Relationship of woody species composition with edaphic characteristics in threatened riparian Atlantic Forest remnants in the upper Rio Doce basin, Brazil

Studies on the composition, richness, and diversity of plant species in tropical communities are essential for understanding relevant ecological processes and for developing appropriate conservation policies. Considering that areas subject to direct impacts due to dam breach may in the long-term present changes in species composition and in soil parameters, we evaluated the composition of the flora, described the current vegetation profile, and evaluated whether differences in species composition was influenced by soil variables of three areas along the Gualaxo River, in Minas Gerais State, Brazil. In addition, we identified important plant species through occurrence and phytosociological parameters for ecological restoration projects in the affected region, serving as reference areas. We sampled plant species with DBH ≥ 5 cm (diameter at breast height – measured 1.30 m above ground level) in 77 plots distributed in three riparian forest areas. We calculated phytosociological parameters...针对热带群落中植物物种组成、丰富度与多样性的研究，对于解析相关生态过程、制定合理的保护政策而言至关重要。鉴于溃坝直接影响区域可能在长期尺度上发生物种组成与土壤参数的变化，本研究针对巴西米纳斯吉拉斯州瓜拉克索河沿岸的三个区域，开展了植物区系组成调查，描述了当前植被概况，并探究了物种组成差异是否受土壤变量的影响。此外，本研究通过物种出现频度与植物社会学（phytosociological）参数，筛选出受影响区域生态修复工程所需的关键植物物种，为该区域提供参考样地。本研究在三个河岸林区域布设的77个样地中，对胸径（DBH，Diameter at Breast Height，即距地面1.30米处的直径）≥5厘米的植物物种进行了调查，并计算了植物社会学参数……