中亚热带丝栗栲群落物种-个体关系的研究

Specie-individuals relationships of Castanopsis fargesii community in the middle subtropics

摘要: 对中亚热带丝栗栲群落物种一个体关系研究结果表明，剩余标准差(RSE)、偏差绝对值平均值(AAD)和相对偏差绝对值平均值(AARD)3个评价指标之间存在极强正秩相关，表明它们对物种一个体关系模型评价结果具很强一致性，乔木层5种曲线拟合效果最佳为Y=1．8518x²-7．8486x+14．5，灌木层5种曲线拟合效果最佳为Y=12．484e^0.1572x；群落中乔木层和灌木层物种多度分布均遵从对数正态分布，表明该丝栗栲群落发展较成熟，稳定性和生物多样性较高。

Abstract: Species-individuals relationships of Castanopsis fargesii community are studied in the middle subtropics．The resu1ts show that there are strong positive rank correlations between any two of the three indices of the residual standard ermr(RSE)，average of absolute deviation(AAD)and average of absolute relative deviation(AARD)．No difference is shown in the assessments to the species-individuals relationship mode1．The best curve for arbor is y=1．8518x²-7．8486 +14．5．and the best curve for shrub layer is Y=12．484e^0.1572x；species abundance of both tree layer and shrub 1ayer obey Log normal distribution，which suggest that this Castanopsis fargesii community development is relatively well，and its stability and biod iversity are very high．