The Stinking Bean Trefoil (Anagyris foetida L.) Structure in Zagros (Case Study of Gilan-e Gharb Forests)

Quantitative structure description can be used as one of the most important tools in forest management. The study of the structural characteristics of unique species such as Stinking Bean Trefoil (Anagyris foetida L.) has a high priority and its conservation is essential. Therefore, Current research is attempting to scrutinize the structural properties of this species. The study area with 930 hectares located on 7 kilometers east of Gilan-e Gharb city from Kermanshah province. For this study, the target range was first determined and then bounded using GPS. Subsequently, sampling was prepared by systematic-random sampling. Species type, diameter, height, canopy including main canopy and minor canopy were sampled. Furthermore, the distance and azimuth of each tree were calculated and recorded. The results showed that the most important tree species were Stinking Bean Trefoil, Oak, Fig and Hawthorn with 62.1%, 27.6%, 5.7% and 4.84% respectively. The cross section for Stinking Bean Trefoil is about 0.2 m3/ ha, for other species it is 0.5 m3/ha and for total stand about 0.74 m3. ha-1. Stinking Bean Trefoil, Persian oak and other species is 65.55%, 26.2% and 8.25%, respectively. Most of the indices showed clustered spatial pattern.