Tree measurements 2002-2016 from the long-term irrigation experiment Pfynwald, Switzerland

To study the performance of mature Scots pine (Pinus sylvestris L.) under chronic drought conditions in comparison to their immediate physiological response to drought release, a controlled long-term and large-scale irrigation experiment has been set up in 2003. The experiment is located in a xeric mature Scots pine forest in the Pfynwald (46° 18' N, 7° 36' E, 615 m a.s.l.) in one of the driest inner-Alpine valleys of the European Alps, the Valais (mean annual temperature: 9.2°C, annual precipitation sum: 657 mm, both 1961-1990). Tree age is on average 100 years, the top height is 10.8 m and the stand density is 730 stems ha-1 with a basal area of 27.3 m2 ha-1. The forest is described as Erico Pinetum sylvestris and the soil is a shallow pararendzina characterized by low water retention. The experimental site (1.2 ha; 800 trees) is split up into eight plots of 1'000 m2 each. During April-October, irrigation is applied on four randomly selected plots with sprinklers of 1 m height at night using water from an adjacent water channel. The amount of irrigation corresponds to a supplementary rainfall of 700 mm year-1. Trees in the other four plots grow under naturally dry conditions. Soil moisture has been monitored since the beginning of the project at 3 soil depths (10, 20 and 60 cm). The crown condition of each tree is being assessed each year since 2003. Tree measurement data such as diameter at breast height, tree height, and social status were assessed in 2002, 2009 and 2014. The duration of the irrigation experiment is planned for 20 years.

Citation:

Marcus Schaub; Matthias Haeni; Christian Hug; Arthur Gessler; Andreas Rigling (2016). Tree measurements 2002-2016 from the long-term irrigation experiment Pfynwald, Switzerland. Swiss Federal Research Institute WSL / SwissForestLab. doi:10.16904/11.

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Metadata

Field Values
DOI 10.16904/11
Authors
  • Name: Marcus Schaub  Email: marcus.schaubfoo(at)wsl.ch  Affiliation: Swiss Federal Research Institute WSL
  • Name: Matthias Haeni  Email: matthias.haenifoo(at)wsl.ch  Affiliation: Swiss Federal Research Institute WSL
  • Name: Christian Hug  Email: christian.hugfoo(at)wsl.ch  Affiliation: Swiss Federal Research Institute WSL
  • Name: Arthur Gessler  Email: arthur.gesslerfoo(at)wsl.ch  Affiliation: Swiss Federal Research Institute WSL
  • Name: Andreas Rigling  Email: andreas.riglingfoo(at)wsl.ch  Affiliation: Swiss Federal Research Institute WSL
Contact Person Name: Marcus Schaub  Email: marcus.schaubfoo(at)wsl.ch  Affiliation: Swiss Federal Research Institute WSL
Subtitles
Publication Publisher: Swiss Federal Research Institute WSL / SwissForestLab  Year: 2016
Dates
  • Type: Created  Date: 2018-07-06
Version 2016
Type
General Type Dataset
Language English
Location Pfynwald, Valais, Switzerland
Content License ODbL with Database Contents License (DbCL)    [Open Data]
Last Updated August 20, 2019, 16:20 (CEST)
Created November 4, 2016, 14:48 (CET)