Ring-width-index of five west african tree species, Aguima Catchment, Benin

Core samples were taken from a total of 191 trees with an increment borer (Suunto, Finland) with an inner diameter of 5 mm at the measured diameter at breast height (DBH = 130...本研究采用内径5 mm的生长锥（Increment Borer，芬兰Suunto公司制造），从共计191株树木的实测胸径（DBH = 130...）位置采集树木芯样。