near natural forests 近自然森林
protect natural forests 保护天然林
degraded natural forests 退化天然林
Natural forests resources 天然林森林资源
natural forests conservation 天然林保护
poplar-birch natural forests 天然杨桦林
natural tropical forests 天然的热带雨林
tree species in natural forests 天然林树种
natural forests conservation project 实施天然林保护工程
In this paper, Wave-type time series was used to simulated the breast diameter growth of Tsuga longibracteata natural forests. The results showed the simulating regression precision of model was 98.83%, which was the best of this paper.
本文将起伏型时间序列方法应用于长苞铁杉天然林胸径生长的模拟,结果表明模型的拟合精度达到98.83%,是本论文中回归拟合精度最高的一种方法。
参考来源 - 珍稀濒危植物长苞铁杉生长的气候响应This study concerns the policies about preservation of natural forests in the upper reaches of the Yangtze River.
该项课题是关于长江上游地区天然林保护的政策研究。
参考来源 - 长江上游地区天然林保护的政策研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The physical and mechanical properties of middle cutting wood of Cunninghamia lanceolata are inferior to those from natural forests.
杉木中伐材的物理力学性能不如天然林中伐材。
To mitigate it, natural forests must be conserved.
为减小其影响，天然森林就必须得到保护。
Meanwhile, natural forests continue to be under threat.
同时，自然资源继续受到威胁。
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