بررسی تغییر وزن بذور بلوط با تغییر پارامترهای هواشناسی در توده‌های جنگلی استان کردستان (مطالعه موردی: شهرستان بانه)

The forests of Zagros with an area of more than 5 million hectares and supplying more than 40% of the country's water are ecologically very important, and Kurdistan province has 256 thousand hectares of forests, and in recent years, Oak decline and deterioration have spread in these forests. To carry out this research, two sites were selected, including Belvah (Oak decline - southern slope) and Sarki (Oak decline - northern slope) in Baneh county in the northwest of Kurdistan province. Then, in 2019, five permanent trees were determined in each decay classes (healthy and with crown rot) and 25 seeds were collected from these stands from four directions of the crown and the weight of 1000 seeds was measured (harvested in 2021) reseeding was done). One-way analysis of variance and two-way analysis of variance were used to compare the weight of seeds in two research sites and two sampling periods, and data analysis was done using SPSS 20 software. The results showed that in 2019, the highest average weight of a thousand seeds was observed in healthy saraki trees. On the other hand, in the year 2021, the highest weight of 1000 seeds were found in the Oak declined trees of balveh, and this difference was statistically significant. The results of the general comparison of 8 treatments showed that the highest average weight of 1000 seeds were observed in healthy Sarki trees in Oak declined (2019). Th