An investigation on the same type of vegetation NDVI changes in different temperature levels of the mountain (Case study: ShirKouh mountains)

Shirkouh mountain is located in Yazd province and is surrounded by arid and semi- arid regions. In fact, it means that this area is the coldest part of Yazd province. The geographic location of this mountain made it a very sensitive ecosystem. Due to these reasons, its vegetation cover plays a very important role in weather conditions and welfare of people living around.
In present study some elements such as satellite images, Remote Sensing technology and Geographic Information System (GIS) were used for surveying climate changes. In this regard, the relationship between climate and temperature changes (as an indicator of climate) and changes in the amount of vegetation in two hot and cold months were obtained using the sampling and satellite data.
The results showed that in April from low temperature to the high temperature NDVI index increased but in Jun, NDVI will increased before 11°and after that this amount will decreased.
The NDVI in same type of plant was different in various classes of temperature ranges. This NDVI difference in various temperature classes in April (Colder period) was more visible than Jun (Warmer period). So it can be inferred that NDVI changes in the same vegetation type in different periods of the year is not change regularly because of elevation and temperature changes. The difference between the hot and cold habitats in a mountainous area can be reduced by increasing the ambient temperature, which is an appropriate indicator to assess the effects of climate change.