Search for projects with tag "deuterium"

[ID: 195] Radial distribution of deuterium in Scots pine trees

The aim of the project is to describe the radial distribution of deuterium in Scots pine tree rings in order to develop a sampling methodology in 2H2-labeled water experiments . The experiment is located in Rosinedal experimental forest where 2H2-labeled water was added to soil. Tree ring samples were collected from two trees close to the labeled area in 2019. The sampling was carried out in four different heights (ground level, 1.3m, 2.0m and from the beginning of the living crown). From each height, 16 core samples were taken around the stem. In addition, core samples were taken from coarse roots.

deuterium Scots pine tree ring

[ID: 113] Nitrogen and water uptake patterns in mature spruce, pine and their mixed stands at Främlingshem

PI: Reimo Lutter

The aim of the project is to describe mature spruce, pine and their mixed stands nitrogen and water uptake patterns. Novel stable-isotope tracing techniques of 15N compounds and 2H2-labeled water in pulse-chase are used to describe trees spatial below-ground root functioning and site occupancy. The project is carried out in Främlingshem trial. The experiment started in 2019 June where blocks 1, 2, 3, 4 and 6 were labelled with 15N and deuterium. The project will give new insights about the fundamental processes of spatial root functioning (nitrogen and water uptake) and rooting area of the two most important boreal tree species (Scots pine and Norway spruce).

15n below-ground competition deuterium root functioning rooting area stable isotopes