Latt Myo Min, Park Byung Bae
Department of Environment and Forest Resources, Chungnam National University, Daejeon 34134, Korea.
Department of Natural Resources Management, University of Forestry and Environmental Science, Yezin 15013, Myanmar.
Plants (Basel). 2022 Aug 22;11(16):2180. doi: 10.3390/plants11162180.
The identification of forest community types is essential for prioritizing choices and targets in species and community conservation purposes amid climate change impacts on forest community dynamics. Here, we determined the tree species composition, species diversity, and the forest community types across contrasting topographic and edaphic conditions in Htamanthi Wildlife Sanctuary (HWS), Myanmar. All tree species with diameter at breast height (DBH) ≥10 cm were recorded in 66 plots (625 m), from which the species diversity, density, frequency, dominance, and importance value (IV) of each tree species were measured. The soil hardness (Hd), bulk density (BD), moisture content (MC), organic matter content (OM), texture, pH, total N, and available P, K, Ca, Na, and Mg concentrations were also analyzed. The elevation (ELV) and slope (SLP) were also measured as the topographic factors. Cluster analysis resulted in five distinct forest communities and the soil Ca, Mg, clay proportion, soil hardness, and elevation were the major influencing factors. The species diversity in HWS ranged from low to very high relative values, with 209 tree species belonging to 119 genera and 55 families. Identification of these community types and understanding the diversity levels and major factors influencing the community structure may play a key role in the planning, prioritization, and implementation of species and community conservation strategies amid the unpredictable impacts of climate change on forest community dynamics.
在气候变化对森林群落动态产生影响的背景下，识别森林群落类型对于在物种和群落保护目标中确定优先选择和目标至关重要。在此，我们确定了缅甸赫曼蒂野生动物保护区（HWS）不同地形和土壤条件下的树种组成、物种多样性以及森林群落类型。在66个样地（625平方米）中记录了所有胸径（DBH）≥10厘米的树种，从中测量了每个树种的物种多样性、密度、频率、优势度和重要值（IV）。还分析了土壤硬度（Hd）、容重（BD）、含水量（MC）、有机质含量（OM）、质地、pH值、全氮以及有效磷、钾、钙、钠和镁的浓度。还测量了海拔（ELV）和坡度（SLP）作为地形因素。聚类分析得出了五个不同的森林群落，土壤中的钙、镁、粘土比例、土壤硬度和海拔是主要影响因素。HWS的物种多样性相对值范围从低到非常高，有209个树种，隶属于119属55科。识别这些群落类型并了解影响群落结构的多样性水平和主要因素，可能在应对气候变化对森林群落动态不可预测影响的物种和群落保护策略的规划、优先级确定和实施中发挥关键作用。
