刈割、施肥对高寒草甸物种多样性与生态系统功能关系的影响及群落稳定性机制
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王海东, 张璐璐, 朱志红
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Effects of clipping and fertilizing on the relationships between species diversity and ecosystem functioning and mechanisms of community stability in alpine meadow
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WANG Hai-Dong, ZHANG Lu-Lu, ZHU Zhi-Hong
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表5 物种多样性与群落稳定性参数关系的回归分析
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Table 5 Regression analysis for relationships between species diversity and stability parameters of community
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参数 Parameter | 物种类型 Species type | 施肥梯度 Fertility gradient | | 刈割梯度 Clipping gradient | R2 的平均值 Mean of R2 | 不施肥 Unfertilized | | 施肥 Fertilized | 不刈割 Unclipped | | 中度刈割 Stubbled 3 cm | | 重度刈割 Stubbled 1 cm | K | F | R2 | K | F | R2 | K | F | R2 | K | F | R2 | K | F | R2 | 总密度 Summed density | 全部物种Total species | -2 962.36 | 0.6 | 0.04 | | 6 116.24 | 12.5** | 0.44 | | 608.86 | 0.2 | 0.02 | | -5 788.52 | 0.9 | 0.08 | | 1 783.14 | 0.1 | 0.01 | 0.12 | 响应物种Response species | -3 017.15 | 1.8 | 0.10 | | 4 027.39 | 7.9** | 0.33 | | 1 174.81 | 2.2 | 0.18 | | -4 791.46 | 3.2 | 0.24 | | -3 290.57 | 0.9 | 0.09 | 0.19 | 作用物种Effect species | -1 387.72 | 5.2* | 0.25 | | 1 854.35 | 3.2 | 0.17 | | 919.64 | 2.6 | 0.21 | | -1 443.65 | 6.1* | 0.38 | | -333.98 | 0.1 | 0.01 | 0.20 | 共有物种Common species | -3 983.58 | 2 | 0.11 | | 5 920.40 | 11.1** | 0.41 | | 622.84 | 0.2 | 0.02 | | -3 339.45 | 1.0 | 0.09 | | 2 521.8 | 0.2 | 0.02 | 0.13 | 总方差 Summed variance | 全部物种Total species | -25.69 | 7.7** | 0.32 | | -1.36 | 0.2 | 0.01 | | -12.74 | 11.9** | 0.54 | | -31.64 | 6.0* | 0.37 | | -19.37 | 3.8 | 0.27 | 0.30 | 响应物种Response species | -13.79 | 5.2* | 0.25 | | -0.42 | 0 | 0 | | -5.07 | 2.6 | 0.21 | | -15.23 | 5.8* | 0.37 | | -18.19 | 11.3** | 0.53 | 0.27 | 作用物种Effects species | -5.28 | 11.8** | 0.43 | | 0.19 | 0 | 0 | | -2.93 | 1.5 | 0.13 | | -5.06 | 23.1** | 0.70 | | -3.80 | 2.8 | 0.22 | 0.30 | 共有物种Common species | -24.51 | 16.1** | 0.50 | | -1.63 | 0.3 | 0.02 | | -12.61 | 11.7** | 0.54 | | -20.84 | 11.2** | 0.53 | | -19.44 | 3.0 | 0.23 | 0.36 | 同步性 Synchrony | 全部物种Total species | -0.19 | 37.1** | 0.70 | | -0.10 | 48.0** | 0.75 | | -0.10 | 12.7** | 0.56 | | -0.18 | 51.9** | 0.84 | | -0.11 | 6.1* | 0.38 | 0.65 | 响应物种Response species | -0.09 | 12.7** | 0.44 | | -0.08 | 57.5** | 0.78 | | -0.05 | 8.0* | 0.44 | | -0.08 | 26.3** | 0.72 | | -0.09 | 9.7** | 0.49 | 0.57 | 作用物种Effects species | -0.02 | 8.4** | 0.34 | | -0.03 | 7.0** | 0.30 | | -0.04 | 5.5* | 0.35 | | -0.02 | 20.2** | 0.67 | | -0.02 | 1.8 | 0.15 | 0.36 | 共有物种Common species | -0.09 | 6.5* | 0.29 | | -0.10 | 47.6** | 0.75 | | -0.09 | 12.2** | 0.55 | | -0.05 | 2.8 | 0.22 | | -0.12 | 5.8* | 0.37 | 0.44 | 样方数 No. of quadrats | 18 | | 18 | | 12 | | 12 | | 12 | |
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