查询词典 quercus

The forest communities with this species can be divided into six groups, which are Cyclobalanopsis stewardiana-Sinarundinaria nitida community, Cyclobalanopsis stewardiana + Quercus engleriana + Carpinus viminea-Sinarundinaria nitida community, Cyclobalanopsis stewardiana-Euryia brevistyla community, Rhododendron ririei + Cyclobalanopsis multinervis-Illicium simonsii community, Fagus lucida + Cyclobalanopsis multinervis + Cyclobalanopsis stewardiana-Sinarundinaria nitida community and Cyclobalanopsis stewardiana-Camellia cuspidata-Illicium simonsii community respectively.

通过使用双向指示种分析和无偏对应分析两种方法进行研究的结果表明，梵净山树干附生尖叶拟船叶藓在群落水平上的分布与森林群落类型相对应，其所在群落可以分成贵州青冈－箭竹群落、贵州青冈＋巴东栎＋雷公鹅耳枷－箭竹群落、贵州青冈－短柱柃群落、大钟杜鹃＋多脉青冈－野八角群落、亮叶水青冈＋多脉青冈＋贵州青冈－箭竹群落和贵州青冈－尖叶山茶－野八角群落6类树附生苔藓植物群落类型。

The mountains are thickly covered with many varieties of shrubs of which the most common are Quercus Mongolica and Castanea Sequinii.

山地被厚厚的植被覆盖着，植被的种类千变万化，橡树和野生栗子树是也是很常见的，竹子、刺柏属丛木和月桂树相对少些。

There is 61% SSR conservation between Quercus and Castanopsis.

SSR在栲属和栎属之间的保守性为61％。

Other shrubs less common are Bambusa or Bamboo shrub, Juniperus or juniper, Cephalotaxus and a rare Quercus or Laurel Oak.

此外还有珍稀的月桂叶栎

And there are not the existance of seedlings in coppiced shrub of Quercus liaotungensis. So, the shrub type remained two coppiced shoots is the best to recovery the forest vegetation, improve ecological-serve function immediately.

调查过程中没有发现实生苗的存在。2克隆株/丛类型在恢复当地的森林植被、迅速改善区域生态服务功能方面是最好的调控措施。

There were three dominant species, that is Quercus liaotungensis , Corylus yunnanensis and Camphlotropis macrocarpa in the communities with artificial restoration for 9 years,16 years, and natural restoration for 16 years. These three species in these communities showed intense aggregation distribution whose intensity and area increased with the restoration time.

辽东栎、滇榛和杭子梢3个优势种群在人工恢复9年、人工恢复16年和自然恢复16年3群落内呈较强的聚集分布，聚集强度和聚集面积都随恢复时间的延长而增加，人工恢复16年群落具有较高的聚集强度，自然恢复群落具有较高的聚集面积。

Betula, Quercus, Corylus, Alnus, Tsuga and a little amount of Pinus were ia little aggregation in the mountain slope near the marshland This is suggested to be caused by modern people's activity.

菊科。禾本科和莎草科等；在沼泽周围的山坡上，长有桦、栎，榛、桤木、铁杉等和极少量的松，冷杉仅以片状小群聚散居于附近的山坡上，这是近代人为活动干扰的结果。

Species richness and Pielou evenness index were used to measure species diversity. Species richness in polluted area was 32-67, while in control area it was 47-82. Pielou evenness index of tree layer was 0.1161-0.8509, while those of shrub layer and herb layer were 0.1763-0.3249 and 0.0443-0.2601, respectively. The results showed that both species richness and Pielou evenness index were influenced by the point source pollution. Species importance values showed significant differences between polluted area and control area. Dominance of different species had changed, and some species even disappeared under the pressure of pollution, indicating a process of species replacement in plant communities. Such species replacement can provide a scientific basis for species selection for restoration of human-damaged ecosystem. The natural regeneration of Quercus variabilis was insensitive to pollution, while Cupressus funebris was effected seriously.

仅在污染区中出现的物种数量远低于仅在对照区中出现的物种数量；(2)可分出4种基本的群落类型：马尾松林、柏木林、栓皮栎林和马尾松＋栓皮栎林，各群落特定层次的物种丰富度指数以及Pielou均匀度指数在污染区与对照区之间存在显著差异；(3)污染胁迫下，物种在群落中的生态优势度发生了变化，反映了群落中不同物种相互替代的过程，这种物种的替代可为今后受损生态系统人为恢复过程中物种的筛选提供一定的理论参考；(4)对群落中王要物种更新的调查发现：栓皮栎林对污染不敏感；柏木林污染区与对照区幼苗数量及分布格局均有明显差异，污染条件下群落未来演替受到严重干扰。

The diameter-class distribution of trees in mixed Alnus cremastogyne-Cupressus funebris forest,pure Cupressus funebris forest,mixed Pinus massoniana-Quercus forest,mixed Pinus massoniana-Cupressus funebris forest and m...

异常木直径主要分布在1cm~10cm范围内，其中倾斜木和倒伏木超过了异常木总数的50%，枯立木和濒死木中，马尾松林和松柏栎混交林较其它防护林类型少。

Species of Eucalyptus globulus, Quercus acutissima, Cupressus torulosa, Prunu conradinae, Acacia dealbata and Albizia mollis applied for mixed forest, the experiment on 8 artificial mixed forest models was carried out in Daliyuan of Yuxi.

用蓝桉、麻栎、藏柏、山樱桃、圣诞树、山合欢等作混交树种，在玉溪大栗园开展了 8种人工混交林混交模型的试验研究，依据Ii=P1h/H +P2 d/D +P3v/V计算混交模型的选择指标，用I标=I平均+aδn 计算出混交模型的选择标准为

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。