However, the externality of forest ecological effect makes its value cannot be compensated, which becomes principally limit factor for forest ecological construction.
但由于森林生态效益的外在性，使得其价值补偿无法实现，从而成为我国森林生态建设的根本性制约因素。
The product of forest ecological tourism is different from others in the aspects of the objective, beneficiary, management style and effect.
森林生态旅游产品从目标、受益者、管理方式、效果等方面均不同于其他旅游产品。
The rate of coverage of forest have an evident effect on many environment factors such as soil and water reservation ecological environment improvement.
森林覆被率在保持水土、涵养水源、改善生态环境方面起着很大作用。
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