sylvogenic soil

例句：

1. 1. The sylvogenicsoil is rich in nutrients that plants needto grow.
   森林土壤富含植物生长所需的养分。
2. 2. The researcher found that thesylvogenic soil had a high carboncontent.
   研究者发现森林土壤的碳含量很高。
3. 3. The sylvogenic soil wasused as fertilizer for the localfarms.
   森林土壤被用作当地农场的肥料。