Locate of potential habitat of Panicum antidotale and Pennisetum divisum with using AHP and fuzzy logic in GIS ( Ngazeh plain, Ahvaz)

Farhadvand, Somaye (2013) Locate of potential habitat of Panicum antidotale and Pennisetum divisum with using AHP and fuzzy logic in GIS ( Ngazeh plain, Ahvaz). Masters thesis, University of Zabol.

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The plant species growth in a region is influenced by the ecological and environmental factors of that region. To locate the potential habitat of plant species, studding the biological needs and characteristics of the climate in the considered region is essential. In this study, locating the potential habitat in Negaze plains of Ahvaz in Iran for two species of panacium antidotale and pennisetum divisum using GIS, fuzzy logic and analytical hierarchy process was discussed. For this purpose, first the habitats of considered species in the region have been determine and then current status of the species was known as real environmental and ecological needs in specific points and location of this points were recorded with GPS. Also to determine the soil needs of considered species, soil sample was taken from a depth of 0 to 30 cm then experiments related to soil texture, soil acidity ( PH ) and the electrical conductivity was conducted. In the next step the required digital data layers was prepared and data proportional, to project need, was gathered. To calculate the factor of slope physiographic, direction of slope and height had been used from topographic map with 1/25000 scale and then maps of soil properties and ground water level was prepared and standardized with GIS. Fuzzy logic was used for standardization. Thus each of the fuzzy membership function was obtained and then using this function all the layers was fuzzy optimization and was weighting. For this purpose, components of multi criteria decision analysis were used. One of the newest methods is an analytic hierarchy process (AHP) which also has the ability to integrate with GIS. Finally with the integration of data layers in ArcGIS10 program and in the shape of weighting model of hierarchy process ( AHP ) and using of fuzzy membership functions potential habitat maps for each species were obtained individually and they were determined on map and then the resulting map was classified based on potential habitat. Result for pennisetum divisum species’s indicate that 88 ha of selected region is suitable for growth of species and 1983 ha pf selected region has moderate potential to the growth of species. 2155 ha and 1016 ha of considered region is weak and so weak for the growth of species respectively. Also the result of locate potential sites of panicum antidotale species’s indicate that 8 ha of region is so suitable for growth species. 2331 ha, 686 ha and 1198 ha of region is moderate, weak and so weak for the growth of species respectively. To calculate the accuracy of GIS in locating potential habitat, quality fitness fort (kappa) was used and a part of habitat were randomly selected as control sample and not included in the model. After determining the appropriate zones of studied species, this control samples were used for evaluation criteria and accuracy for determining of suitable habitat. The results showed that the model used can determine habitat of two species with an accuracy of 95/3 %.

Item Type: Thesis (Masters)
Uncontrolled Keywords: location, potential habitat, analytic hierarchy process, GIS ،Panicum antidotale ،Pennisetum divisum
Subjects: S Agriculture > S Agriculture (General)
Depositing User: admin admin1 admin2
Date Deposited: 28 May 2016 07:19
Last Modified: 28 May 2016 07:19
URI: http://eprints.uoz.ac.ir/id/eprint/675

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