土壤动物是陆地生态系统的重要组成部分，对系统内物质的循环、能量的流动、转化以及土壤结构的形成和改良具有重要作用。
The soil animal is a major component of the terrestrial ecosystem, and plays an important role in material recycling, energy conversion, and soil structure forming and improving.
因而展开陆地生态系统内的碳循环研究意义重大。
Therefore, the research about carbon cycle of terrestrial eco-system is profound.
因而展开陆地生态系统内的碳循环研究意义重大。
Therefore, the research about carbon cycle of terrestrial eco-system is profound.
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