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对黑石顶自然保护区南亚热带低山常绿阔叶林地上部分各层次一些优势种和常见种的干重热值和去灰分热值的测定表明：植物的干重热值受灰分含量影响较大，植物去灰分热值随种类、器官而异，乔木层8种植物地上部分各器官平均去灰分热值在19．261-20．672kJg-1之间，各植物种的平均去灰分热值变化顺序如下：光叶红豆＞显脉新木姜＞福建青冈＞短花序楠＞生虫树＞小叶胭脂＞硬叶稠＞粘木。乔木层各器官的平均去灰分热值是：叶21．417kJg-1，幼枝19．929kJg-1，干树皮19．961kJg-1，干材18．664kJg-1。地上部分各层次相同器官平均去灰分热值有下列变化趋势：乔木层＞灌木层＞草本层，这一关系在植物叶的去灰分热值中表现尤为明显．
The determination of dry weight caloric value and ash removal calorific values of some dominant species and common species in the aerial parts of the southern subtropical lowland evergreen broad-leaved forest in Heishiding Natural Reserve showed that the caloric value of dry weight of plants was affected by ash content Large, plant ash removal calorific value varies with species and organs, the arbor layer 8 kinds of plant aerial parts of the average ash removal calorific value between 19.261-20.672kJg-1, the average removal of ash plant value of calorific value Changes in the order are as follows: Red Ye Hong> New Artemisia variegatus> Cyclobalanopsis glauca> short inflorescence Nan> tree> lobular rouge> hard leaf thick> sticky wood. The average ash removal calorific values of various organs of arbor layer were: leaf 21.417kJg-1, young shoot 19.929kJg-1, dry bark 19.961kJg-1 and dry material 18.664kJg-1. The average change of ash removal caloric value of the same organs at all levels in the aboveground part showed the following trends: arbor layer> shrub layer> herb layer, especially in the ash-to-calorific value of plant leaves.