Resumen de Stand characteristics and patterns of species distribution inforest ecosystem of Bangladesh
Stand characteristics of tree species along environmental and disturbance gradients in the different forest management ecosystem were examined. The study plot was divided into three categories as Lawachara National Park (LNP), Reserve forest (RF) and forest boundary (FB). Environmental and vegetation data were collected of 25 (radius=13m) circular sample plots in total 75 plots from each forest management ecosystem by using random sampling; and 5subplots were also chosen from (radius=1m) each plots. Canonical correspondence analysis (CCA) was performed. Multiple linear regression analysis was also conducted. Result of regression analysis found that FB is highly positive effect of environmental variables followed by RF and LNP on species distribution. Result of CCA ordination method revealed that LNP was influenced by organic matter (OM); RF was influenced by organic carbon (OC) and elevation (E); and FB was influenced by pH, K and disturbance (D). The study showed strongly significant differences of stand characteristics of tree species are influenced by variables in different forest management ecosystems. Our study is recommended that identify the most important environmental and disturbance variables that drive stand characteristics of tree species in the different forest management ecosystems of Bangladesh as well as similar ecosystem areas.
