Improving forest resources quality is the critical factor of solving supply of forest resources and the problem of ecological environment deterioration.
森林资源质量的提高是解决我国林木资源供给不足、生态环境恶化的决定性因素。
Through case study, find the bronze drum can use in the locality for a long time, there is connection that can't be isolated with the local unique ecological environment and culture factor.
通过个案研究，发现铜鼓在当地之所以能够长期使用，与当地独特的生态环境和文化因素有着紧密的联系。
Ecological environment has converted from the essential factor of human existing from the single meaning to an economical element of social significance.
生态环境已经从单纯意义上的人类生存要素转变为社会意义的经济要素。
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