然而，在更北的气候地带，由于实行季节性农耕，回归年变得更加关键。
In more northern climes, however, where seasonal agriculture was practised, the solar year became more crucial.
不同气候地带的各种植物共同生长，并形成局部的生态系统，这一现象极其稀有。
Plants of different climate zones live together and form a local ecosystem, which is extremely special.
从赤道到两极，有规律地排列组合的气候地带的总体叫做水平气候带谱。
Assemblys of certain climate belts on land arranged and composed orderly form climate - belt spectra.
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