热带季雨林不同小生境大戟科植物幼树的叶片结构、耐旱性和光合能力之间的相关性

孙善文, 章永江, 曹坤芳

Correlations among leaf structure, drought tolerance and photosynthetic capacity in saplings of Euphorbiaceae from different micro-habitats in a seasonal tropical rainforest

SUN Shan-Wen, ZHANG Yong-Jiang, CAO Kun-Fang

表2 大戟科植物不同小生境分布类群的叶片性状及方差分析结果(平均值±标准误差)

Table 2 Traits values of the Euphobiaceae plants in different habitats and summary of ANOVA analysis (mean ± SD)

性状 Trait	山脊 Ridge	山坡 Slope	沟谷 Valley	广布种 Cosmopolitan species
SWC (%)	2.660 ± 0.840^ab	1.860 ± 0.330^a	3.280 ± 1.110^ab	4.260 ± 0.770^b
π_o (MPa)	-1.670 ± 0.180^a	-1.740 ± 0.250^a	-1.190 ± 0.220^b	-1.190 ± 0.040^b
π_tlp (MPa)	-1.950 ± 0.180^a	-1.990 ± 0.220^a	-1.400 ± 0.270^b	-1.400 ± 0.020^b
ε (MPa)	15.21 ± 6.540^a	22.32 ± 7.480^a	18.70 ± 6.300^a	11.88 ± 2.190^a
RWC_tlp (%)	84.62 ± 5.280^a	90.70 ± 4.600^ab	92.61 ± 3.560^b	86.99 ± 0.810^ab
LT (mm)	0.670 ± 0.380^a	0.540 ± 0.140^a	0.900 ± 0.300^a	1.100 ± 0.460^a
UET (mm)	0.069 ± 0.036^a	0.061 ± 0.010^a	0.083 ± 0.017^a	0.164 ± 0.053^b
PT (mm)	0.240 ± 0.130^a	0.150 ± 0.060^a	0.190 ± 0.090^a	0.280 ± 0.060^a
ST (mm)	0.300 ± 0.230^a	0.260 ± 0.100^a	0.540 ± 0.220^a	0.550 ± 0.340^a
LET (mm)	0.063 ± 0.022^a	0.063 ± 0.015^a	0.080 ± 0.018^a	0.101 ± 0.023^a
P/S (%)	1.214 ± 0.611^a	0.670 ± 0.345^a	0.432 ± 0.270^a	0.618 ± 0.208^a
LD (g·cm^-3)	940.4 ± 391.2^ab	1 175.0 ± 385.5^a	514.2 ± 94.2^b	529.5 ± 171.1^ab
LMA (g·cm^-2)	51.36 ± 12.810^a	59.56 ± 14.080^a	44.91 ± 14.750^a	53.49 ± 6.640^a
A_a (μmol·m^-2·s^-1)	10.380 ± 2.310^a	8.400 ± 3.410^a	7.690 ± 1.520^a	7.710 ± 0.750^a
A_m (nmol·g^-1·s^-1)	0.210 ± 0.150^a	0.160 ± 0.110^a	0.190 ± 0.110^a	0.150 ± 0.030^a
R (μmol·m^-2·s^-1)	0.600 ± 0.074^a	0.470 ± 0.074^b	0.500 ± 0.064^ab	0.480 ± 0.046^ab
R_m (nmol·g^-1·s^-1)	0.012 ± 0.003^a	0.008 ± 0.003^a	0.012 ± 0.006^a	0.009 ± 0.001^a