Soil, atmosphere and plant are the important carbon pools in forest ecosystem, among which, plant is the main medium linking the carbon exchange between soil and atmosphere.

土壤、大气、植物是森林生态系统的重要碳库，植物是大气和土壤交换碳元素的重要介质。

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"Based on all available facts, Johnson Controls disagrees with any interpretation linking our plant's operation to elevated lead exposure, " the firm said in a statement.

WSJ: Shanghai Halts Johnson Controls Lead Processing