林分密度对马尾松林下土壤养分及酶活性的影响

被引:58
作者
赵汝东 [1 ,2 ]
樊剑波 [1 ]
何园球 [1 ]
宋春丽 [1 ,2 ]
屠人凤 [1 ,2 ]
谭炳昌 [1 ,2 ]
机构
[1] 中国科学院南京土壤研究所
[2] 中国科学院研究生院
关键词
马尾松; 林分密度; 土壤养分; 土壤酶活性;
D O I
10.13758/j.cnki.tr.2012.02.015
中图分类号
S714.8 [森林土壤肥力、土壤肥料];
学科分类号
090709 [森林培育学];
摘要
以退化马尾松林下土壤为对象,通过调查我国红壤丘陵区典型林分密度的马尾松人工林,研究林分密度对土壤养分和土壤酶活性的影响。3种林分密度中,1560株/hm2左右中等林分密度的马尾松土壤有机质、全氮、全钾、速效钾、全磷、交换性钙和交换性镁等较高,但土壤酸化也较严重;同时,1560株/hm2左右马尾松林的土壤转化酶活性、脲酶活性和多酚氧化酶活性均较高,但过氧化氢酶活性表现最低;林分密度对马尾松土壤酸性磷酸酶活性影响不明显。因此,适宜林分密度的马尾松人工林一定程度上可改善该区林下土壤肥力及生化强度。
引用
收藏
页码:297 / 301
页数:5
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