Leaf Area Index measurements in Finland

Usage Rights

This data is Private.

FunDiv intern

Dataset Abstract

Leaves are the active interface of energy, carbon and water exchanges between forest canopies and the atmosphere. The leaf component of a canopy may be quantified by its structural attribute Leaf Area Index (LAI), projected leaf area per unit of ground area. This parameter regulates several ecophysiological processes, such as evapotraspiration and photosynthesis. Hence, it is related to stand productivity and is a key variable in various stand and regional-scale models. The objective of this task is to provide an estimation of the overall photosynthetic surface and net primary production of the forest ecosystems. Indeed by means of LAI measurements the crown structure and the light conditions under the canopy layer are analyzed. In Finland (North Karelia) LAI measurements were carried out in 28 plots (30mx30m) of the Exploratory Region.

Dataset Design

LAI measurements were replicated on five positions inside each plot, in corrispondence of the littertraps. A systematic sequence of meaurements, inside in each plot, were done in order to know the variation of the leaf area inside the plot (LAI value for each littertrap position).

Spatial Extent

North Karelia, Finland

Data Analysis

Data are treated at plot level

Data columns available in the raw data part of this dataset

ID plot
Finland plot number. Unique number ascribed to each plot
Data group: Exploratory plot id
Values
FIN02
FIN03
FIN04
FIN05
FIN01
Mixture level
Mixture level
Data group: Species richness
Values
2
3
1
Species combination
Name of specie combined in each mixture. Code used: BP - Betula pendula; PA - Picea abies; PS - Pinus sylvestris
Data group: Tree species mix code
Values
PA
PA-PS-BP
PA-PS
PA-BP
BP
LAI
Leaf Area Index value
Unit: m2/m2 = total one-side leaf area / unit ground area
Data group: Leaf Area Index value
Values
2.13
1.85
1.88
1.86
1.49