晋西北丘陵风沙区柠条锦鸡儿叶片与土壤生态化学计量特征

刘婧, 缑倩倩, 王国华, 赵峰侠

Leaf and soil ecological stoichiometry of Caragana korshinskii in windy and sandy hilly region of northwest Shanxi, China

LIU Jing, GOU Qian-Qian, WANG Guo-Hua, ZHAO Feng-Xia

表2 晋西北丘陵风沙区不同林龄人工柠条锦鸡儿叶片光合色素含量特征(平均值±标准误)

Table 2 Characteristics of photosynthetic pigments content in leaves of Caragana korshinskii at different ages in the windy and sandy hilly region of northwest Shanxi (mean ± SE)

林龄 Forest age (a)	叶绿素a Chlorophyll a (mg·kg^-1)	叶绿素b Chlorophyll b (mg·kg^-1)	类胡萝卜素 Carotenoids (mg·kg^-1)	总叶绿素 Total chlorophyll (mg·kg^-1)
6	1.74 ± 0.041^a	0.58 ± 0.017^a	0.37 ± 0.005^a	2.32 ± 0.058^a
12	1.45 ± 0.051^ab	0.52 ± 0.029^ab	0.27 ± 0.007^b	1.95 ± 0.075^ab
18	1.28 ± 0.051^b	0.50 ± 0.026^b	0.23 ± 0.009^b	1.80 ± 0.076^ab
40	1.18 ± 0.063^b	0.47 ± 0.032^b	0.22 ± 0.007^b	1.65 ± 0.093^b
50	1.02 ± 0.049^b	0.39 ± 0.022^b	0.23 ± 0.008^b	1.40 ± 0.070^b