Volume 11, Issue 40 (summer 2007)
jwss 2007, 11(40): 411-423 |
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K. Solaimani, R. Tamartash, F. Alavi, S. Lotfi. Utility of Remote Sensing Data in Estimation of Rangeland Production Case Study: SefidAb Subbasin of The Lar Dam. jwss 2007; 11 (40) :411-423
URL: http://jstnar.iut.ac.ir/article-1-715-en.html
URL: http://jstnar.iut.ac.ir/article-1-715-en.html
Abstract: (18928 Views)
In order to manage the rangeland resources, remote sensing data is able to provide a sensible role of different cases in flora community such as biomass. The study area in SefidAb subbasin of the Lar Dam basin is located in central Alborz, where the climatic condition is semihumid and near to moderate. For the assessment of the sattelite data and their capability in estimation of the range production, Landsat-TM data with different bands was used. In this research, the field data was collected using random-systematic method in 20 sampling units of 200 plots. For geographic coordinates of the sampling units and related pixels in digital data, GPS and also existing benchmark data of the nearest points were used. Then correlation between ground data and vegetation index from different band combination was investigated and the reasonble vegetation indices were obtained. Finally, the best models were extracted for this purpose, which showed sensible relation between the field data and vegetation index. Therefor, it is possible to estimate range production using Landsat TM data related to ground control.
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