732 045 USD of forest products. The current invasion of Pneumatopteris afra in Lafia was found to fall within the shrub and grasses land-use class. This indicates that the landsat satellite could not detect the wetlands where the plant dominated due to its massive covering. This study calls for immediate conservation of the remaining forests and wetlands in Lafia to prevent further encroachments and invasion by plants.

Full text available from: Official URL: http://www.pertanika.upm.edu.my/resources/files/Pe...

Abstract

The study aimed at using satellite remote sensing in identifying the land-use changes that have occurred in Lafia Nigeria within the past 35 years especially in relation to the current and the predicted future invasion of a fern (Pneumatopteris afra). Landsat satellite images OLI/TIRS ETM and TM within the interval of 15 years from 1985 to 2020 were used for the extraction of land-use. Six broad classification systems were used to classify the land-use changes by employing a supervised classification technique. In 1985 the bare land dominated the land-use having an area of 69156 ha while the wetland was the least having an area of 3412 ha. However in 2020 the built-up area has dominated the land-use of Lafia with an area of 144645 ha (52.21) while the wetland still remained the least with area of 1477 ha. This is obviously due to the geometric increase in the urbanization of this city. There was a consistent loss of the forests from 1985 to 2020 with an annual rate of loss of 0.46. This resulted in a loss of 44329 ha of forests in 2020 out of the 47643 ha in 1985. This approximately leads to a total loss of 172 732 045 USD of forest products. The current invasion of Pneumatopteris afra in Lafia was found to fall within the shrub and grasses land-use class. This indicates that the landsat satellite could not detect the wetlands where the plant dominated due to its massive covering. This study calls for immediate conservation of the remaining forests and wetlands in Lafia to prevent further encroachments and invasion by plants.

[error in script]

Item Type:	Article
AGROVOC Term:	Ferns
AGROVOC Term:	Plant establishment
AGROVOC Term:	Land classification
AGROVOC Term:	GIS
AGROVOC Term:	Remote sensing
AGROVOC Term:	Satellite imagery
AGROVOC Term:	Forest land
AGROVOC Term:	Wetlands
AGROVOC Term:	Land use
AGROVOC Term:	invasive species
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/9358

Actions (login required)

View Item