会议名称：2023世界木材日研讨会暨第五届国际林联（IUFRO）林产品文化研究组讨论会
会议时间：2023年3月22日

报告嘉宾：Ren Divien R. Obeña 
嘉宾简介：菲律宾大学洛斯巴洛斯分校一级研究助理

摘要：
Forests over limestone provides numerous ecosystem services to surrounding communities. In  Philippines, Samar Island is known to house vast area of forests over limestone. Aside from  anthropogenic disturbances in the area that makes these resources vulnerable, pressures are  exacerbated due to the frequent occurrence of typhoon in the island. Hence, it is crucial to  understand the vegetation ecology of the area which may provide insights in formulating appropriate  conservation strategies specific to this area. This study is implemented in one of the protected areas  in Samar Island, the Guiuan Marine Resource Protected Landscape and Seascape. A total of nine (9)  20m x 20m plots were established to assess the tree species (≥1m tall). Plant abundance was  recorded and computed. Soil samples were collected while climate data were obtained from the  Guiuan, Eastern Samar Weather Stations. Classification analysis (cluster analysis) was done using  the relative basal area of trees per plot to identify major plant communities. The canonical  correspondence analysis was done to identify the environmental variables that influence the plant  data set. Results show that GUI 02 plot was the most diverse, had highest in Simpson 1-D index and  Fisher’s alpha, as well as highest in total number of tree species among all observed plots. The  anthropogenic stresses in the area affect the species abundance in plots GUI 1 and GUI 8 plots. The  results of cluster analysis shows that there three (3) vegetation clusters in the area. Canonical  correspondence analysis identified that elevation and temperature as the major factors influencing the vegetation structure in GMRPLS. This study provides valuable information about the species  composition and factors influencing the vegetation structure of the GMRPLS. findings of this study  may serve as a baseline for developing effective conservation policies to sustainably managed  protected area.