放牧强度对草甸草原植物群落特征及营养品质的影响

张宇,侯路路,闫瑞瑞,辛晓平

Effects of Grazing Intensity on Plant Community Characteristics and Nutrient Quality of Herbage in a Meadow Steppe

ZHANG Yu,HOU LuLu,YAN RuiRui,XIN XiaoPing

表1 不同放牧强度下植物群落数量特征

Table 1 The quantitative characteristics of plant community under different grazing intensities

指标 Index G0.00 G0.23 G0.34 G0.46 G0.69 G0.92 物种数Number of species 39.67±1.45a 45.33±4.18a 45.67±0.88a 44.00±1.53a 45.67±2.19a 46.33±0.88a 群落盖度Community coverage 84.65±0.63a 80.25±1.16ab 80.12±1.80ab 78.01±1.34b 78.23±1.49b 68.84±2.87c 群落高度Community height 22.40±2.41a 17.64±0.24b 17.64±0.97b 13.30±0.64c 10.65±0.81cd 7.13±0.09d 群落密度Community density 605.27±1.94b 661.67±70.25b 541.60±44.69b 729.13±77.41b 1,262.73±247.85a 843.07±16.15b 丰富度指数Margalef index 3.61±0.26b 4.13±0.32ab 4.33±0.05a 4.21±0.04ab 3.84±0.23ab 4.08±0.07ab 多样性指数Shannon-Weiner index 2.51±0.09b 2.66±0.10ab 2.84±0.03a 2.85±0.02a 2.60±0.15ab 2.73±0.05ab 优势度指数Simpson index 0.85±0.01b 0.87±0.02ab 0.91±0.01a 0.91±0.01a 0.88±0.01ab 0.88±0.01ab 均匀度指数Pielou index 0.79±0.01a 0.81±0.02a 0.85±0.01a 0.85±0.01a 0.78±0.04a 0.82±0.02a