A dataset of detailed 3-dimensional surface geometry, optical properties of Scots pine and Norway spruce shoots
Description
The dataset provides 3-dimensional structural and optical information for 27 shoots of two conifer species common to both study locations — Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) Karst.) — with three shoots collected per species and crown position. The data include high-resolution 3D surface models, photos of each sampled shoot, and the optical properties of needles and twigs. High-resolution 3D point cloud representations of the shoots were obtained using a blue-light 3D photogrammetry scanning technique. Reflectance and transmittance measurements of needles and twigs were acquired with a spectroradiometer coupled to an integrating sphere. For each sample, the dataset contains: 1. Reconstructed 3-dimensional surface geometry model (.OBJ) 2. Photo of the sampled shoot (.JPG) 3. Optical property data of needles and twigs, including hemispherical–conical reflectance (HCRF) and transmittance (HCTF) factors (.CSV) measured over the 400–2000 nm spectral range. Detailed 3D representations of conifer shoots, when combined with radiative transfer modeling, can support improved interpretation of needle optical properties and enhance the quantification of shoot-level light scattering. Branches of P. sylvestris and P. abies were collected from both upper and lower crown positions in Kanice and Rájec, Czech Republic (22 April 2024), and Järvselja, Estonia (17 September 2024). Immediately after collection, shoots were stored in a cooling box to preserve their structural integrity. In the laboratory, samples representing current-year, one-year-old, and two-year-old growth were analyzed. Shoots were scanned using an industrial non-contact 3D scanner (GOM Scan 1, MV 200 version; Carl Zeiss GOM Metrology GmbH, Germany). Reflectance and transmittance spectra of needles were measured using an ASD FieldSpec® 4 spectroradiometer (Malvern Panalytical Ltd., Malvern, UK). Localization: Rájec Country: the Czech Republic Latitude and longitude: 49° 26′ 44.88″ N, 16° 41′ 47.76″ E Localization: Kanice Country: Czech Republic Latitude and longitude: 49° 15′ 56.68″ N, 16° 40′ 44.86″ E Localization: The SMEAR Estonia station Country: Estonia Latitude and longitude: 58° 16′ 17.04″ N, 27° 16′ 13.08″ E This study was supported by the Czech-Estonian joint mobility project between the Estonian academy of Sciences and the Czech Academy of Sciences no. EAS-24-01. This study was funded by the Estonian Research Council grant PRG1405, SLTTO22345, and by Estonian Ministry of Education and Research, Centre of Excellence for Sustainable Land Use (TK232). This work was supported by the Ministry of Education, Youth and Sports of CR within the CzeCOS program, grant number LM2023048, the Grant Agency of the Masaryk University, grant MUNI/A/1648/2024 Dynamics of the Natural and Social Environment in a Geographical Perspective (DYNAGEO).
Files
Steps to reproduce
For the methods, see Pisek J., Borysenko, A., Janoutová, R., Homolová, L. 2023. Estimation of coniferous shoot structure by high precision blue light 3D photogrammetry scanning. Remote Sensing of Environment, in press.
Institutions
- Tartu Observatoorium
- Ustavu vyzkumu globalni zmeny Akademie ved Ceske republiky
- Eesti Maaulikool
- Masarykova univerzita