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Landscapes Forest and Global Change - ESA - Escola Superior ...

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M. Akbarzadeh & E. Kouhgardi 2010. Mapping <strong>and</strong> monitoring l<strong>and</strong> cover <strong>and</strong> l<strong>and</strong> –use changing using RS <strong>and</strong> GIS<br />

335<br />

Table2. <strong>Change</strong> detection details of study area<br />

Class Name 1987 (area in ha) 2002(area in ha)<br />

Crop l<strong>and</strong><br />

Bairsoli<br />

H.<strong>Forest</strong><br />

L.<strong>Forest</strong><br />

Rangel<strong>and</strong><br />

River<br />

Total area<br />

400.52<br />

21128.71<br />

5089.26<br />

14036.59<br />

9049.88<br />

303.7<br />

50008.66<br />

654.76<br />

21931.34<br />

4086.3<br />

13987.45<br />

9021.29<br />

327.52<br />

50008.66<br />

The next l<strong>and</strong> degradation process cause in the study area is water erosion <strong>and</strong> wind erosion,<br />

which are so power full, in l<strong>and</strong>s without vegetation cover or low vegetation cover.<br />

Water <strong>and</strong> wind erosion let to the removal of the relatively fertile top soil <strong>and</strong> this could lead to<br />

desertification.<br />

4. Discussion<br />

The objective of this study was to provide a recent prespective for l<strong>and</strong> cover types <strong>and</strong> l<strong>and</strong><br />

cover changes that have taken place in the last fourteen years, to integrate visual interpretation<br />

with supervised classification using GIS <strong>and</strong> to examine the capabilities of integrating remote<br />

sensing <strong>and</strong> GIS in studying the spatial distribution of different l<strong>and</strong> cover changes.<br />

The area of forest st<strong>and</strong>s has decreased considerably. Integrating GIS <strong>and</strong> remote sensing<br />

provided valuable information on the nature of l<strong>and</strong> cover changes especially on the area <strong>and</strong><br />

spatial distribution of different l<strong>and</strong> cover changes.<br />

The main causes of l<strong>and</strong> degradation in the study area are convertion of forest st<strong>and</strong>s to range<br />

l<strong>and</strong>s, range l<strong>and</strong>s to crop l<strong>and</strong>s, <strong>and</strong> convertion of crop l<strong>and</strong>s to bare l<strong>and</strong>s. This problem show<br />

sere to be continued for disclimax <strong>and</strong> needs to be seriously studied, through<br />

References<br />

Akbarzadeh, M., 2007. Using RS <strong>and</strong> GIS for L<strong>and</strong> evaluation in Arasbaran Iran. Ph.D. thesis,<br />

IAU, Science <strong>and</strong> Research University, Tehran, Iran.<br />

Darvish sefat, A., Makhdum, M., <strong>and</strong> Jafarzadeh, H., 2002. Using GIS <strong>and</strong> RS in natural<br />

resources.Tehran University Press, 250 p.<br />

Milne, A., 1988. <strong>Change</strong> detection analysis using L<strong>and</strong>sat imagery a review of methodology.<br />

Proceedings of IGARSS, 88 symposium, 541–544.<br />

Stow, D., 1999. Reducing mis-registration effects for pixel-level analysis of l<strong>and</strong>-cover change.<br />

International Journal of Remote Sensing, 20: 2477–2483.<br />

<strong>Forest</strong> <strong>L<strong>and</strong>scapes</strong> <strong>and</strong> <strong>Global</strong> <strong>Change</strong>-New Frontiers in Management, Conservation <strong>and</strong> Restoration. Proceedings of the IUFRO L<strong>and</strong>scape Ecology<br />

Working Group International Conference, September 21-27, 2010, Bragança, Portugal. J.C. Azevedo, M. Feliciano, J. Castro & M.A. Pinto (eds.)<br />

2010, Instituto Politécnico de Bragança, Bragança, Portugal.

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