甘肃小苏干湖盐沼湿地盐地风毛菊叶形态-光合生理特征对淹水的响应

李群,赵成章,王继伟,文军,李子琴,马俊逸

Morphological and photosynthetic physiological characteristics of Saussurea salsa in response to flooding in salt marshes of Xiao Sugan Lake, Gansu, China

LI Qun,ZHAO Cheng-Zhang,WANG Ji-Wei,WEN Jun,LI Zi-Qin,MA Jun-Yi

表3 小苏干湖盐沼湿地盐地风毛菊叶性状与光合生理参数特征(平均值±标准误差)

Table 3 Leaf traits characteristics and photosynthetic physiological parameters of Saussurea salsa in salt marshes of Xiao Sugan Lake (mean ± SE)

参数 Parameter	样地 Plot
参数 Parameter	I	II	III
LA (cm²)	7.14 ± 0.36^c	8.34 ± 0.42^b	17.61 ± 0.88^a
LT (mm)	0.15 ± 0.01^a	0.14 ± 0.01^a	0.10 ± 0.01^b
SLA (cm²·g^-1)	8.28 ± 0.41^b	8.82 ± 0.44^b	14.53 ± 0.73^a
LDW (g)	0.86 ± 0.04^a	0.95 ± 0.05^a	1.21 ± 0.06^b
C_a (mg·g^-1)	5.39 ± 0.27^a	3.11 ± 0.16^b	1.26 ± 0.06^c
C_b (mg·g^-1)	1.93 ± 0.10^a	1.15 ± 0.06^b	0.67 ± 0.03^c
C_car (mg·g^-1)	1.39 ± 0.07^a	0.67 ± 0.03^b	0.58 ± 0.03^c
P_n (μmol CO₂·m^-2·s^-1)	4.67 ± 0.23^b	5.17 ± 0.26^a	3.77 ± 0.19^c
T_r (mmol H₂O·m^-2·s^-1)	1.08 ± 0.05^a	1.19 ± 0.06^a	0.97 ± 0.05^b
WUE (μmol CO₂·mmol^-1 H₂O)	4.32 ± 0.22^a	4.34 ± 0.22^a	3.89 ± 0.19^b
Y(II)	0.33 ± 0.02^a	0.33 ± 0.02^a	0.23 ± 0.01^b
Y(NO)	0.38 ± 0.02^a	0.26 ± 0.01^b	0.23 ± 0.01^c
Y(NPQ)	0.29 ± 0.01^c	0.41 ± 0.02^b	0.54 ± 0.03^a
QP	0.73 ± 0.04^a	0.75 ± 0.04^a	0.52 ± 0.03^b
NPQ	0.19 ± 0.01^c	0.40 ± 0.02^b	0.59 ± 0.03^a
ETR (µmol·m^-2·s^-1)	60.02 ± 3.00^a	51.94 ± 2.60^b	49.02 ± 2.45^c