For the sake of ecological benefit offorestry resources, the external economyofforestry production must be adjusted by adopting state-oriented contract or agent-oriented contract system.
必须对森林资源的生态效益实施国家定向合同购买或代理（社会）合同购买的办法来校正林业生产的外部性。
2
Southeast Asia's economy also relies heavily on agriculture and forestry, both of which may be affected significantly by changing weather patterns.
东南亚经济还严重依赖农业和林业，二者都容易受到气候变化的极大影响。
3
Forestry is an important part of the national economy. Statistics and accounting are the basis of the national income accounting.