摘要
对中亚热带丝栗栲群落物种 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 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 =1.85 18x2 - 7.84 86x +14 .5 ,灌木层 5种曲线拟合效果最佳为y =12 4 84e0 .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 。
Species-individuals relationships of Castanopsis fargesiicommunity are studied in the middle subtropics. The results show that there are strong positive rank correlations between any two of the three indices of the residual standard error (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 model. The best curve for arbor is y1.8518x^2-7 8486x+14.5,and the best curve for shrub layer is y12.484e^0.1572x; species abundance of both tree layer and shrub layer obey Log normal distribution,which suggest that this Castanopsis fargesiicommunity development is relatively well, and its stability and biodiversity are very high.
出处
《中国生态农业学报》
CAS
CSCD
2004年第4期170-173,共4页
Chinese Journal of Eco-Agriculture
基金
福建省科技厅重大项目 ( 2 0 0 1F0 0 7
2 0 0 1Z0 2 5 )共同资助
关键词
群落
中亚热带
乔木层
灌木层
物种
成熟
个体
生物多样性
平均值
Castanopsis fargesiicommunity, Species-individuals relationship, Species abundance, Assessment
