Brief description
This data contains soil physico-chemical characteristics collected at the Robson Creek Rainforest site between 2011 - 2014.Notes
Data ProcessingSoil in pit was loamy on the southern and sandy/gravel on the northern side; excavation was restricted to a smaller area by this, work needed to be done fast also as sandy walls didn't stay in place if there was water in the pit or dry out. Because of small impact and sand in the soil, a triangular pattern for sensor-columns were chosen. One big root of a fig (diameter around 10cm) and several smaller roots had to be cut in the northern area of the pit.
Lineage
The collection of physico-chemical characteristics of soil from the Robson Creek Rainforest site was conducted between 2011 and 2014. The soil physico-chemical characteristics was described in 6 backhoe pits (each 2 m deep) over an area of about 8 x 8m, dug to assess the site for flux tower foundation. Soil samples were collected from the face of the pit for each layer :0.2 m, 0.5 m, 0.75 m, 1 m, 1.5 m, 2 m. Samples were air-dried to constant mass, sieved to 2 mm, roots and rocks removed and weighed. The samples were homogenised and sent off for analysis within 5 days. Sieved (<2mm) samples were analysed, using methods described by Rayment and Higginson (1992) for exchangeable Ca, Mg, K and Na (Method 15A1), exchangeable acidity and Al (Method 15G1), Colwell extractible P (Method 9B2), total C (Method 6B4), total N (Method 7A7), electrical conductivity (EC) and pH (both in 1:5 soil:water extract) and particle size distribution. As the soil has a high content of stones, the volumetric proportion of soil and rock was determined at several depths. The total volume of each depth increment was determined by pouring measured volumes of sand into a pit as it was excavated. The excavated soil was sieved (2 mm); and material passing through the sieve was called soil. Material that was retained on the sieve was mechanically tumbled for 45 minutes in order to break apart aggregates of soil and to separate soil from the rocks. The tumbled material was sieved again through a 2mm sieve and the material retained was separated into roots and rocks. All materials were weighed and the water content of the soil was determined. Using a calibrated 20L bucket, the volume of rocks (pre-wet to prevent loss of water by absorption) was measured. The volume of soil in each layer was calculated by subtracting rock volume from the volume of the excavated hole. To measure soil temperature and water content, 3 types of soil monitoring probes were installed, 8x CS229 probes to measure water tension, 9x CS616 TDR probes to measure volumetric water content, 1x TCAV probe to measure average soil temperature the probes were deployed in the loamy area of the pit (SW corner, S corner and SE wall). Four depths were reached: -100 mm, -750 mm, -1500 mm and -2000 mm. Per depth 3x TDR and 2x CS229 were deployed in a triangular pattern; vertically in columns 1m apart and numbered as I (SW corner), II (S corner) and III (SE wall, TDR only); the TCAV probe was deployed at -750mm between the columns. The TDR probes were pushed horizontally into the loamy soil (TDR III@-750mm had to be pushed into a mix of loam/coarse sand). The CS229 probes were laid down horizontally in close proximity (5-10cm) to the TDR probes in column I and II and buried in fine loam scraped from the walls at the spots; the probes weren't saturated with water before deployment. The TCAV probes were pushed into the soil horizontally (pairs 5cm vertically apart) in the SE wall and SW wall, half way between the columns I/II and II/III.
Progress Code: completed
Maintenance and Update Frequency: notPlanned
Notes
CreditWe at TERN acknowledge the Traditional Owners and Custodians throughout Australia, New Zealand and all nations. We honour their profound connections to land, water, biodiversity and culture and pay our respects to their Elders past, present and emerging.
Created: 2011-09-14
Issued: 2024-08-14
Modified: 2024-08-14
Data time period: 2011-09-14 to 2014-06-28
text: The Robson Creek 25-ha rainforest site is located in the Danbulla National Park within the Wet Tropics World Heritage Area in the Atherton Tablelands in Far North Queensland.
Subjects
1 meter - < 30 meters |
Annual |
CONDUCTIVITY |
Campbell Scientific CS616 |
Cubic Centimeter per Cubic Centimeter |
EARTH SCIENCE |
Earth Sciences |
Ecological Applications |
Environmental Sciences |
FNQ Rainforest |
Far North Queensland |
Geochemistry |
Landscape Ecology |
MINERALS |
Meter |
Milligram per Kilogram |
Percent |
ROCKS/MINERALS/CRYSTALS |
Robson Creek |
Robson Creek Rainforest |
Robson Creek, core1ha |
SOIL CHEMISTRY |
SOIL HORIZONS/PROFILE |
Soil Sciences |
SOIL TEMPERATURE |
SOILS |
SOLID EARTH |
Soil Biology |
Soil classification |
Soil physico-chemical |
Soil pit |
Unitless |
biota |
decisiemens per metre |
degree Celsius |
environment |
soil carbon content (Percent) |
soil copper (Milligram per Kilogram) |
soil depth (Meter) |
soil electrical conductivity (decisiemens per metre) |
soil iron (Milligram per Kilogram) |
soil manganese (Milligram per Kilogram) |
soil nitrogen content (Percent) |
soil pH (Unitless) |
soil phosphorus (Milligram per Kilogram) |
soil potassium (Milligram per Kilogram) |
soil temperature (degree Celsius) |
soil volumetric water content (Cubic Centimeter per Cubic Centimeter) |
soil zinc (Milligram per Kilogram) |
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Other Information
Point-of-truth metadata URL
Rayment, G.E. and Higginson, F.R. (1992) Australian Laboratory Handbook of Soil and Water Chemical Method. Reed International Books Australia P/L, Trading as Inkata Press, Port Melbourne, 330 p.
AU-ANL:PEAU :
https://catalogue.nla.gov.au/Record/685915
Identifiers
- URI : geonetwork.tern.org.au/geonetwork/srv/eng/catalog.search#/metadata/66648cf1-9e47-410b-a7cf-e07d24f30bb1
- global : 66648cf1-9e47-410b-a7cf-e07d24f30bb1
