arbor ['ɑ:bə]

arbor的基本解释

n.

凉亭, 藤架, 树, 心轴

与arbor相关的网络例句 [注：此内容来源于网络，仅供参考]

However remarkable impacts were observed in the plantation in terms of community physiognomy,community structure,species composition,species richness,and biomass accumulation.1 Planting trees made community structure simple.Betula alnoidis plantation had three layers including a dominant arbor layer,a complex and well developed shrub layer and a poorly developed vine layer.The arbor layer contained few species and had a single layer.The mountain rain forest had 4 layers including the dominant arbor layer,shrub layer,grass layer and vine layer.The vine layer was well developed and very rich in species composition,and the arbor layer contained as many as 38 species that could be grouped into 3 layers.2 Sequenced by the important value,main species for the plantation and the nature forest were totally different,and the plantation had one dominant species while the nature forest contained many dominant species.3 Planting trees changed the community physiognomy.

但是人工种植西南桦林对群落的季相外貌、群落的结构、物种组成、物种丰富度以及生物量等方面有较大的影响。1人工造林使得群落结构简化，西南桦人工林的层次结构有3层，以乔木层占优势，并且有种类多而发达的灌木层，同时，藤本植物欠发达，但是乔木层树种单一，明显仅有一层；山地雨林的层次结构有4层，以乔木层占优势，还有灌木层、草本层和藤本植物，藤本植物种类多，十分发达；乔木层树种丰富，可达38种，乔木层还可分为3层。2人工造林较大程度地改变了群落的物种组成，根据重要值的大小排列，人工林和天然林的主要物种组成已经完全不同；并且人工林单优树种明显，而天然林就含有较多的优势树种。3人工造林改变了群落的外貌。

The results indicated that the content of organic matter of the natural meadow and the arbor forest land in the 0-20 cm surface soil grew separately by 36.11% and 32.96%; the nitrogen content of the natural meadow and the arbor forest land was also high, being 66.88 mg/kg and 69.37 mg/kg, respectively; the content of fast-acting potassium in the surface soil was higher than that of meadow ,while the activity of the urea enzyme, alkaline phosphatese and sucrase of the arbor forest land was stronger than that of the other four land utilization modes.

结果表明，天然草地和乔木林地10~20 cm表层土壤有机质增长率均较大，为36.11%和32.96%，二者碱解氮含量也较高，分别为66.88和69.37mg/kg；乔木林地和灌木林地0~20 cm 表层土壤有效磷含量均高于天然草地和人工草地，乔木林地速效钾含量最高。

Meso phanerophytes and micro phanerophytes are main composing plant of arbor synusia in the area.In synusia structure,except for the warm shrubs,frost flora all have arbor synusia,shrub synusia,herbage synusia and lichen synusia.The evergreen broad leaved meso phanerophytessynusia dominates the arbor layer .

在层片结构上，森林植物群落除暖性灌丛外，都具有乔木层层片、灌木层层片、草本层层片和苔藓地被层层片，常绿阔叶中高位芽层片为乔木层主要层片，并多构成群落的建群层片。

与arbor相关的网络解释 [注：此内容来源于网络，仅供参考]

arbor：乔木

枣是落叶乔木(arbor),两个"朿"字一上一下,还象征了枣树高大的外形. 同样由两个"朿"组合而成的"棘"是另一种植物--酸枣,它的果实较枣小,肉薄味酸. 棘是落叶灌木(shrub),枝上多刺. 看它的字形,你大概也能猜到棘树比枣树矮小吧!

arbor：柄轴

变速箱 transmission gear | 柄轴 arbor | 部件 units; assembly parts

arbor：心轴

假定原点 arbitrary origin | 心轴 arbor | 圆弧 arc

arbor：树阴;凉亭;藤架

approximate 近似, 接近, 约计 adj | arbor 树阴;凉亭;藤架 | arc 弧, 弓形, 拱,电弧

Arbor Day：植树节

植树节手抄报资料 植树节(arbor day) 植树节是一些国家以法律形式规定的以宣传森林效益,并动员群众参加义务造林为活动内容的节日. 按时间长短可分为植树日、植树周或植树月,总称植树节. 通过这种活动,激发人们爱林、造林的感情,提高人们对森林功用的认