贡嘎山峨眉冷杉成熟林碳利用效率季节动态及其影响因子

舒树淼, 朱万泽, 冉飞, 孙守琴, 张元媛

Season dynamics of carbon use efficiency and its influencing factors in the old-growth Abies fabri forest in Gongga Mountain, western Sichuan, China

SHU Shu-Miao, ZHU Wan-Ze, RAN Fei, SUN Shou-Qin, ZHANG Yuan-Yuan

表1 峨眉冷杉成熟林乔木层碳利用效率(CUE)结构方程模型标准化影响系数

Table 1 Standardized influence coefficients of the structural equation model (SEM) for the arbor layer carbon use efficiency (CUE) of Abies fabri old-growth forest

影响因素 Impact factor 标准化总影响系数 Standardized total influence coefficients 标准化直接影响系数 Standardized direct influence coefficients 标准化间接影响系数 Standardized indirect influence coefficients 树干CUE Stem CUE 细根CUE Fine root CUE 针叶CUE Needle CUE 乔木层CUE Tree layer CUE 树干CUE Stem CUE 细根CUE Fine root CUE 针叶CUE Needle CUE 乔木层CUE Tree layer CUE 树干CUE Stem CUE 细根CUE Fine root CUE 针叶CUE Needle CUE 乔木层CUE Tree layer CUE 土壤温度 Soil temperature - 0.59 -0.41 0.37 - 0.59 - - - - -0.41 0.37 气温 Air temperature 0.93 - -0.06 0.45 0.93 - - - - - -0.06 0.45 降水 Precipitation 0.09 - -0.40 0.04 0.09 - -0.39 - - - -0.01 0.04 树干CUE Stem CUE - - -0.07 0.48 - - -0.07 0.48 - - - - 细根CUE Fine root CUE - - -0.69 0.63 - - -0.69 0.63 - - - -