Utilisation of Alsat 2A image for the vegetation mapping of an anthropised forest: example of the Tamgout national forest (Tizi Ouzou, Algeria)

K. Sebki, R. Meddour, O. Zanndouche

Abstract


Abstract: Forest vegetation in Algeria was reported to be affected by anthropic impact (fires, overgrazing). The aim of this study is to establish the land cover mapping of the national forest of Tamgout (Tizi Ouzou) using Alsat 2A image. This forest located on the coastal chain of Kabylia (3 800 ha) is known for its high anthropic activities resulting in strongest impacts sheltering a very important forest heritage. It is a cork oak forest slightly degraded, but its ecosystem services and socio-economic value are undeniable for local populations, especially non-timber forest products. The use ENVI 4.5 software processing of Alsat 2A satellite image, focused on supervised classification with minimal distance method, allowed land cover mapping of the Tamgout forest (classification performance: 93,94%, Kappa Index: 0.91). We determined the surface importance of vegetation units identified with a sampling mission on 4 ha of land (i.e. 0.1% of forest total area). Natural forest vegetation was estimated at 1263 ha (33%) of cork oak (Quercus suber), 760 ha (20%) of zen oak (Quercus canariensis), and 945 ha (25 %) of mixed formation. Maquis was about 302 ha (8%). Artificialized units such as bare land, agricultural land and agglomerations were evaluated at 530 ha (14% of forest total area). Our findings serve as a basis for the analysis of spatial and temporal land cover changes, and contribute to a better knowledge of the anthropisation phenomenon, following the recurrent fires, and to the fragmentation process in the Mediterranean forest environment.

Full Text:

PDF

References


Faleh, A.; Lakhouaja, H.; Sadiki, A.; Chaaouan, J. Sig, remote sensing and risk assessment of forest fires "example of the Khezana forest massif (Chaouene province"). Papeles de Geografía 55-56

(2012)37-48.

Bekdouche, F. Evolution after fire of the floristic composition of the cork oak forest of Mizrana (Tizi- Ouzou, Algeria). Science & Technology C 28(2008) 19 - 29.

Bensaid, A. GIS and remote sensing for the study of silting up in an arid zone: the case of the wilaya of Naâma (Algeria), Doctoral thesis in geography, Es-Senia University, Oran, Algeria (2006) 325 p.

Missoumi, A.; Tadjerouni, K. GIS and Alsat1 imagery for forest fire risk mapping, TS13 Risk Management. 2nd FIG Regional conference, Marrakech, Morocco (2003) December 2-5.

Benmessaoud, H.; Kalla, M.; Dridi, H. Use of Alsat1 images to produce a map of land use in semi-arid areas. Case of the Aurès region (Algeria). Proceedings of the Géo flora conference (2007) Nancy 10-12 May.

Haddouche, I.; Benhanafia, K.; Gacemi, M. Spatial analysis of post-fire forest regeneration in the Fergoug forest in Mascara, Algeria. Bois et forêt des tropiques 307 (2011) (1) 23-31

7. Haddouche, I. Remote sensing and the dynamics of landscapes in arid and semi-arid environments in Algeria: the case of Nama region. Doctoral thesis, Tlemcen University, Algeria (2009) 259.

Haddouche, I.; BENHANIFIA, K.; HELLAL, B. Use of remote sensing for the study of deforestation. Case of Djelfa region (Algeria). Ecology-Environment 2 (2006) 1-14.

Lacombe, J P. Introduction to satellite image processing. Tutorials, booklet 2. Department: Agronomy- Environment. ENSA Toulouse (2008) p92.

Canada Centre for Remote Sensing Remote Sensing. Fundamentals of Remote Sensing (2008) Tutorial

Bencherif, K. Map of the physiognomic units of the Senalba Chergui forest (Djelfa - Saharan Atlas, Algeria). Forest department. Faculty of Sciences. University of Tlemcen. Drought Review (2010) (21) p179-186.

Boyossoro Kouadio, H. Contribution of remote sensing and a geographic information system (GIS) to the integrated and participative management of protected areas in CÔTE D’IVOIRE: Application to Comoe National Park (Biosphere Reserve). Study report, University of Cocody (Côte d'Ivoire) (2006).

BNEDER National Bureau of Studies for Rural Development. National Forest Inventory Study. Forest Development Plan (2008) November.

Meddour, R. Bioclimatology, phytogeography and phytosociology in Algeria, example of forest and pre-forest groups in Djurdjurian Kabylia. These of State Doctorate in agricultural science. University of Mouloud Mammeri of Tizi Ouzou (2010).


Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License. Copyright UMMB © 2020 University M'hamed Bougara - Boumerdes. Independance AV., Boumerdes, 35000 Algeria, Tel/Fax: +213 24 91 14 98/ +213 2491-29-51