General
Lanna is an agricultural site that was started with the aim of becoming ICOS Ecosystem station. The station was built up accordingly and there are CO2 and N2O flux measurements and meteorological measurements available since 2014. The station has not been part of ICOS Sweden station from 2021 onwards anymore. Please contact the Station PI, Per Weslien, for information and access to our data.
Location
Lanna (58°20′N, 13°06′E, 75 m asl) is located about 120 km north-east of Gothenburg on a large agriculturally used area plain. The site is flat and homogeneous, making it close to ideal for micrometeorological studies.
Geology and Soil
The soil was classified as an Uderic Haploboroll (USDA) with two diagnostic horizons, a Mollic epipedon and a Cambic horizon. The clay content increases with depth, 45.1% in 0-30 cm, 57.2% in 60-90 cm and 58.4% in the 60-90 cm layer.
Top soil pH is 6.8 and sub-soil pH 7.0-7.2. Organic carbon content is 3.4% in the top-soil and 0.6 and 0.0% in the sub-soil layers.
The soil structure was described as strong coarse subangular blocky in the top-soil and strong fine to medium angular blocky and strong coarse angular blocky in the sub-soil layers. The soil is normally unsaturated to a depth of 2.2 m and this zone is characterized by numerous cracks and biotic macro-pores.
Vegetation
The cultivated area of the farm is about 155 ha and the farm is operated without livestock since 1958. Cereal crops as winter wheat, spring barley, and spring oats, as well as oil seed rape (winter or spring) are common crops in the area.
Climate
With a mean annual air temperature of 6.1°C and a mean annual precipitation of 558 mm (data period 1961-1990, SMHI station Lanna) the climate is characterized after Köppen as a Cfb-climate, i.e. humid temperate with mild summers and mild winters.
Measurements
Measurements of GHG fluxes (CO2 and N2O) have been carried out from 2014 to the end of 2020 within the ICOS Sweden network. Besides this, more than 50 other different field trials are carried out at the research station. Topics are amongst others fertilization, pesticides, different soil management, and new varieties.
For more detailed information please contact the station principal investigator Per Weslien.
Contact
Per Weslien was the station principal investigator for the ICOS Sweden Ecosystem station at Lanna, and can be contacted regarding its data and measurements.
