武夷山不同海拔植被土壤微生物量的季节动态及主要影响因子

被引:60
作者
何容 [1 ,2 ]
王国兵 [1 ]
汪家社 [3 ]
许波峰 [2 ]
汪科继 [2 ]
方燕鸿 [3 ]
施政 [1 ,4 ]
阮宏华 [1 ]
机构
[1] 南京林业大学森林资源与环境学院江苏省林业生态工程重点实验室
[2] 宁波市江北区农林水利局林特工作总站
[3] 福建省武夷山自然保护区管理局
[4] 加拿大阿尔伯塔大学农业、生命与环境科学学院
关键词
土壤微生物量; 海拔梯度; 季节动态; 土壤有效碳; 土壤湿度;
D O I
10.13292/j.1000-4890.2009.0083
中图分类号
S154 [土壤生物学];
学科分类号
071012 ; 0713 ;
摘要
土壤微生物量的季节变化在陆地生态系统碳循环方面具有重要作用。为阐明中亚热带武夷山不同海拔梯度带土壤微生物量的季节变化规律及其主要影响因子,选择4种不同海拔梯度的植物群落:常绿阔叶林(EBF,500m)、针叶林(CF,1200m)、亚高山矮林(DF,1800m)和高山草甸(AM,2100m)于2005年6月—2006年6月期间进行了实验研究。结果表明:不同海拔梯度带土壤微生物量均具有明显的季节变化且变化趋势一致,均表现为早春最大,夏季最小;不同海拔梯度带土壤微生物量的季节变化与对应月份的土壤湿度、土壤有效碳均呈显著正相关,而与土壤温度、土壤有机碳、土壤全氮、凋落物输入量等因子相关不显著。土壤有效碳含量、土壤湿度是调控武夷山森林土壤微生物量季节变异的重要生态因子。
引用
收藏
页码:394 / 399
页数:6
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