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1·Above the tree line there is a zone that is generally called alpine tundra.

林木线上方有一个区域，通常被称为高山苔原。

2·If you keep going up, you'll emerge on the alpine tundra.

如果你继续下去了，你会出现在高山苔原。

3·Bryoflora of the alpine tundra of Changbai Mountain and its floristic relationship to the...

长白山高山冻原苔藓植物区系及其与北极冻原苔藓植物区系的关系。

4·The time of turning yellow related to heat condition both the Cold temperate perhumid cold conifer forest and the Frigid perhumid rain tundra alpine meadow.

而在寒冷潮湿多雨冻原、高山草甸类草场，热量条件是影响牧草返青期的主要因子。