مشخصات پژوهش

عنوان	Long Term Changes in Chilling Requirement in some Selected Climates of Iran
نوع پژوهش	مقاله ارائه شده کنفرانسی
کلیدواژه‌ها	Dormancy, Trend, Climate Change, Chill Accumulation, Winter
چکیده	Deciduous fruit trees require occurrence to cold winter temperatures to fulfill chilling requirements, allowing production of common harvests. Trends in chill accumulation over the last five decades were investigated at a number of main horticultural climate locations in Iran. Historical analysis is an essential first step when making an allowance for potential impacts of climate change. Chill accumulation was detected using three models; the 0–7.2°C (CH), Utah (UM) and Dynamic models (DM). The aim of this study was to evaluate long term change in chill accumulation at Iran. To show in this detection result, differences between locations were found with notable recent declines at Babolsar and increases at Hamedan. Other locations have remained stable with no location exhibiting a consensus increase in chill across all models. Trends in chill accumulation were shown to differ between models with results indicating that the 0–7.2 ◦C model frequently behaved differently to the other chill models. These results highlight the need for multi-modal analysis of chill trends, especially in a climate change context, to avoid maladaptation. Our study showed that winter chill models should thus always be balanced with insequence on the weather site, study period and study situation under which the requirements were determined.
پژوهشگران	علی اکبر سبزی پرور (نفر اول)، رضا نوروزی (نفر دوم)