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agrology
>
abandoned land succession
弃耕地演替
又称撂荒地演替,是指耕地弃耕撂荒后所发生的次生演替。引起这种演替的最彻底的破坏是森林转向农耕地。当耕地被废弃后,最初出现的植物是该地区植物区系中典型的一年生杂草,不久二年生杂草加入,然后是多年生草本,特别是禾本科杂草。以后是阳性或旱生灌木型群落、乔木群落,以致耐阴的乔木群落重新侵占。弃耕地的演替最后阶段并不是都为森林,这要取决于地区的气候和破坏的周期性。