第四纪红黏土区退化马尾松皆伐迹地短期恢复效果研究

以退化马尾松皆伐迹地表层(0-20 cm)土壤为对象,通过临近设置样地的方法,分别从理化性质、酶活性和微生物学性质对3种乡土植被(灌木丛、芒萁和白茅)的短期恢复效果进行研究。结果表明,白茅可明显提高皆伐迹地土壤理化性质,特别是土壤中磷、钾含量,但3种植被对土壤酸化改良效果均不明显。各恢复措施均不同程度提高了土壤生化强度,其中灌木丛和芒萁效果较明显,但白茅可提供较高质量的有机质而有利于有机碳积累,从而可能改善微生物区系。因此,白茅可作为研究区退化马尾松皆伐迹地土壤改良的选择性植被,而芒萁不宜长期种植。

Short-term Effect of Restoration Approaches on Soil Quality of Pinus massoniana Clear-cutting Land in Quaternary Red Clay Area

Take Pinus massoniana clear-cutting land as an objective,this article put attention on the short-term effect of three native vegetation of shrubbery(BS),Dicranopteris dichotoma(DDB) and Imperata cylindrica(IC) on surface(0-20 cm) soil quality from the point of view of soil physicochemical properties,enzyme activities and microbial properties.The result showed that IC could improve soil physicochemical properties as a whole,especially for phosphorus and potassium.But these restoration approaches weren't able...