欧亚大陆草原地上生物量的空间格局及其与环境因子的关系
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焦翠翠, 于贵瑞, 何念鹏, 马安娜, 葛剑平, 胡中民
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The spatial pattern of grassland aboveground biomass and its environmental controls in the Eurasian steppe
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Cuicui JIAO, Guirui YU, Nianpeng HE, Anna MA, Jianping GE, Zhongmin HU
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| 表2 环境因素对欧亚大陆草原地上生物量空间格局的综合影响 |
| Tab. 2 Summary of the results obtained from stepwise multiple regressions between AGB and environmental variables, showing the integrative effects of environmental factors on the spatial variation of AGB in the Eurasian steppe |
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| 影响因素 | 自由度 | 解释率(%) | F值 | | 欧亚大陆草原 | MAP | 1 | 24.91*** | 55.28 | | MAT | 1 | 3.94** | 10.96 | | Gravel | 1 | 3.98** | 11.09 | | MAR | 1 | 2.09* | 5.83 | | MAP×Gravel | 1 | 0.88 | 2.44 | | Residual | 193 | 64.21 | | | 黑海-哈萨克斯坦草原亚区 | MAP | 1 | 29.65*** | 13.67 | | SOC | 1 | 12.60* | 5.81 | | MAP×SOC | 1 | 5.72 | 2.64 | | Residual | 24 | 52.04 | | | 蒙古高原草原亚区 | MAP | 1 | 35.62*** | 49.39 | | MAP×MAT | 1 | 4.49* | 6.23 | | MAP×MAR | 1 | 2.73. | 3.78 | | MAT | 1 | 0.20 | 0.27 | | Residual | 79 | 56.96 | | | 青藏高原草原亚区 | MAP | 1 | 27.93*** | 36.68 | | pH | 1 | 7.18** | 9.43 | | MAP×MAR | 1 | 3.16 | 4.16 | | MAR | 1 | 0.23 | 0.30 | | MAT | 1 | 1.33 | 1.74 | | Resiudal | 79 | 60.16 | |
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