例句 /

Standing crop The total weight of all the living organisms present in an ecosystem at a given moment, usually expressed as dry weight per unit area.

Standing crop The total weight of all the living organisms present in an ecosystem at a given moment, usually expressed as dry weight per unit area.

现存量:某一给定时刻,生态系统中所有活的有机体的总重量。通常的表述是单位区域的干重。