betula platyphylla 中文意思是什麼

Anatomical study on morphogenesis in vitro culture from betula platyphylla

白樺組培離體再生的解剖學研究

In different phases of development, vegetation systems in this region have changed from pioneer herbage species initially recovering in abandoned cropping lands ( bothriochloa ischemum, artenmisia giradii and stipa bungeana, artenmisia sacrorum, spodiopogen sibiricus and sophora flavecens, themeda japonica, and arundinella anomala ) to secondary shrubs ( hippophae rhamnoides, sophora viciifdia, and ostryopsis davidiana ), early forest community ( populus davidiana, betula platyphylla and platycladus orientalis with arbors or shrub assembling ), and finally liaotungesis community as the mature forest. in this study, soil profiles ( 0 - 5, 5 - 15, 15 - 25, 25 - 35, 35 - 50 cm soil layers ) were selected from typical vegetation systems representing for vegetation successions in the region

該區北部目前還保存有空間上完整的植被正向演替系列，即棄耕地先鋒群落草本群落（白羊草bothriochloaischemum 、茭蒿artenmisiagiradii +長茅草stipabungeana 、鐵桿蒿artenmisiasacrorum 、大油芒spodiopogensibiricus +苦參sophoraflavecens 、黃菅草themedajaponica或野古草arundinellaanomala ）灌叢群落（沙棘hippophaerhamnoides 、狼牙刺sophoraviciifdia 、虎榛子ostryopsisdavidiana ）早期森林群落（喬灌群聚、山楊populusdavidiana 、白樺betulaplatyphylla 、側柏platycladusorientalis 、 ）遼東櫟群落（ quercusliaotungensis ） 。

This paper investigated the fungus flora of 8 main tree species, which are pinus tabulaeformis, larix principis - rupprechtii mayr, betula platyphylla suk, ostryopsis davidiana decne, ulmus pumila l., quercus liaotungensis koidz, populus davidiana dode, prunus ansu, in daqingshan mountain

大青山地區環境惡劣、植被破壞嚴重，利用菌根生物技術實現植被恢復是一個重要方向。本文對大青山8個主要樹種，即：油松、落葉松、白樺、虎榛子、榆樹、遼東櫟、山杏菌根資源及生態進行了調查。

Antitumor activity on ascites tumor and effect on macrophage of extraction from betula platyphylla

白樺樹皮提取物的抗腹水型腫瘤作用及對腹腔巨噬細胞功能的影響

Temporal characteristics of developmental cycles of female and male flowers in betula platyphylla in northeastern china

白樺雌雄花發育周期的時序特徵

Study on cohort structure of betula platyphylla population in virgin forest, northern region of daxing ' anling mountains, china

大興安嶺北部地區原始林白樺種群的世代結構

Life history characteristics and spatial distribution of the betula platyphylla population in the dongling mountain region, beijing, china

北京東靈山地區白樺種群生活史特徵與空間分佈格局