Given this unequal resource distribution, highland Incas needed access to the products of lower, warmer climatic zones in order to enlarge the variety and quantity of their foodstuffs.

考虑到资源分配的不平等，高原印加人需要获得海拔较低、较温暖的区域的产品，以扩大食物的种类和数量。

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It is situated in the center of Asia and it has some climatic zones: from forest-tundra to steppe.

他位于亚洲的中部，它也有很多种的气候区域：西伯利亚大草原的森林苔原。

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An interesting fact that Tyva is situated in different climatic zones: taiga in the north and Alpine grasslands in the west.

一个有趣的事实：图瓦位于一个不同气候的地区：针叶林在北部和阿尔卑斯山的草原。

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"The upper ecosystem from the upper vegetation limit to the glacier is essentially the same over all climatic zones from the North Pole to the Antarctic, " says Mr Messerli.

UNESCO: 83e