辽东山区主要阔叶树种叶片养分含量和再吸收对落叶时间的影响

申奥,朱教君,闫涛,卢德亮,杨凯

Effects of leaf nutrient concentration and resorption on leaf falling time of dominant broadleaved species in a montane region of eastern Liaoning Province, China

SHEN Ao,ZHU Jiao-Jun,YAN Tao,LU De-Liang,YANG Kai

表3 不同树种成熟叶(8月中旬)与凋落叶大量养分元素含量(mg·g^-1) (平均值±标准误差)

Table 3 Macroelement concentrations of mature (middle August) and senescent leaves of different tree species (mg·g^-1) (mean ± SE)

树种 Tree species	年 Year	N		P		K		Ca		Mg
树种 Tree species	年 Year	成熟叶 Mature leaves	凋落叶 Senescent leaves	成熟叶 Mature leaves	凋落叶 Senescent leaves	成熟叶 Mature leaves	凋落叶 Senescent leaves	成熟叶 Mature leaves	凋落叶 Senescent leaves	成熟叶 Mature leaves	凋落叶 Senescent leaves
蒙古栎 Quercus mongolica	2016	25.01 ± 1.42^a	10.40 ± 0.42^a	1.55 ± 0.05^a	0.83 ± 0.07^a	9.63 ± 0.78^a	4.83 ± 0.16^a	9.61 ± 0.68^a	32.08 ± 1.34^a	2.04 ± 0.04^a	2.14 ± 0.13^a
蒙古栎 Quercus mongolica	2017	23.50 ± 0.70^A	10.19 ± 0.32^A	1.15 ± 0.03^A	0.37 ± 0.03^A	7.27 ± 0.30^A	2.87 ± 0.33^A	10.99 ± 0.62^A	15.45 ± 0.68^A	1.57 ± 0.09^A	1.53 ± 0.08^A
色木槭 Acer mono	2016	22.67 ± 0.38^a	16.16 ± 0.78^b	1.11 ± 0.05^b	0.56 ± 0.07^b	9.02 ± 1.16^b	6.82 ± 0.37^b	16.94 ± 1.76^b	21.00 ± 1.77^b	3.09 ± 0.32^b	3.10 ± 0.23^b
色木槭 Acer mono	2017	22.31 ± 0.38^A	14.71 ± 1.17^B	1.10 ± 0.06^A	0.66 ± 0.06^B	8.54 ± 0.34^B	5.71 ± 0.40^B	17.56 ± 0.58^B	24.07 ± 0.59^B	2.93 ± 0.10^B	4.13 ± 0.04^B
胡桃楸 Juglans mandshurica	2016	26.32 ± 1.27^a	21.18 ± 1.60^c	1.54 ± 0.02^a	0.86 ± 0.03^a	14.94 ± 0.98^b	12.89 ± 0.88^c	17.63 ± 1.10^b	18.50 ± 0.89^b	2.66 ± 0.17^a	2.11 ± 0.23^a
胡桃楸 Juglans mandshurica	2017	27.34 ± 0.72^B	23.64 ± 1.47^C	1.49 ± 0.07^B	1.19 ± 0.09^C	14.89 ± 0.37^C	12.87 ± 0.68^C	19.21 ± 1.11^C	21.45 ± 0.79^B	2.58 ± 0.18^B	2.53 ± 0.18^C