نوع مقاله : نامههای علمی
نویسندگان
1 استادیار پژوهش، بخش تحقیقات جنگل، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
2 دانشجوی دکتری محیطزیست دانشگاه ملایر
3 استاد پژوهش، بخش تحقیقات جنگل، مؤسسۀ تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
4 دانشیار پژوهش، بخش تحقیقات منابع طبیعی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی چهارمحال و بختیاری، سازمان تحقیقات، آموزش و ترویج کشاورزی، شهرکرد، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The gradual dieback of oak trees represents one of the major environmental challenges confronting the Zagros forest ecosystems, posing a serious threat to the sustainability of biodiversity, water resources, and local communities' livelihoods. This study aimed to evaluate the health status and ecological quality of oak tree bases in two areas with differing ecological conditions in Marivan County over four years (2019–2022). To achieve this objective, the decline in tree vigor and the progression of wilting symptoms at each location were monitored annually. The assessment included classifying trees into four crown health categories and analyzing differences among the categories using nonparametric statistical tests. The results indicated that species composition, crown condition, and certain ecological characteristics—such as stand density—play significant roles in explaining the variation observed in oak health levels. According to the findings, the site characterized by higher species diversity exhibited more stable vitality patterns throughout the study period. These results highlight the importance of long-term monitoring of qualitative indicators and the need to understand ecosystem degradation trends, thereby providing a foundation for developing effective management strategies aimed at conserving the native woodlands of the Zagros region.
کلیدواژهها [English]
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