Increased nitrogen leaching under piles of slash— a consequence of modern forest harvesting techniques
作者:
Kaj Rosén,
Anita Lundmark‐Thelin,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1987)
卷期:
Volume 2,
issue 1-4
页码: 21-29
ISSN:0282-7581
年代: 1987
DOI:10.1080/02827588709382443
出版商: Taylor & Francis Group
关键词: nitrogen;soil water;clear‐felling;slash
数据来源: Taylor
摘要:
Piles of logging residues (slash‐piles) are a consequence of modem logging techniques. The piles cover 10 to 15% of a clear‐felled area. The effect of slash‐piles on nitrogen leaching was estimated by collecting precipitation1and percolating water below slash‐piles and below the O, E and B horizons of an Orthic Podzol during two growing seasons. Open funnels were used for precipitation, PVC troughs for water leaving the pile and filled‐in zero tension lysimeters for percolating soil water. Exchangeable ammonium and nitrate of humus samples were analysed. The increased nitrogen leaching from the soil below slash‐piles was probably caused by an increased mineralization of the humus layer and a reduced nitrogen uptake by roots.
点击下载:
PDF (525KB)
返 回