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 will however not be continued as an ICOS Sweden station after 2020. Please contact the Station PI, Per Weslien, for information and access to our data.
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.
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.
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.
Besides standard ICOS measurements 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.
At present, an experimental setup comprising six 1 ha test plots, each equipped with a CO2 and CH4 concentration gradient detection setup, is being operated by Gothenburg University in the field immediately adjacent to the ICOS setup. For more detailed information please contact the station principal investigator Per Weslien.
Per Weslien is the station principal investigator for the ICOS Ecosystem station at Lanna, and can be contacted regarding its data and measurements.