长期封育演替下典型草原植物群落生产力与多样性关系

张义, 程杰, 苏纪帅, 程积民

Diversity-productivity relationship of plant communities in typical grassland during the long- term grazing exclusion succession

ZHANG Yi, CHENG Jie, SU Ji-Shuai, CHENG Ji-Min

表1 封育草地群落植物地上生产力与物种多样性(平均值±标准误)

Table 1 Aboveground net primary productivity and species diversity of grassland communities after grazing exclusion (mean ± SE)

封育年限 GED (a)	纬度 Latitude (° N)	经度 Longitude (° E)	海拔 Altitude (m)	地上生产力 ANPP (g·m^-2)	凋落物生物量 Litter biomass (g·m^-2)	丰富度 Richness	Shannon- Wiener 指数 H′	Pielou均匀度指数 E	Simpson优势度指数 D
0	36.22	106.38	1 942	115.60 ± 13.13^c	30.78 ± 8.02^c	13.33 ± 0.74^a	2.21 ± 0.05^ab	0.86 ± 0.01^a	0.85 ± 0.01^a
9	36.22	106.39	1 928	165.14 ± 10.10^b	61.66 ± 7.38^bc	12.64 ± 0.62^a	2.17 ± 0.07^ab	0.86 ± 0.01^a	0.85 ± 0.01^a
26	36.20	106.41	1 885	253.38 ± 15.32^a	160.06 ± 34.83^b	14.17 ± 0.67^a	2.30 ± 0.05^a	0.87 ± 0.01^a	0.87 ± 0.01^a
34	36.24	106.38	2 098	261.79 ± 19.87^a	346.74 ± 57.52^a	14.42 ± 0.96^a	2.11 ± 0.06^b	0.80 ± 0.01^b	0.81 ± 0.01^b