查询词典 sapling forest

Whereas, the orders in variation of total NPP in various ecosystems were the following: crop, grass, deciduous forest and evergreen needleleaf forest.

而影响全国陆地生态系统年际NPP总量变化最大的是耕地、草地以及落叶阔叶林与常绿针叶林。

Forest structure,individual quality,tree density and crown density,and structure and function of brush forest are used to construct a criterion to the LQBF.

判定低质低效林的依据是林分的结构、林木个体质量、密度和郁闭度、灌木林结构和功能。

Low quality and benefit Forest ; criterion ; ecological benefit ; crown density ; Secondary forest

低质低效林；判定标准；生态效益；郁闭度；次生林

Besides, investigations on plant species diversity、forest crown density、incidence extent、gradient and exposure of 3 forest communities were taken,while dilution heat method and semi-micro Macro Kjeldahl method were used to determine the content of organic matter and nitrogen in soil.

调查了3个油松林群落的物种多样性、林分郁闭度、油松毛虫发生程度、坡度及坡向。

The harm extent of Dendrolimus tabulaeformis and D. spectabilis were analyzed by fourteen forest factors, from which four significant ones were selected: crown density, altitude, average diameter at breast height and MLP. MLP is a new parameter suggested in this paper. It is better than diversity index to the harm extent, and it can indicate some information on not only the under story plant species diversity but the forest environment. Using the four key factors a multiphase linear regression model was made for risk analysis of the harm extent of pine caterpillar.

该文首次提出了林下植物喜湿度参数MLP(Moisture-Loving Parameter)，并用包括MLP在内的14个林分因子与松毛虫危害程度进行逐步回归分析，从中筛选出主林层郁闭度、海拔高度、油松平均胸径和林下植物喜湿度参数4个关键因子，与松毛虫危害程度之间均呈显著的负相关关系，并进一步用这4个因子与松毛虫危害程度建立多元线性回归模型，该模型可对松毛虫危害程度进行风险评估。

We classified the forest fuel and studied the fuel spatial distribution based on forest inventory and sample plots. Vertical and horizontal distribution of fuel is calculated from sample plots and tree biomass equation. Based on fuel distribution, wind simulation and DEM, fire intensity and effective shaded fuelbreak width are calculated under the condition of crown fire occurrence.

根据历史气象数据确定当地平均最大风速平均值为3.6m/s，平均最大风速的最大值为14m/s，在此情景下，结合DEM数据和可燃物数据对研究区域的林火强度进行计算，并对防火林带的有效参数进行确定。

Forest The deer escaped to the deep forest.

那鹿逃入了丛林深处。

The rain forest contains many varieties of these strangler fig trees, and their fruit is a critical food source for numerous rain forest dwellers, including monkeys, civets, butterflies, and ants.

热带雨林包含许多种类的这些扼杀者无花果树，和它们的果实是一种应急食物来源对于许多热带雨林居民，包括猴子，麝猫，蝴蝶，和蚂蚁。

The rain forest contains many varieties of these strangler fig trees, and their fruit is a critical food source for numerous rain forest dwellers, including monkeys, civets, butterflies, and ants.

热带雨林里的无花果榕树品种繁多，这些树的果实对于大多数雨林&居民&来说是很重要的食物来源，这些&居民&包括：猴子、麝猫、蝴蝶和蚂蚁。

The Ocean overlord Dragon fish was attracted by the dense crinoids forest,they Feeding children in the crinoids forest.

茂密的海百合的森林将海洋霸主鱼龙吸引过来，他们在海百合&森林&里生儿育女。

The role of the environment is very important.

的作用，环境是非常重要的。

At that time, the High Court of England and Wales Court of Queen's Bench president of William Murray, Lord Mansfield in June 22, 1772 ruling:"No matter then there is the inconvenience, but there must be a decision, I can not say that this case under the law in England are permitted or authorized; are so black should be released."

当时的英格兰及威尔士高等法院王座法庭院长William Murray， Lord Mansfield于1772年6月22日宣判：「无论有那麽不便，但总要有个决定，我不能说这件案在英格兰法律之下是准许或认可；所以黑人是应该被释放。