然而，在以白杨等树为主的林分，最初的舞毒蛾爆发很快就被病毒流行病所抑制。
In stands dominated by trees such as aspen, however, incipient gypsy moth outbreaks are quickly suppressed by viral epidemics.
红栎树的林分枝的叶子富含鞣酸，甚至可以为毛毛虫提供远离疾病的安全避难所。
Forest stands of red oaks, with their tannin-rich foliage, may even provide caterpillars with safe havens from disease.
热带雨林分布在非洲、亚洲、美洲中部和南部、澳大利亚以及太平洋岛屿。
Tropical rainforests are in Africa, Asia, Central and South America, Australia, and on the Pacific islands.
对油松天然林的林分结构进行了研究。
Natural forest stand structure of Pinus tabulaeformis was studied.
林分结构是林分功能的基础和表现。
Stand structure is the foundation and manifestation of stand functions.
林分生长规律的研究和建模。
红树林分布于热带和亚热带海岸。
The mangrove flourishes on the seashores of tropics and subtropics.
伍基人的文明则把森林分成七片区域。
Wookiee culture has divided the forests into seven vertical levels.
密度大的林分，生物量和净生产力也大。
The stand of big density has a larger quantity of living beings and net productivity.
我们的国家森林分布很广。
不同的平均值取决于在林分中抽选的林木。
The different averages depend upon which trees in the stand are selected.
红树林分布于118个国家领土的海岸线周边。
Mangrove forests grow along the shorelines of 118 countries and territories.
对林分密度的评价。
本页面已经解释的逻辑和算术的罗林分配细则。
This page has explained the logic and arithmetic of the Loring Allocation Rule.
林分营养元素积累量随林分密度的增加而增加；
The standing nutrient accumulation in whole stand increased with the increase of density.
应用国土卫星图像编制森林分布图是一种新的尝试。
The application of satellite graph in drawing up forest distribution map is a new job.
粮食林分局提醒，不可把维他命丸作为健康饮食的替代物。
The Food Standards Agency has warned that taking pills is no substitute for a healthy diet.
研究结果表明：林分的消光系数与林分叶量大致成反比关系。
The results show that the extinction coefficient is inversely proportional to the leaf weight of the stands.
因此被苔藓所覆盖的非常古老的树木的密度确实对森林的林分水平很重要。
So it's really the density of very large old trees that are draped in moss that is important at a forest stand level.
在林分生长模型建立中，通过分析变量间的显著影响选择变量。
The variables in stand growth model were selected through analyzing the significant influences among the variables.
目前的研究建立了识别工具，以进一步研究森林分化对这种疾病动态的影响。
The present work establishes the identification tools to move forward and ask how forest fragmentation affects such disease dynamics.
通过本文的研究既检验了林窗动态模型又印证了林分密度效应理论。
This not only tested the forest dynamics model but also verified the theory of stand density effect.
林分生长与林地土壤中全n、全k以及有机质等养分的含量显著相关。
It also shows that the growth of plantation is greatly affected by the content of soil nutrients specially total n, total K and soil organic matter.
选择林分密度指数(SDI)作为反映林分中林木之间平均拥挤指标。
Stand density index (SDI) was applied as a quantitative index to measure mean crowd degree between trees.
红树林分布在118个不同国家和区域，但接近75%的区域集中在15个国家。
The forests can be found in 118 different countries and territories, though nearly 75 percent of their area occurs in just 15 countries.
结果表明：点抽样估计林分断面积是无偏的，而估计林分每公顷株数效率不高。
The results indicated that it is unbiased to estimate basal area of stand but inefficient when estimating stems per hectare by point sampling.
同时提出5项林分改造总原则和5项林分改造措施，为公园的植被建设提供理论依据。
At last authors proposes 5 basic stand rebuilding rules and 5 stand rebuilding measures to act as the theoretical basis for the vegetation construction.
同时提出5项林分改造总原则和5项林分改造措施，为公园的植被建设提供理论依据。
At last authors proposes 5 basic stand rebuilding rules and 5 stand rebuilding measures to act as the theoretical basis for the vegetation construction.
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