用灰色系统理论估测西藏红豆杉小枝叶量的研究

Leaf Quantity Estimation on Small Twigs of Taxus wallichiana with Grey System Theory

摘要: 以28株直径为6~18 cm的西藏红豆杉小枝叶量(风干重)为依据,应用灰色系统理论,建立红豆杉径阶小枝叶量GM(1,1)灰色动态模型:∧x_{(K+1)⁽¹⁾=86.196 201e^{0.174 198k}-76.596 201,经检验其预测精度为一级可信,利用此模型可精确计算西藏红豆杉小枝叶量。}

Abstract: According to the average weight of air-dried leaves on small twigs of 28 sampled Taxus wallichiana trees with 6~18 cm in diametera grey dynamic model between tree diameters and leaf quantities on small twigs of Taxus wallichiana was set up with grey system theory.∧x_{(K+1)⁽¹⁾=86.196 201e^{0.174 198k}-76.596 201 It was showed by verification tests that the estimation accuracy of the model reached first grade of credibility.It would be applicable to estimate the leaf quantities on small twigs of Taxus wallichiana by this model in a more scientific and accurate way in the future.}