forest expectation value

例句：

1. 1. Forest management is crucial for maintaining biodiversity and ensuring sustainable resource use.
   森林管理对于维护生物多样性和确保可持续资源使用至关重要。
2. 2. The forestry industry contributes significantly to the economy of many countries.
   林业行业对许多国家的经济发展做出了显著贡献。
3. 3. The forestry department is responsible for managing and protecting forest resources.
   林业部门负责管理和保护森林资源。