Volume 13, Issue 47 (4-2009)
jwss 2009, 13(47): 349-365 |
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Barati GHahfarokhi S, Soltani S, KHajeddin S, Rayegani B. Investigation of Land Use Changes in Qale Shahrokh Basin Using Remote Sensing (1975 - 2002). jwss 2009; 13 (47) :349-365
URL: http://jstnar.iut.ac.ir/article-1-1060-en.html
URL: http://jstnar.iut.ac.ir/article-1-1060-en.html
, s_barati@na.iut.ac.ir
Abstract: (36034 Views)
To investigate land use changes, Qale Shahrokh basin (15098.1 ha area) was selected. Satellite images of Landsat sensors (MSS, TM and ETM+) were used. After improvement and different enhancement analysis of images such as FCC, PCA, the study area was checked using GPS and topographic maps (1:50000) and other information. Land use units were determined using classified random sampling method. Maps accuracy was assessed after performing different classifications. Final land use maps of 1354, 1369, 1381 years were produced using a hybrid method with fine accuracy. Trend of land use changes was investigated during the study periods. Results showed that during the first period (1354), most area of land use was rangeland with sparse vegetation cover (%41.6) and least area was irrigated farming (1.5%). Also, during the second period (1354-1369) most area of land use was rangeland with sparse vegetation cover (%43.4) and least area was irrigated farming (4.1%). During the third period (1369-1381), the maximum area of land use was dry farming (%35.6) and minimum of area was irrigated farming (7%). Maximum land use change was related to rangeland with medium vegetation cover. They were changed into dry farming and rangeland with sparse vegetation cover during 1354 to 1369. During 1369 to 1381, maximum land use changes occurred on poor rangeland with sparse vegetation cover and rangeland with medium vegetation cover was changed into irrigated and dry farming.
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