放牧强度和地形对内蒙古典型草原物种多度分布的影响

李文怀, 郑淑霞, 白永飞

Effects of grazing intensity and topography on species abundance distribution in a typical steppe of Inner Mongolia

LI Wen-Huai, ZHENG Shu-Xia, BAI Yong-Fei

表4 不同放牧强度下全部物种、常见种和稀有种的丰富度和多度响应值比较(平均值±标准误差, n = 3)

Table 4 Comparisons of the response values in species richness and abundance among different stocking rates for entire species, common species, and rare species (mean ± SE, n = 3)

地形 Topography	载畜率 Stocking rate (sheep·hm^-2)	全部物种 Entire species		常见种 Common species			稀有种 Rare species
地形 Topography	载畜率 Stocking rate (sheep·hm^-2)	丰富度 Richness	多度 Abundance	丰富度 Richness		多度 Abundance	丰富度 Richness	多度 Abundance
平地 Flat	0	1.00 ± 0.09^ab	1.00 ± 0.25^ab		1.00 ± 0^a	1.00 ± 0.25^ab	1.00 ± 0.12^ab	1.00 ± 0.15^b
	1.5	1.37 ± 0.30^a	1.61 ± 0.52^ab		1.00 ± 0^a	1.59 ± 0.52^ab	1.49 ± 0.40^a	3.05 ± 0.29^a
	3.0	0.92 ± 0.30^abc	1.76 ± 0.63^a		1.00 ± 0^a	1.78 ± 0.63^a	0.89 ± 0.40^abc	0.58 ± 0.33^b
	4.5	0.41 ± 0.05^cd	0.62 ± 0.05^b		0.94 ± 0.06^a	0.61 ± 0.05^b	0.25 ± 0.06^cd	1.24 ± 1.17^b
	6.0	0.63 ± 0.05^bcd	0.89 ± 0.10^ab		0.94 ± 0.06^a	0.89 ± 0.10^ab	0.52 ± 0.05^bcd	0.84 ± 0.62^b
	7.5	0.35 ± 0.03^d	0.67 ± 0.04^ab		1.00 ± 0^a	0.67 ± 0.04^ab	0.14 ± 0.03^d	0.11 ± 0.06^b
	9.0	0.69 ± 0.05^bcd	0.84 ± 0.06^ab		1.00 ± 0^a	0.85 ± 0.06^ab	0.59 ± 0.06^bcd	0.31 ± 0.07^b
坡地 Slope	0	1.00 ± 0.05^a	1.00 ± 0.03^ab		1.00 ± 0^a	1.00 ± 0.03^ab	1.00 ± 0.08^a	1.00 ± 0.11^a
	1.5	0.69 ± 0.09^b	1.19 ± 0.30^a		1.00 ± 0^a	1.20 ± 0.30^a	0.50 ± 0.15^b	0.24 ± 0.14^bc
	3.0	0.55 ± 0.03^bc	0.87 ± 0.05^ab		1.00 ± 0^a	0.88 ± 0.05^ab	0.26 ± 0.05^bc	0.17 ± 0.10^bc
	4.5	0.62 ± 0.07^b	0.72 ± 0.11^b		1.00 ± 0^a	0.72 ± 0.11^b	0.38 ± 0.12^bc	0.07 ± 0.01^bc
	6.0	0.63 ± 0.02^b	0.80 ± 0.13^ab		0.90 ± 0.10^ab	0.80 ± 0.13^ab	0.47 ± 0.08^b	0.38 ± 0.16^b
	7.5	0.38 ± 0.03^c	0.70 ± 0.02^b		0.86 ± 0^bc	0.70 ± 0.02^b	0.09 ± 0.05^c	0.01 ± 0.01^c
	9.0	0.42 ± 0.04^c	0.76 ± 0.10^ab		0.76 ± 0.05^c	0.76 ± 0.10^ab	0.21 ± 0.08^bc	0.08 ± 0.04^bc