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世界上最高的树世界上生长着不少高大的树木,例如美国加利福尼亚州和內华达山脉的“世界爷”(巨杉),树高100米,树龄4000年;我国台灣阿里山的“神木”(紅檜),树高57米,树龄3000年。不过,这些树再长高一些,也比不上原产澳洲的桉树(王桉和杏仁桉),树高可达150米。1880年,有人在該地(維多利亚)实測一株王桉,树高114米,树圍34米。当地居民甚至把它們的树干凿空作为住屋和馬厩。桉树从种子发芽之日起,只要条件适宜,生长从无休止。某几种幼年的桉树,每年胸高(即1.3米处)直徑可以增加二厘米或更多,比其它的速生树种如楊树、柳树、臭椿、泡桐等都增长得快。桉树在栽植的头一年,就能长到3—4米高,
The world’s tallest tree has many tall trees in the world. For example, “The World God” (Jubilan) in the California and Sierra Nevada Mountains, the tree is 100 meters high and is 4,000 years old; “(Red Dragonfly), the tree is 57 meters high and the tree is 3,000 years old.” However, these trees are taller than they are, and they are not comparable to the native Australian eucalyptus trees (Wang and Almondia), which can reach a height of 150 meters. In 1880, someone observed a king pelican in the area (Victoria). The height of the tree was 114 meters and the circumference of the tree was 34 meters. Local residents even cut their trunks into homes and stables. From the day of seed germination, eucalyptus begins to grow without interruption as long as conditions are right. In some young eucalyptus trees, the annual chest height (1.3 meters) can increase by two centimeters or more, which is faster than other fast-growing species such as poplar, willow, skunk, and paulownia. In the first year of planting, eucalyptus will grow to 3-4 meters in height.