Heating requirements are one of the most important human issues in the fields of agriculture, tourism and energy management in the present and future .Knowing the extent of these changes can be very effective in making decision makers. The purpose of this study is to examine the changes in the requirements of the heating degree day in conditions of climate change in southern Khorasan province. For this purpose, daily data from the minimum and maximum temperature of 11 stations of the South Khorasan province were received from the Meteorological Organization of Iran during the period of 1990-2015. The latest available scenarios of the fifth report of the Climate Change Interagency Panel (AR5 2014) include RCP scenarios from the Canadian Climate Change website and, using the SDSM macroeconomic statistics software, the data for the upcoming period (2016-2046) in the study area was thrown off. Using the Matlab software capability, the monthly and annual heating requirements of the stations were calculated in the current and future period. Finally, using the Kriging interpolation method, the zoning maps for cooling requirements for the current and future period are mapped in ArcGIS software. By examining the effect of geographic features (latitude and longitude and station height) on the heating needs in the area, it was determined that the role of heights is very effective in changing the heating needs. In the cold months of the year (Azar, Dey and Bahman), the highlands (Qain, Arsak, Fath Abad, Aryan Shahr, Darmian) require higher energy levels due to the need for higher temperatures. Increasing the temperature and warming of the air in the future, especially in the months of Farvardin and Mehr in most places, requires less use of exhaustible equipment in the future.

Broiler is one of the most common sources of poultry meat which has become one of the most popular and fastest poultry production in the world. The performance of broilers is directly affected by increasing or decreasing temperature and heat & cold Stress. In this study, it has been attempted to evaluate the cooling and heating degree-days (HDD and CDD) at different broiler breeding periods for Khorasan Razavi province. For this purpose, monthly mean temperature data for the statistical period (1988-1998) derived from 13 synoptic stations of the province were used. The cooling and heating degree-days were calculated for each of the breeding weeks based on specific thresholds and their spatial distribution was assessed. In the next step, the relationship between the cooling and heating degree-days and geographical parameters were evaluated. The results showed that with increasing latitude, the cooling degree-days decreased and the heating degree- days increased. The northern and western regions of the province have shown greater heating requirements in all broiler breeding periods, while the cooling requirements at different stages of broiler breeding have been higher for the eastern and southern regions of the province. In terms of total cooling and heating requirements, the northeast, southwest and western regions of the province; the cities of Khaf, Gonabad, Kashmar, Sarakhs and Sabzwar have the least heating-cooling requirements in the six-week broiler breeding period and are considered suitable climates for the development of this economic activity.