پهنه بندي اقليم رويشي حوضه آبخيز كارون با استفاده از روش هاي آماري چند متغيره و سامانه هاي اطلاعات جغرافيايي

Regionalization of Plant Bioclimatology of Karoon Basin Using Statistical Multivariate Methods and GIS

To determine plant bioclimatology over Karoon basin, 52 climatic parameters were selected from climatology and synoptic stations of the study area. These variables affect plants grow th directly. Point data were changed to regional data using geostatistieal methods. Then important factors with variation more than I were determined using factor analysis method. Factor scores were used as inputs in cluster analysis and maps of plant bioclimaiic zones were prepared. Results indicated that 5 factors involved 94.26 percent of the variation. These factors were thermal temperature, precipitation, precipitation of spring, wind and relative humidity vv hieh represent 43.8, 26.96, 13.3, 5.15 and 5.1 percent of variation, respectively. Method of hierarchical cluster showed that Karoon basin with an area of 4275400 ha has 9 plant bioclimatic zones with different capability.