摘要
由土壤微生物生命活动和植物根系产生的土壤酶，不但在土壤物质转化和能量转化过程中起主要的催化作用，而且通过它对进入土壤的多种有机物质和有机残体产生的生命化学转化，使生态系统的各组分间有了功能上的联系，从而保持了土壤生物化学的相对稳衡状态［１］。土壤酶作...
The soil samples were collected from bare and fallow land, slash land and farm land along valleys in the forest areas of Ziwuling Mountains. The soil surcease, neutral phosphatase and urease as well as soil organic matter, total N and available N were analyzed. The results showed that nutrients and enzymatic activities in the soil were changed in different erosion areas of the slope land after the reclamation of the forest land. However, distribution of the nutrients and enzymatic activities in the soil profile was same. The nutriens and enzymatic activities in the soil were higher in surface layer than those in the other layers and gradually declined with increase of soil depth. The soil enzymatic activities, organic matter, total N and available N in the slash land were obviously higher than those in the forest land,bare and fallow land. This also showed that forest renewal had no negative effects on nutrients and microorganism in the soil and sometimes had positive effects. Correlation analysis showed that there were significant correlation between the activities of three enzymes and soil organic matter, total N and available N.
出处
《生态学杂志》
CAS
CSCD
北大核心
1998年第6期18-21,共4页
Chinese Journal of Ecology
基金
国家教委留学回国人员科研启动基金
国家重点实验室基金
关键词
林地砍伐
土壤
酶活性
养分
reclamation, forest land, soil enzymatic activities, soil nutrients.
