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本文对几种树木的枯叶分解速率进行了研究,结果表明枯叶的分解速率因树种不同而异。一年的失重率刺槐、山杏、侧柏、元宝械、黄栌分别为54%、64%、78%、73%、65%。应用指数衰减模型计算枯叶的年腐解率,刺槐、山杏、侧柏、元宝械、黄栌分别为0.490g/(g·a)、0.597g/(g·a)、0.990g/(g·a)、0.800g/(g·a)、0.662g/(g·a)。根据枯叶的化学成分分析表明,枯叶的失重,首先是由粗脂肪、可溶性糖、丹宁、有机碳等的丧失所引起。枯叶在一年的分解过程中,碳、氮含量比值随时间的推移而下降。
In this paper, the rate of the decomposition of dead leaves of several trees was studied. The results showed that the rate of decomposition of dead leaves varied with different species. Weight loss rate of one year Robinia pseudoannse, apricot, Arborvitae, Yuanbao, Huangpi were 54%, 64%, 78%, 73%, 65%. The annual decay rate of dead leaves was calculated by using the exponential decay model. The results showed that the acacia, acacia, arborvitae, oriental arborvitae, Yuanbao and puerariae were 0.490g / (g · a), 0.597g / (g · a) and 0.990g / · A), 0.800 g / (g · a), 0.662 g / (g · a). According to the analysis of dead leaves chemical composition, the weight loss of dead leaves is mainly caused by the loss of crude fat, soluble sugar, tannin and organic carbon. Dead leaves in the decomposition of the year, carbon and nitrogen ratio decreased over time.