不同海岸距离上木麻黄凋落叶金属元素含量及归还量动态特征

袁锋, 王艳艳, 李茂瑾, 江传阳, 刘贺娜, 李坤玲, 洪滔, 吴承祯, 陈灿

Dynamic characteristics of metal element content and return of Casuarina equisetifolia litter at different distances to the coastline

YUAN Feng, WANG Yan-Yan, LI Mao-Jin, JIANG Chuan-Yang, LIU He-Na, LI Kun-Ling, HONG Tao, WU Cheng-Zhen, CHEN Can

表4 不同海岸距离木麻黄凋落叶金属元素养分归还量(kg·hm^-2)(平均值±标准偏差)

Table 4 The amount of nutrients returned from the litter of Casuarina equisetifolia at different distances to the coastline (kg·hm^-2)(mean ± SD)

海岸距离 Coastal distance (m)	Na	Mn	Fe	Cu	Zn
30 (T₁)	56.196 ± 19.596^a	0.636 ± 0.264^b	2.388 ± 1.008^a	0.037 ± 0.012^a	0.178 ± 0.048^ab
60 (T₂)	59.136 ± 23.580^a	0.960 ± 0.264^ab	2.364 ± 0.924^a	0.038 ± 0.024^ab	0.176 ± 0.072^ab
90 (T₃)	53.532 ± 17.136^a	0.876 ± 0.360^ab	1.848 ± 0.696^ab	0.026 ± 0.012^ab	0.174 ± 0.060^ab
120 (T₄)	40.656 ± 21.816^ac	0.612 ± 0.252^ab	1.572 ± 0.756^ab	0.020 ± 0.012^b	0.110 ± 0.048^b
150 (T₅)	25.896 ± 10.416^bc	0.528 ± 0.216^ab	1.176 ± 0.432^b	0.024 ± 0.012^ab	0.116 ± 0.048^b
300 (T_CK)	15.864 ± 10.908^b	1.848 ± 1.512^a	1.476 ± 0.948^ab	0.026 ± 0.024^ab	0.128 ± 0.068^a
平均值 Mean	41.880 ± 17.733	0.910 ± 0.489	1.804 ± 0.492	0.029 ± 0.007	0.147 ± 0.0.32