内蒙古温带草地土壤有机碳组分含量和分解速率的空间格局及其影响因素

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陈颖洁¹^,², 房凯²^,³^,^*(

), 秦书琪², 郭彦军¹^,⁴, 杨元合²^,⁵

Spatial patterns and determinants of soil organic carbon component contents and decomposition rate in temperate grasslands of Nei Mongol, China

CHEN Ying-Jie¹^,², FANG Kai²^,³^,^*(

), QIN Shu-Qi², GUO Yan-Jun¹^,⁴, YANG Yuan-He²^,⁵

图2. 内蒙古温带草地有机碳(OC)标准化碳分解速率的空间格局(A)及不同草地类型间土壤碳分解速率的差异(B)。植被类型图基于1:1 000 000中国植被图(中国科学院中国植被图编辑委员会, 2001)绘制。箱线图中的线、底边和顶边以及误差棒分别表示一组数据的中位值、25百分位数和75百分位数以及标准差。不同小写字母表示不同草地类型存在显著差异(p < 0.05)。

Fig. 2. Spatial distribution of soil carbon (C) decomposition rate standardized by soil organic C (OC) in temperate grasslands of Nei Mongol (A), and comparison of soil C decomposition rate among different grassland types (B). The vegetation map was obtained from China’s vegetation atlas with a scale of 1:1 000 000 (The Editorial Committee of Vegetation Map of China, Chinese Academy of Sciences, 2001). The lines, lower and upper boundaries, and bars in the boxes show median values, 25th and 75th percentiles, and standard deviations of all data, respectively. Different lowercase letters denote significant differences among different grassland types (p < 0.05). DS, desert steppe; MS, meadow steppe; TS, typical steppe.