We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Underestimation of boreal forest soil carbon stocks related to soil classification and drainage<sup>1</sup>.
- Authors
Dalsgaard, Lise; Lange, Holger; Strand, Line Tau; Callesen, Ingeborg; Borgen, Signe Kynding; Liski, Jari; Astrup, Rasmus
- Abstract
Soil organic carbon (C), accumulated over millennia, comprise more than half of the C stored in boreal and temperate forest landscapes. We used the Norwegian national forest inventory and soil survey network ( n = 719, no deep organic soils) to explore the validity of a deterministic model representation of this pool (Yasso07). We statistically compared simulated and measured soil C stocks and related differences (measured - simulated) to site factors (drainage, topography, climate, vegetation, C-to-N ratio, and soil classification). Median C stocks were 5.0 kg C·m−2 (model) and 14.5 kg C·m−2 (measurements). Soil C differences related to site factors ( r2 of 0.16 to 0.37). For Brunisols, Gleysols, and wet Organic soils, differences related primarily to topographic wetness. For Regosols, Podzols, and Dystric Eluviated Brunisols, they related to climate, profile depth, and, in some cases, drainage class and site index. We argue that soil moisture regimes in our study area overrule tree productivity effects in the determination of soil C stocks and present conditions for soil formation that the model cannot (and does not explicitly) account for. These are processes such as humification and podsolization that involve eluviation and illuviation of dissolved organic C (DOC) with sesquioxides to form spodic B horizons and carbon enrichment due to hampered decomposition in frequently anoxic conditions.
- Subjects
TAIGA ecology; SOIL classification; DRAINAGE; SOIL moisture conservation; SOIL surveys
- Publication
Canadian Journal of Forest Research, 2016, Vol 46, Issue 12, p1413
- ISSN
0045-5067
- Publication type
Article
- DOI
10.1139/cjfr-2015-0466