Risk Assessment of Vegetation Degradation Using GIS

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dc.contributor.author Masoudi, M.
dc.date.accessioned 2018-02-14T09:25:48Z
dc.date.available 2018-02-14T09:25:48Z
dc.date.issued 2018-02-14
dc.identifier.uri http://hdl.handle.net/123456789/4101
dc.description.abstract The entire land in the Southern Iran faces problems arising out of various types of land degradation, of which the vegetation type forms one of the major ones. The Payab basin (522,470 ha), which covers the lower reaches of Mon d River, was chosen for a test risk assessment of this type. The different kinds of dat a for indicators of vegetation degradation were taken from the records and publish ed reports of Iran governmental offices. A new model was developed for assessing th e risk of vegetation degradation. Taking into consideration nine indicators of vegeta tion degradation, the model identifies areas with ‘Potential Risk’ (risky zones) and areas of ‘Actual Risk’ projecting the probability of the worse degradation in future. The preparation of risk maps, based on the GIS analysis of these indicators will be helpfu l for prioritizing the areas to initiate remedial measures. A hazard map for each indicator was first prepared in GIS by fixing the thresholds of severity classes of the indicator s. The risk classes were defined on the basis of risk scores arrived at by assigning the ap propriate attributes to the indicators and the risk map prepared by overlaying some nine hazar d maps in the GIS. Areas under actual risk were found to be widespread (93%) in th e basin and when the risk map classified into subclasses of potential risk with d ifferent probability levels the model would project a statistical picture of the risk of vegetation degradation. en_US
dc.language.iso en en_US
dc.publisher JKUAT en_US
dc.subject Vegeta tion degradation. en_US
dc.subject Potential risk en_US
dc.subject Indicator en_US
dc.subject GIS en_US
dc.subject Actual risk en_US
dc.title Risk Assessment of Vegetation Degradation Using GIS en_US
dc.type Working Paper en_US

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