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Podocarpaceae A family of evergreen conifers. It includes one of the oldest living organisms, a huon pine, Dacrydium franklinii, from Tasmania, possibly 10 000 years old .
罗汉松;常绿松柏类植物的一个科,包括现存的、最古老的生物塔斯马尼亚洲均松,位于塔斯马尼亚,约10000岁。
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The result of factor analysis can provide the changes of relative precipitation and temperature variations. In trace elements, Cu, As, Zn, Pb and Ni were apparently enrichmented in soil layers and are sensitive to climatic changes. Carbon isotope is more sensitive to climatic changes than that of oxygen isotope in loess stratigraphy. The heavy mineral are varified in the loess stratigraphy, but their content differences between loess and palaeosol is little. Though the palynologic analyses results reveal that pollens and spores are fewer in the loess stratigraphy, they differ greatly in loess layer and palaeosol layer not only in species but also in types, i. e., the pollens and spores indicating warm and moist climate, such as Lles, Podocarpus, Polopydium, Pteris grerilliana Wall, Pterocarya and Juglans appear in palaeosol layers, while those indicating cold and dry climate such as Ephedra, Artemisia, Chinopodiaceae, Picea and Abies exist mainly in loess layers. The pollen content of broad-leaved tree mainly consisting of Pterocarya is up to 60% in palaeosol 〓, while the content of Ephedra is more than 50% in 〓 loess layer, showing that the environment differed greatly when 〓 and 〓 were formed.
当然,常量元素氧化物的组合因子分析结果可提供相对降水与相对温度在剖面的变化,因而来反映气候状况更为理想;微量元素中Cu、As、Zn、Pb与Ni在成土过程中富集明显,亦较好地反映了气候变化;稳定同位素中的碳同位素比氧同位素更能敏感记录气候的变化;研究区黄土地层中重矿物种类较多,但黄土层与古土壤层中含量差异不大;孢粉分析结果揭示,尽管研究区黄土层中孢粉总量相对较为贫乏,但黄土层与古土壤层中孢粉种属相差较大:在古土壤层内出现了指示相对暖湿环境的冬青属、罗汉松属、水龙骨属、林下凤尾蕨、枫杨、胡桃等植物孢粉,而黄土层中麻黄、藜科、蒿属及冷杉、云杉含量较高。
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About the hardiest Podocarpaceae species; prostrate spreading shrub similar to mountain rimu; mountains of southern Chile.
最硬的属于罗汉松科的俯卧散布的灌木,类似山区芮木泪柏;分布在智利南部山区。
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Podocarpus macrophyllus:罗汉松
罗汉松(Podocarpus macrophyllus)是产于我国长江流域以南地区罗汉松科中较常见的种类,多栽培供观赏. 罗汉松神奇有趣的是,在夏季雌树的叶腋内,会结出一个个小罗汉似的种子,种子上面的"光头"部分是一枚侧生胚珠,下面的种托好似罗汉的身体,
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Podocarpus macrophyllus:汉松
罗汉松(Podocarpus macrophyllus)是产于我国长江流域以南地区罗汉松科中较常见的种类,多栽培供观赏. 罗汉松神奇有趣的是,在夏季雌树的叶腋内,会结出一个个小罗汉似的种子,种子上面的"光头"部分是一枚侧生胚珠,下面的种托好似罗汉的身体,
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Dacrydium pierrei:陆均松
裸子植物罗汉松科的鸡毛松(Podocarpus imbricanthus)和陆均松(Dacrydium pierrei)分别成为低山雨林和中山雨林的标志种. 该林下多棕榈科植物,木质藤本和附生植物常见. 在台湾南部的高雄、恒春一带,在海拔500m以下的砖红壤上,
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Podocarpaceae:罗汉松科
鸡毛松拉丁名: Podocarpus imbricatus Pine, 罗汉松科(Podocarpaceae)罗汉松属 (Podocarpus). 别 名:爪哇罗汉松、岭南罗汉松、爪哇松、异叶罗汉松. 但仅采取保护措施是远远不够的,需利用全新的植物克隆技术来扩大种群,尽力挽救这些已面临绝迹的珍稀植物.
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Podocarpaceae:罗汉松科 (竹柏科)
为罗汉松科(竹柏科)(Podocarpaceae) 罗汉松属植物. 罗汉松(Podocarp)化石证实这些巨大的树木生长在三叠纪晚期到白垩纪时期,它们通常是树林中最高的植物,树冠伸展突出於其他的树丛之上,以便得到最多的阳光.
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Sabina:圆柏属
裸子植物的胚珠虽然在传粉时是裸露的,但在发育成种子的过程中,罗汉松科、三尖杉科、红豆杉科、买麻藤科、麻黄科及柏科的圆柏属(Sabina)和刺柏属(Juniperus)等类群的种子在成熟时常常为肉质的假种皮或种鳞等组织所包被.因此,