Determining the suitable indices for assessment of cover change of west of Karkheh River using satellite data

M. NAJAFI ZILAIE, A. FAKHIREH, A. PAHLAVAN RAVI, Mohsen MORADZADEH, S. NOORI
2019
This study aim to evaluated different vegetation indices for assessment vegetation cover change in 18 years period in desert region of west of Karkheh river. We used satellite data and For change detection, a number of 16 vegetation indices were calculated and compared with vegetation cover assessments at sampling points made during fieldwork. According to land use types and heterogeneous percent vegetation cover, the region was divided into four categories and suitable vegetation index for
more » ... land use was selected. The results show that the highest correlation between NDVI and vegetation cover percentage occurs for forest plantation (R2=0.78). It also showed that MSAVI2 had highest correlation for sandy land cover (R2=0/73), AVI (R2=0.82) and DVI (R2=0.79) indexes have highest correlation with vegetation cover percent in wastelands and arable land, respectively. The use of vegetation indexes is more suitable for the study and changes cover map preparation of these land use. Difference map were prepared in the 3 classes (loss, constant and gain). During the study period, due to desertification projects performed by government and combined plantations in order to enjoy from the people participation and also conversion of mulch-covered areas and wasteland to agricultural lands and gardens, coverage has increased.
doi:10.48393/imist.prsm/jases-v3i1.18928 fatcat:tr5idkc42ndqblkqu55py2qsny