Current issue: 53(2)

Under compilation: 53(3)

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Silva Fennica 1926-1997
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Acta Forestalia Fennica
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Articles containing the keyword 'root biomass'.

Category: Article

article id 5560, category Article
Carl Johan Westman. (1995). A simple device for sampling of volumetric forest soil cores. Silva Fennica vol. 29 no. 3 article id 5560. https://doi.org/10.14214/sf.a9211

A simple, manually-operated and easily portable device for sampling volumetric soil cores to a depth of 100 cm with a minimum soil disturbance is described. The device consists of a sample tube, a sampler and an extension tube. A dead blow nylon mallet is used to force the sampler into the soil and a small winch attached to an aluminium tube pulls the sampler from the soil. The total weight of the equipment (sampler, mallet and winch) is 18.5 kg and may be carried in the trunk of a small car. Sampling is easily done by one person in good physical condition but four-handed operation is recommended as more efficient. The sampling device has been in heavy use during the summers of 1993–95 when several hundred soil cores have been extracted on various sites all over Finland.

  • Westman, ORCID ID:E-mail:
article id 5436, category Article
Leena Finér. (1991). Root biomass on an ombrotrophic pine bog and the effects of PK and NPK fertilization. Silva Fennica vol. 25 no. 1 article id 5436. https://doi.org/10.14214/sf.a15590

Scots pine (Pinus sylvestris L.) living root biomass (ø≤ 10 mm) was 640 g/m2 on the studied low-shrub pine bog before fertilization, and that of the ground vegetation almost the same. The total root necromass was 23% of the biomass of living roots. The length of the pine roots was 2,440 m/m2. The biomass of living roots and root necromass were mostly located in the top 20 cm layer of the soil. The ø < 1 mm pine root fraction accounted for almost 90% of the pine root length; in contrast, over 50% of the biomass was in the 1–10 mm thick root biomass, pine root length and PK (MgB) fertilization did not affect total living root biomass, pine root length, nor the root necromass during the three-year observation period.

The PDF includes an abstract in Finnish.

  • Finér, ORCID ID:E-mail:

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