Bodemwijzer

Farm portal of Fonds Natuurinclusieve Streekboerderijen

Find out whether your measures reverse the decline in biodiversity and productivity.

Manage plots, set up experiments and keep track of fieldwork. The farm sits on one map, with the national soil, groundwater and elevation maps underneath. Satellite, weather and soil series arrive automatically; you upload the yearly soil samples yourself. That way you test, measure by measure, whether the assumption behind it holds.

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Example of a farm map from the portal. At the top right you choose between different map layers.

Our partners

  • Fonds Natuurinclusieve Streekboerderijen
  • ReGeNL

Visual maps

Detailed Dutch maps

16maps

Soil, groundwater and elevation from BIS4D, BRO and AHN sit as a layer under the farm map, each at its own resolution, with a legend and a year slider.

Veranderingen in CO2 omzetting, deels langjarig vastgelegd

2007–2023
  • Above Ground Biomass%
  • Cation Exchange Capacitymmol(c)/kg

Veranderingen in condities en biodiversiteit in de bodem

1953–2023
  • Aluminium Oxidemmol/kg
  • Bodemkaart 1:50.000
  • Bodemstikstofmg/kg
  • Bulkdichtheidg/cm3
  • Ijzer Oxidemmol/kg
  • Klei%
  • Oxalaat-Extraheerbare Fosfaatmmol/kg
  • Silt%
  • Soil Organic Matter%
  • Zand%
  • ZuurgraadpH

Veranderingen in condities en biodiversiteit in de bodem

2025
  • Grondwaterstand GHGcm-mv
  • Grondwaterstand GLGcm-mv
  • Grondwatertrap (Gt)

External data series

Satellite, weather and soil index

47series

Sentinel-2 images, hourly figures from the nearest KNMI station and NMI's Open Bodem Index arrive automatically as a time series on the plot.

Sentinel-2

since 2015
  • Fraction of Green Vegetation Cover%
  • kNDVI%

KNMI

hourly
  • Temperature°C
  • Humidity%
  • Wind speedkm/h
  • Wind direction°
  • Precipitationmm

NMI Open Bodem Index

scale 0–1
  • Total
  • Chemistry
  • Physics
  • Biology
  • Environment
  • Management

OBI-indicatoren

34 series
  • Structure & water10
  • Chemistry & nutrients9
  • Environment & water quality8
  • Soil management5
  • Soil biology2

Reading lab reports

Lab reports become time series

3types

A PDF from the lab is read according to that lab's report structure; the sections it recognises end up as a measurement series at the sample point.

BemestingsWijzer

Eurofins
  • ResultaatChemisch, Fysisch, Biologisch
  • Methods

BodemlevenMonitor

Eurofins
  • ResultaatBiologisch, Fysisch
  • Organische stof

Sensorisch landschap

Sensorisch Landschap
  • Chemie
  • Water
  • Vegetatie
  • Fysisch
  • Bodembiologie

More maps are added all the time.

From photosynthesis to end product

The portal works towards one goal: turning the decline in biodiversity and natural productivity into an increase. If you limit the harvest to part of the growth and leave the rest to the soil life, the spiral turns the other way: more vitality, more photosynthesis, more growth.

The eight themes follow a farm's biomass production process: from photosynthesis in the green leaf to food, wood and fibre for the end user. Under each theme are the subgoals, with the measures that should contribute to them and the indicators that measure the effect. Measures that come at the expense of a subgoal are dropped.

One measure often works on several subgoals at once; per theme we therefore count it once.

8themes
19subgoals
29measures
ThemeSubgoalsMeasures
1
Veranderingen in CO2 omzetting, deels langjarig vastgelegd
27
2
Veranderingen in condities en biodiversiteit in de bodem
49
3
Veranderingen in condities en biodiversiteit in de bodem
15
4
Veranderingen in biodiversiteit op de bodem
212
5
Optimale grondgebonden productstromen naar de markt
117
6
...
00
7
Optimale jaarlijkse omzet-stroom
412
8
Jaarlijkse beperking van kosten
510

Every subgoal is a practical question. For example: “How do you optimise leaf area for maximum conversion of CO₂ and water into biomass?”

Farm, plots and priorities

All the farm's plots, landscape units and sample points on one map, with the national soil, groundwater and elevation maps underneath. On it you discuss which bottlenecks in the eight themes get attention first.

Plot

Home plot South East

Area
7.15 ha
Landscape unit
LU2Hedgerow landscape
Soil
Low-lime sand · pH 5.1 · former maize field
Priorities
21
23
42

Soil surveys

Home plots Eurofins 2025
8 points
Home plots Eurofins 2024
8 points

Experiments

Aluminium experiment
Active

Experiments and measures

An experiment brings together the measures applied on the plots and the indicators that should show their effect. For each measure you see whether it is proposed, accepted or carried out; reminders plan the fieldwork and observations record what there was to see.

Aluminium experiment

Active
7.15 haHome plot South East

Setup

  2. 21.1Determine physical soil values and bring them to target value
    22.1Take stock of changes in soil carbon
    23.1Select tree species that work with mycorrhiza
    Proposed

Hypothesis

Binding free aluminium lowers aluminium saturation and raises the pH. More nitrogen fixation and soil life make the vegetation denser and the choice of crops wider.

Subgoals

21Optimal physical soil condition
23Optimal biodiversity in soil fungi
42Optimal biodiversity in the flora

Indicators

An indicator links a subgoal to a measurement series on the plot: soil organic matter, carbon storage down to 30 cm, aboveground biomass, vegetation cover. The series is shown as a chart next to its target value, so you can see which way it is heading.

Indicators · Home plot South East

7 yearly rounds
Soil organic matter 0–30 cm%
4.05 %+10.4%/yr
Acidity 0–30 cmpH
5.58 pH+1.7%/yr
Aluminium saturation 0–25 cm%
2.40 %-12.7%/yr

Soil samples and long-term monitoring

The same round every year: sample points on the map, soil samples from the field, a lab report that comes back as a measurement series at the point. Many measures rest on assumptions; the measurements test them and validate the satellite data for the same spot.

Sample points

7.15 haHome plot South East
8 points

Yearly cycle

2025Home plots Eurofins 2025Sent to lab
2024Home plots Eurofins 2024Measurements linkedEurofins report 2024-05.pdf
2023Home plots Eurofins 2023Measurements linkedEurofins report 2023-05.pdf

Frequently asked questions

Bodemwijzer is the farm portal of the Fonds Natuurinclusieve Streekboerderijen. The fund is involved with participating farms as a financial and/or knowledge partner; the portal was designed by FNS with support from the ReGeNL project.

Your farm does. FNS maintains and develops the software; the filled-in portal belongs to the farm and is only accessible with the farmer's permission.

With a conversation on the farm. We map out the long-term planning and, using the eight themes, go through the bottlenecks to decide which come first. Once those priorities are clear, we plan measures with the indicators that should measure their effect, and set up the portal.

We can offer the portal and a number of soil samples free of charge, thanks to support from the ReGeNL project. The costs of the measures you then apply are for the farm itself. We expect to be able to offer this support for five years.

Part of it arrives automatically: Sentinel-2 images, the hourly figures from the nearest KNMI station and the Open Bodem Index appear on their own as a time series at the plot. We keep expanding this. After an experiment is set up, we discuss together which extra measurements we need. We take these yearly soil samples together with a soil specialist; you upload the lab report as a PDF so that time series can be made. You add field observations and photos whenever you happen to be out in the field.

We mainly use satellite data to map bottlenecks. In practice, so far it is mostly about the living soil, and those measurement results turn out to be highly specific to the location.

Ask us. The portal is set up so that integrations can be added: map layers and time series from other services and data sources can usually be added quickly. Let us know which source it is, and we will see what it takes.

For many measures there is an assumption behind it, and you test it with measurements that build up over the years. After one round, the chart next to the target value mostly shows a starting point; the direction becomes visible as the series gets longer. The portal is built around that long-term record.

Only if you choose to. We suggest that participants put their series next to those of farms in a similar situation, because measurement results are highly specific to the location and only gain meaning next to a second farm. Without the farmer's permission, that does not happen.

Is your question not listed?

Start with a conversation

Do you want to actively contribute to the development of nature-inclusive regional farms, or start one yourself? Get in touch. Together we walk through the farm, decide which bottlenecks come first and then set up the portal.

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Bodemwijzer
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