森林生态系统中枯落物分解速率研究方法

林地枯落物分解率是研究森林生态系统养分循环的重要内容之一，传统的尼龙网袋实测法虽然能提供某一具体年份枯落物分解率的准确数据，但因其费时费力且不能反映整个历史时期的平均水平而难以推广，基于林地枯落物积累平衡原理，首次提出了利用枯落物平衡模型推算枯落物分解率的方法（简称平衡法），并将之应用于黄土残塬沟壑区刺槐林地枯落物分解率的计算。这种由平衡法推算所得枯落物分解率能反映林地的历史水平，弥补了尼龙网袋实测法的不足，建议在森林生态系统研究中推广应用。

Research Method of Litter Decay Rate in Forest Ecosystems

Litter decay rate is one important content of the nutrient cycle research of forest ecosystems. The traditional field method is to leave litter samples in nylon string bags on the forestland and measure its periodically. Although this method can afford us the accurate data of litter decay rate in a particular year, it is difficult to popularize because of its time and effort consuming and useless to reflect the mean level in the whole life of the forest. In addition, this field method can not guarantee its ...