河北小五台山青杨种群中雌雄群体的空间分布及其成因

蒙振思,向卫,苏国岿,李大东,董廷发,彭进友,李晓东,龚小平,梁宁,胥晓

Spatial distribution of male and female Populus cathayana populations and its drivers in Xiaowutai Mountains, Hebei, China

MENG Zhen-Si,XIANG Wei,SU Guo-Kui,LI Da-Dong,DONG Ting-Fa,PENG Jin-You,LI Xiao-Dong,GONG Xiao-Ping,LIANG Ning,XU Xiao

表4 小五台山不同海拔和与河岸距离(河距)区域内的土壤理化性质(平均值±标准误差)

Table 4 The soil properties at different altitudes or distances from the Jinhegou River in Xiaowutai Mountains (mean ± SE)

指标 Indices		含水量 Water content (%)	pH	有机质 Organic matter (%)	总N Total N (g·kg^-1)	总P Total P (g·kg^-1)	总K Total K (g·kg^-1)	有效N Available N (g·kg^-1)	有效P Available P (mg·kg^-1)	有效K Available K (g·kg^-1)
海拔 Altitude (m)	1 300-1 400	31.24 ± 0.27^e	7.20 ± 0.01^a	6.38 ± 0.05^e	4.00 ± 0.06^d	0.94 ± 0.01^d	13.26 ± 0.04^b	0.25 ± 0.01^e	6.94 ± 0.07^e	0.21 ± 0.01^e
	1 400-1 500	48.08 ± 0.42^b	7.21 ± 0.01^a	10.89 ± 0.11^c	5.30 ± 0.05^c	1.03 ± 0.01^b	13.04 ± 0.01^c	0.35 ± 0.01^d	9.92 ± 0.12^c	0.33 ± 0.01^a
	1 500-1 600	42.38 ± 0.15^c	7.03 ± 0.01^c	10.52 ± 0.03^d	5.32 ± 0.02^c	0.94 ± 0.01^d	13.09 ± 0.01^c	0.39 ± 0.01^c	10.96 ± 0.04^b	0.26 ± 0.01^d
	1 600-1 700	40.28 ± 0.23^d	7.02 ± 0.01^c	11.42 ± 0.07^b	5.66 ± 0.04^b	0.96 ± 0.01^c	13.05 ± 0.01^c	0.40 ± 0.01^b	11.74 ± 0.06^a	0.28 ± 0.01^c
	1 700-1 800	52.27 ± 0.49^a	7.13 ± 0.01^b	13.48 ± 0.21^a	6.82 ± 0.11^a	1.10 ± 0.01^a	13.81 ± 0.03^a	0.45 ± 0.01^a	9.19 ± 0.11^d	0.29 ± 0.01^b
	平均值 Mean	43.21	7.08	10.76	5.4	0.97	13.31	0.38	10.7	0.28
河距 Distance from river (m)	0-10	44.38 ± 0.22^a	7.10 ± 0.01^a	10.91 ± 0.06^a	5.49 ± 0.03^a	0.98 ± 0.01^a	13.02 ± 0.01^d	0.37 ± 0.01^c	10.44 ± 0.06^c	0.28 ± 0.01^a
	10-30	42.69 ± 0.26^b	7.07 ± 0.11^b	10.79 ± 0.07^a	5.42 ± 0.03^a	0.97 ± 0.01^b	13.08 ± 0.01^c	0.38 ± 0.01^bc	10.79 ± 0.07^b	0.27 ± 0.01^b
	30-60	41.47 ± 0.27^c	7.11 ± 0.01^a	10.46 ± 0.08^b	5.21 ± 0.04^b	0.96 ± 0.01^b	13.27 ± 0.01^b	0.39 ± 0.01^b	11.15 ± 0.09^a	0.28 ± 0.01^a
	> 60	41.91 ± 0.27^bc	6.91 ± 0.02^c	10.39 ± 0.05^b	5.24 ± 0.04^b	0.92 ± 0.01^c	13.32 ± 0.02^a	0.40 ± 0.01^a	11.02 ± 0.09^ab	0.26 ± 0.01^c