Journal
JOURNAL OF FOREST RESEARCH
Volume 15, Issue 3, Pages 194-201Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1007/s10310-009-0176-y
Keywords
Fine roots; Fraxinus mandshurica; Larix gmelinii; Nitrogen fertilization; Production and turnover
Categories
Funding
- Natural Science Foundation of China [NSFC 30130160]
Ask authors/readers for more resources
The responses of fine root mass, length, production and turnover to the increase in soil N availability are not well understood in forest ecosystems. In this study, sequential soil core and ingrowth core methods were employed to examine the responses of fine root (a parts per thousand currency sign1 mm) standing biomass, root length density (RLD), specific root length (SRL), biomass production and turnover rate to soil N fertilization (10 g N m(-2) year(-1)) in Larix gmelinii (larch) and Fraxinus mandshurica (ash) plantations. N fertilization significantly reduced fine root standing biomass from 130.7 to 103.4 g m(-2) in ash, but had no significant influence in larch (81.5 g m(-2) in the control and 81.9 g m(-2) in the fertilized plots). Similarly, N fertilization reduced mean RLD from 6,857 to 5,822 m m(-2) in ash, but did not influence RLD in larch (1,875 m m(-2) in the control and 1,858 m m(-2) in the fertilized plots). In both species, N fertilization did not alter SRL. Additionally, N fertilization did not significantly alter root production and turnover rate estimated from sequential soil cores, but did reduce root production and turnover rate estimated from the ingrowth core method. These results suggested that N fertilization had a substantial influence on fine root standing biomass, RLD, biomass production and turnover rate, but the direction and magnitude of the influence depended on species and methods.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available