基于著名的Ｌｏｇｉｓｔｉｃ模型．以时间因子作媒介。推导出一个能较准确描述林木Ｄ—Ｖ关系的一元材积模型──Ｌｏｇｉｓｔｉｃ衍生模型。这是一个既有理论依据。又有实用价值的新模型。实践证明．Ｌｏｇｉｓｔｉｃ衍生模型具有较强的数据拟合能力和广泛的适用性。除林木Ｄ—Ｖ关系外．尚可用于林木Ｄ—Ｈ关系等项研究、具有理论和应用上的双重意义。 Based on the famous Logistic model. Time factor as a medium. Derived a one-dimensional volume model that can accurately describe the relationship of forest D-V - Logistic derivative model. This is an existing theoretical basis. There are new models of practical value. Practice proved. Logistic derived model has strong data fitting ability and wide applicability. In addition to the forest D-V relationship. It can be used in the study of the relationship between D-H and other trees, which has dual meaning in theory and application.