北方草地及农牧交错区草地植被碳储量及其影响因素
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辛晓平,丁蕾,程伟,朱晓昱,陈宝瑞,刘钟龄,何广礼,青格勒,杨桂霞,唐华俊
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Biomass Carbon Storage and Its Effect Factors in Steppe and Agro-Pastoral Ecotones in Northern China
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XIN XiaoPing,DING Lei,CHENG Wei,ZHU XiaoYu,CHEN BaoRui,LIU ZhongLing,HE GuangLi,QING GeLe,YANG GuiXia,TANG HuaJun
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表4 地上地下生物量与环境因子的一般线性模型分析结果
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Table 4 General linear model (GLM) analysis between above-ground biomass (AGB), below-ground biomass (BGB), and environment factors
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源
Source | df | 地上生物量Above-ground biomass | 地下生物量Below-ground biomass | | SS% | F | Sig. | SS% | F | Sig. | | 校正模型Adjusted model | 5 | 68.81 | 107.242 | 0.000 | 48.20 | 45.223 | 0.000 | | 年均气温MAT | 1 | 5.8 | 45.190 | 0.000 | 6.79 | 31.850 | 0.000 | | 年降水量MAP | 1 | 29.56 | 230.312 | 0.000 | 12.12 | 56.875 | 0.000 | | 放牧强度Livestock capacity | 1 | 1.34 | 10.465 | 0.001 | 0.49 | 2.307 | 0.130 | | 黏粒含量Clay% | 1 | 0.78 | 6.044 | 0.015 | 0.02 | 0.076 | 0.783 | | 砂粒含量Sand% | 1 | 0.05 | 0.371 | 0.543 | 1.91 | 8.978 | 0.003 | | 误差Residuals | 243 | 31.19 | | | 51.80 | | | | 总计R2 | 248 | | | | | | | | 校正的总计Adjusted R2 | 248 | R2 = 0.688（调整Adjusted R2 = 0.682） | R2 = 0.482（调整Adjusted R2 = 0.471） |
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