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A variety of already extinct ferns such as the Lepidodendrales and Sigillaria stand tall and upright above the forests ad numerous ferns of grasses and trees cover the everglade of the marsh.
已经在地球上灭绝的鳞木、封印木等蕨类矗立于森林上层,无数草木蕨类覆盖在沼泽湿地上。
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The nethermost chamber was five cubits broad, and the middle was six cubits broad, and the third was seven cubits broad: for without in the wall of the house he made narrowed rests round about, that the beams should not be fastened in the walls of the house.
6:6 下层宽五肘,中层宽六肘,上层宽七肘。殿外旁屋的梁木搁在殿墙坎上,免得插入殿墙。
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Vegetation zones and 10 vegetation types were classified using TWINSPAN and DCA: Bischofia javanica‐Machilus japonica var. kusanoi type on Ficus‐Machilus zone; Engelhardia roxburghiana‐Castanopsis cuspidata var. carlesii type on Machilus‐Castanopsis zone; Rhododendron formosanum type and Pasania kawakamii‐Machilus thunbergii type on Quercus lower zone; Chamaecyparis obtusa var. formosana—Rhododendron formosanum type, Fagus hayatae type, Symplocos arisanensis‐Illicium anisatum type on Quercus upper zone; Tsuga chinensis var. formosana and Pinus taiwanensis type on Tsuga‐Picea zone; Abies kawakamii type on Abies zone.
经TWINSPAN分析及参考DCA结果,可将植物社会区分为6个植群带10个植群型,分别为榕楠林带的茄冬‐大叶楠型;楠槠林带的黄杞‐长尾尖叶槠型;栎林带下层的台湾杜鹃型、大叶石栎‐猪脚楠型;栎林带上层的台湾扁柏‐台湾杜鹃型、台湾水青冈型及阿里山灰木‐白花八角型;铁杉‐云杉林带的台湾铁杉型、台湾二叶松型;冷杉林带的台湾冷杉型。
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The invention provides a ginkgo pyroligneous liquor and the application thereof in promoting the seed germination of crops and the growth of seedling, and the ginkgo pyroligneous liquor is prepared according to the following steps: after ginkgo wood is split into wood chips, the charring of ginkgo wood is carried out in a retort, the gas generated in the process of charring is condensed, the liquid after condensation is collected and then is placed still for three months, after that, supernatant liquid is separated, thus obtaining the ginkgo pyroligneous liquor.
本发明提供一种银杏木醋液及其在促进作物种子发芽和幼苗生长中的应用,所述银杏木醋液按如下步骤制备而成:将银杏木材劈成木片后,在干馏釜中进行银杏木材的炭化,冷凝炭化过程中产生的气体,收集冷凝后的液体,将收集到的液体静置3个月后分离出上层液体,得到银杏木醋液。
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Two and half years after planting, Swietenia mahagoni and Betula alnoides formed the mixed stand structure, Betula alnoides and Swietenia mahagoni occupied the upper and lower layer respectively.
在幼林前期,两树种已经初步形成西南桦居上层、桃花心木居二层的复层结构。
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The results showed that Liquidamba formosana, Quercus acutissima, and Quercus fabri populations had the dominant positions in the forest community of Purple Mountain Area of Nanjing. During the growth process, the mortality of L. formosana, Q. acutissima, and Q. fabri were higher in low age. After entering into the middle-age stage, the upper space was occupied by oak and L. formosana population all died. The mortality of Q. acutissima and Q. fabri populations were increased with the increasing of diameter class. L. formosana population in the Purple Mountain Area of Nanjing belonged to be the typical growing population and Q. acutissima population was a decreasing population. Q. fabri population belonged to be the growing population on the whole, but the diameter class in middle parts was incomplete and the population was difficult to be renewed. Among the studied quadrate, only one dominant population showed an aggregated distribution and other dominant species showed the random distribution. Either, all the dominant species in all the quadrates presented random distribution.
结果表明,枫香种群、麻栎种群和白栎种群在南京紫金山地区森林群落中占有优势地位;枫香种群、麻栎种群和白栎种群在其生长过程中,在低龄时期,死亡率都较高,进入中龄期后,由于上层空间都被栎木占据,枫香种群全部死亡,而麻栎种群和白栎种群的死亡率则随着径级的增大而增大;南京紫金山地区枫香种群属于典型的增长型种群,麻栎种群属于衰退型种群,白栎种群总体上属于增长型群落,但中间径级不完整,种群更新较为困难;在所研究的每一个样方中,一般只有一个优势物种呈聚集分布,而其他优势物种呈随机分布,或样方中所有优势物种都呈随机分布。
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Larches of different ages have different net photosynthetic rate: the photosynthetic capacity of the young ones are bigger than that of the old ones; the stand density do not affect the net photosynthetic rate obviously; as far as the different stand classes are concerned, the diurnal changes of net photosynthetic rate is closely related to the photosynthetic active radiation. For the different layers of the crowns, there are greater ecological factors (illumination intensity, temperature, humidity etc.) on the upper layers than on the lower layers: the CO2 concentration of the lower layers is greater than that of the upper layers, which is indeed an exception; the net photosynthetic rate on the upper layers of the crown is generally greater than that of the lower layers. It showed that the CO2 concentration is not a main factor in the natural changing range of the CO2 concentration. Different directions of the crown have different photosynthetic active radiation, which is generally like exposed to the sun﹥North﹥in the shade of crown. However, the changes of net photosynthetic rate are not quite the same, which is North﹥exposed to the sun﹥in the shade of crown.
不同年龄的兴安落叶松净光合速率不同,年龄小的个体光合能力高于年龄大的个体;群团密度与净光合速率没有显著的相关关系;而对不同分级木,净光合速率日进程变化规律与光合有效辐射有着密切的联系;林内树冠不同层次各生态因子有上层大于下层的趋势,而CO2浓度在下层的含量高于上层,净光合速率上层普遍大于下层,说明在林内自然CO2浓度变幅内,CO2浓度不是主要因子;兴安落叶松树冠不同方向的光合有效辐射不同,一般向阳﹥北向﹥背阴,而净光合速率变化有北向﹥向阳﹥背阴的趋势。
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Light condition, direct sunlight, thickness of soil humus, neighboring trees, upper canopy species , herbs and shrubs, on the growth of the young trees of Pinus koraiensis were investigated taking 4 closest neighboring trees as the structural unit of the individual growth environment.
本研究以红松幼树及其周围最近4株相邻木组成的小环境结构单元为研究对象,研究了光照条件、土壤腐殖质层厚度、相邻木、直射光、上层树种、草本和灌木等6个环境因子对红松幼树生长的影响。
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Clock Tower ride the Northern Dynasties South, 17.45 meters high, divided into two tiers, the lower deck of red sandstone masonry and wood frame canopy to the upper beam structure, Zhong Yan Xie Din, set around a wooden railing, according to the public towards the field.
钟楼坐北朝南,高17.45米,分作两层,下层用红砂岩砌筑,上层为木构架檐梁式结构,重檐歇顶,四周设置了木栏杆,供游人依栏远眺。
- 更多网络解释与上层木相关的网络解释 [注:此内容来源于网络,仅供参考]
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Overworked:瘁
overwood /上层木/上木/ | overworked /瘁/ | overwrap /外包装/
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overwood:上层木 上木
overwingsdiameter 翼展 | overwood 上层木 上木 | overwork 过劳 劳累过度
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overwood;upper crop:上层木
强势木生产力 ;生产力指数;地位指数 productivity index | 上层木 overwood;upper crop | 先驱树种 pioneer species;pioneer
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top yeast;surface yeast:上层酵母
主枝先端接木;高接(接木) top working;top-grafting | 上层酵母 top yeast;surface yeast | 整形观赏树木 topiary