"Desertification drains an arid or semiarid land of its life-supporting capabilities. It is characterized by a declining groundwater table, salt accumulation in topsoil and water, a decrease in surfac
沙漠化使干旱或半干旱地区维持生命的能力逐渐枯竭。在此过程中,地下水位下降,表土层及水分盐化,地面水减少,侵蚀加剧及乡土植物灭绝。
Terpenoids are more prevalent in some arid or semiarid climates.
萜类在某些干旱或半干旱气候条件下较为普遍。
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