Fatemeh Mohammadyari; Hamidreza Pourkhabaz; Morteza Tavakoli; Hossein Aghdar
Abstract
Knowledge of qualitative and quantitative characteristics of changes are extremely important in environmental planning, land use planning and sustainable development. Currently, using vegetation maps is one of the key factors in data production for macro and micro planning. In this research, information ...
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Knowledge of qualitative and quantitative characteristics of changes are extremely important in environmental planning, land use planning and sustainable development. Currently, using vegetation maps is one of the key factors in data production for macro and micro planning. In this research, information of Landsat ETM + and OLI sensors were used to display the temporal and spatial changes of vegetation in Behbahan city in 1999 and 2013 and the value of NDVI index was calculated for two years. In order to evaluate the quality changes of vegetation, the numerical values of the index were classified into 4 classes of different lush green vegetation including land with excellent, very good, good, and poor coverage. Then, the changes were determined using CROSSTAB. The results showed that the qualitative and quantitative changes in vegetation for the study area have been extensive over 14 years, so that, the area of lands with excellent, very good and poor coverage has increased and the area of landswith good coverage, has decreased. The greatest increase in areashas occurred in lands with excellent coverage, so that, it has increased from 5069.76 hectares (ha) in 1999 to 7735.5 ha in 2013. Also, the highestdecrease in areas has occurred in lands with good coverage thathas reached from 34061.4 ha to 27434.43 ha. Finally, the regression equation was obtained to show better relationship between the two parameters of vegetation and temperature. The results confirmed the point that the areas covered with vegetation have lower temperature and vegetation has cooling effects on the surrounding. Therefore, the degradationof the region’s vegetationwill be followed by the warming of the city and many other environmental consequences.
Saeedeh Javanmardi; Alireza Pourkhabbaz; Hamidreza Pourkhabbaz
Volume 18, Issue 70 , August 2009, , Pages 48-53
Abstract
Today, nature reserves are scattered around the world and the process of their establishment has gradually taken place. In most third world countries including Iran, habitat destruction and illegal hunting are among the main problems in the areas under management. Thus, in order to counteract the process ...
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Today, nature reserves are scattered around the world and the process of their establishment has gradually taken place. In most third world countries including Iran, habitat destruction and illegal hunting are among the main problems in the areas under management. Thus, in order to counteract the process of destruction and the expansion of human destructive activities in the protected areas, there is a need for scientific knowledge, expert and capable groups and more research activities in this field, and this need remains in place. National parks, as one of the protected areas, are in fact highly valuable genetic reserves of plant and animal species in each country and in the world, and will be the main backbone for the restoration of nature. To save life on the Planet, resources must be used properly and controlled, and renewable resources must be given the opportunity to form again, so that they can be always used. The Kolahghazi National Park is an example of ecosystems in the Iranian plateau which has a long history of conservation. In this research, the ecosystems, the vegetation cover and wildlife as well biological geography in the park are discussed.
