Intercantonal Forest Observation Program – Interkantonale Walddauerbeobachtung (WDB)
The IAP has been monitoring forest health since 1984 on behalf of cantonal forest and environmental offices and in collaboration with the Federal Office for the Environment. In the Interc...
Leaf area index (LAI) LWF
Leaf area index (LAI), defined as the total one-sided foliage area per unit ground surface area, is one of the most important characteristics of plant canopy structure. Leaves are the act...
Litterfall LWF
Litterfall is a key parameter in the biogeochemical cycle of forest ecosystems, linking the tree part to the soil compartment. Litterfall has been collected on 15 LWF plots using 10 traps...
Manual circumference band measurement LWF
Tree circumference change measurements from plastic girth bands Purpose: Assessment of annual tree stem growth Manual Citation: * Dobbertin M, Neumann M, 2016: Part V: Tree ...
Matric potential (manual suction cups) LWF
Measurement of the soil water availability to plants at 10 LWF plots every 14 days in 5 soil depths (15, 30, 50, 80, 130 cm) with 8 replicates (usually in the IM plot). The range of meas...
Meteorological measurements LWF
Continuous measurement of air temperature, relative humidity, wind speed and direction, global radiation, photosynthetic active radiation, UVB radiation, and precipation in an open field ...
MPS-2 on LWF Visp to survey 2017 mortality wave
Continuous measurement of soil matrix potential at 15, 50 and 100 cm depth with Decagon MPS-2 sensors 1 m N, SE and SW from the stem of 3 threes within much and 3 trees within few shrubs...
MPS-2 soil water matric potential LWF
Continuous measurement of soil matrix potential at 15, 50 and 80 cm depth with Decagon MPS-2 sensors Purpose: Improve the available data for the calibration or validation of the water c...
Non-Binary Environmental Archive Data (NEAD) format
Important note: From 2025 the NEAD format is being transformed into the interoperable CSV (iCSV) format, a formalized and standardized evolution of the NEAD format. Furthermore, iCSV shou...
Ozone measurement and analysis in the Intercantonal Forest Observation Program
In order to quantify effects of ozone on Swiss forest ozone flux calculations are needed. Currently 5 stations are operated to measure the ozone load on forests. These data form the basis...
Passive sampling of NH3 LWF
NH&8323; concentrations were measured at 11 LWF plots (1999/2000) with Zürcher passive samplers (Palmes-type diffusion tubes with an acidic solution as absorbent) during one year. Three s...
Passive sampling of NO2 LWF
NO&8322; concentrations were measured at 11 LWF plots (1999/2000) with passive samplers (Palmes-type diffusion tubes) during one year. Three samplers per site and period (usually 14 days)...
Passive sampling of O3 LWF
Measuring air pollutants in forests is important for evaluating the risk for vegetation in areas not covered by conventional air quality monitoring networks. Ozone measurements are carrie...
Permanent vegetation quadrats LWF
Ground vegetation is an important compartment of the ecosystem in terms of biodiversity and it takes an active part in the general functioning of the ecosystem. It is also a useful bio-in...
Phenological observations LWF
Phenological observations are recorded every 14 days on LWF plots where throughfall and bulk precipitation are sampled. The percentage of foliage in reference to its maximum potential dev...
Sapflow measurements LWF
Continuous sap flow measurements with Granier-needles to investigate carbon balance and water relations of trees Purpose: Assessment of water cycle processes
Soil matrix chemistry LWF
Assessment of several chemical soil parameters at the beginning of the monitoring campaign. Most parameters were determined accordung to the manual of ICP-Integrated-Monitoring. The param...
Soil moisture and soil water potential measurements of the Intercantonal Forest Observation Program
Since 2001 soil water content and soil water potential are measured in 40 plots of the *[Intercantonal Forest Observation Program](https://www.envidat.ch/dataset/interkantonale-walddauerb...
Soil morphology LWF
Description of several morphological soil properties at the beginning of the monitoring campaign. The properties were described for all genetic horizons in soil pits if possible down to t...
Soil solution chemistry (lysimeters) LWF
Fortnightly measurement of the soil solution chemistry in 4 soil depths with zero-tension lysimeter below the litter layer and with tension lysimeters at depths of 15, 50 and 80 cm (8 re...
Soil solution monitoring of the Intercantonal Forest Observation Program
Since 1997 soil solution samplers are installed in certain plots of the Intercantonal Forest Observation Program *[Intercantonal Forest Observation Program](https://www.envidat.ch/dataset...
Stem discs LWF
Measurement of tree ring widts in tree stem disks according to 'Bräker O.U. (1993) Anleitung zur Entnahme von Stammscheiben auf Ertragskundeflächen' Purpose: tree growth
Stemflow LWF
Stemflow (portion of precipitation running down the branches and the trunk and depositing at the base of the tree) can represent a substantial fraction of the total water and nutrient inp...
Symptoms of O3 injuries LWF
Measuring air pollutants in forests is important for evaluating the risk for vegetation in areas not covered by conventional air quality monitoring networks. Ozone-induced symptoms are be...