Monitoring space - time in Karaj from the perspective of landscape ecology ecological green network

Subject Areas :

FAEZE CHEHRAZAR ¹ , حمید رضا جعقری ² , faeze chehrazar ³

1 - univercity of tehran
2 - Faculty Member of Tehran University
3 - univercity of teheran

Received: 2017-07-03 Accepted : 2017-12-10 Published : 2018-02-04

Keywords: landscape ecology, METRIC, Green areas, Green Ecological Network,

Abstract :

Increasing rate of population growth through past three decades has created more built areas and destroyed landscape structural patterns of ecosystems in Karaj city and adjacent areas. Karaj, which was known as a “garden city”, now is a metropolitan area with limited remnants of green spaces. This research aims to study trend of green space changes by landscape ecological approach.Monitoring of landscape changes is based on the comparison of the Landsat images of 2000 and 2013. The satellite images were classified and then landscape metrics was calculated using synoptic method. Our results indicate that overall landscape of Karaj has been more fragmented. Broad scale changes of green spaces in Karaj landscape show decreasing proportional area and mean patch size, and increasing patch edge density and more irregularity in shape, and shrinkage and fragmentation of green space patches.esults indicate th metrics was calculated using synoptic method. Our results indicate that overall landscape of Karaj has been more fragmented. Broad scale changes of green spaces in Karaj lands

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