摘要
通过对油松林、锐齿栎林、草丛等不同植被类型下土壤物理性质研究表明 :土壤形成发育过程中 ,森林群落改善土壤物理性质的作用明显大于草本群落 ;阔叶林对土壤物理性质的改善作用强于针叶林。在 0～ 1 0 cm土层深度 ,>5 mm粒级的水稳性团聚体含量的增量锐齿栎林为 2 7.8% ,油松林为 1 4.0 % ,草丛为 5 .7% ;1～ 2 mm粒级的土壤水稳性团聚体含量的增量锐齿栎林为 6.0 % ,油松林为 1 1 .1 % ,草丛 8.6%。森林植被增加直径 >5 mm和 2～ 5
Soil physical properties in different types of vegetation such as Chinese pine forest, sharptooth oak forest and meadow were studied. The results are as follows: In the process of soil forming and development, effect of the forest communities on improving soil physical properties was more significant than that of meadow community, and that of the broadleaf forest was stronger than the coniferous forest. In 0～10 cm depth of soil, the increments of >5 mm soil water stable aggregates in sharptooth oak forest, Chinese pine forest and meadow were 27.8%,14.0% and 5.7% respectively, and those of 2~5 mm were 6 0%, 11.1% and 8.6% respectively. Forest vegetation can obviously increase the number of >5 mm and 2~5 mm soil water stable aggregates.
出处
《西北林学院学报》
CSCD
北大核心
2002年第1期1-4,18,共5页
Journal of Northwest Forestry University
基金
国家林业局"九五"重点项目"秦岭森林生态系统结构
功能及稳定性机理研究"(96-0 3 )
