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Author(s): 
Pages: 1213-1216
Year: Issue:  6
Journal: Journal of Plant Ecology(Chinese Version)

Abstract: 根系是植物重要的功能器官,它不但为植物吸收养分和水分、固定地上部分,而且通过呼吸和周转消耗光合产物并向土壤输入有机质.根据Jackson等(1997)粗略估计,仅直径小于2 mm的细根如果每年周转1次,就要消耗全球陆地生态系统NPP的33%左右,其中一些生态系统消耗的NPP更是超过50%(Vogt et al.,1986).……
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