吉林蛟河针阔混交林乔木幼苗组成及其密度格局影响因素
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孟令君,姚杰,秦江环,范春雨,张春雨,赵秀海
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Drivers of composition and density pattern of tree seedlings in a secondary mixed conifer and broad-leaved forest, Jiaohe, Jilin, China
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Ling-Jun MENG,Jie YAO,Jiang-Huan QIN,Chun-Yu FAN,Chun-Yu ZHANG,Xiu-Hai ZHAO
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表4 个体水平幼苗密度模型的赤池信息量准则(AIC)和ΔAIC值
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Table 4 Akaike’s information criteria (AIC) and ΔAIC values of the models for individual-level seedling density
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| 水平 Level | 零模型Null | 生物模型Biotic | 非生物模型Habitat | 全模型 Biotic + Habitat | | AIC | ΔAIC | AIC | ΔAIC | AIC | ΔAIC | AIC | ΔAIC | | 群落 Community | 3 758.3 | 19.5 | 3 738.8 | 0.0 | 3 760.8 | 22.0 | 3 740.3 | 1.5 | | 龄级 Age class | | | | | | | | | | 当年生 One year old | 1 152.7 | 6.5 | 1 147.1 | 0.9 | 1 153.6 | 7.4 | 1 146.2 | 0.0 | | 多年生 Over one year old | 2 503.5 | 13.0 | 2 507.2 | 14.7 | 2 492.5 | 0.0 | 2 500.1 | 7.6 | | 物种 Tree species | | | | | | | | | | 水曲柳 Fraxinus mandschurica | 1 330.2 | 9.2 | 1 321.0 | 0.0 | 1 328.9 | 7.9 | 1 321.8 | 0.8 | | 色木槭 Acer mono | 425.6 | 1.5 | 424.1 | 0.0 | 433.5 | 9.4 | 431.5 | 7.4 | | 紫椴 Tilia amurensis | 533.6 | 0.0 | 539.6 | 6.0 | 543.0 | 9.4 | 542.0 | 8.4 | | 东北枫 Acer mandshuricum | 329.8 | 0.0 | 333.3 | 3.5 | 333.9 | 4.1 | 333.4 | 3.6 | | 红松 Pinus koraiensis | 337.9 | 10.1 | 340.3 | 12.5 | 327.8 | 0.0 | 328.8 | 1.0 |
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