Eucalyptus Carbon Stock Research in an Integrated Livestock-Forestry System in Brazil

Morales, Marina Moura; Tonini, Hélio; Behling, Maurel; Hoshide, Aaron Kinyu

doi:10.3390/su15107750

Cited by 9 publications

(2 citation statements)

References 47 publications

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“…Models of individual trees are required to describe the basic attributes of trees [35,[49][50][51][52][53][54][55] as well as entire forests [48]. These models are essential in forestry [56] because they can facilitate decision-making in sustainable forestry practice, as well as estimating forest biomass yields [57][58][59].…”

Section: Literature Reviewmentioning

confidence: 99%

Modeling the Geometry of Individual Tree Trunks Using LiDAR Data

Tarsha Kurdi,

Gharineiat,

Lewandowicz

et al. 2023

Preprint

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Effective development of digital twins of real-world objects requires sophisticated data collection techniques and algorithms for automated modeling of individual objects. In City Information Modeling (CIM) systems, individual buildings can be modeled automatically at the second Level Of Detail or LOD 2. Similarly, automated solutions for 3D modeling of individual trees at different levels of details are required for Tree Information Modeling (TIM) and building Forest Digital Twins (FDT). The existing algorithms support the automated modeling of trees by generating models of the canopy and the lower part of the trunk. Our work in this paper is based on the assumption that, similar to the canopy shape, the structure of tree trunk and branches is also an important consideration. An algorithm for automated modeling of tree trunks is proposed. Aiming to generate 3D models of tree trunks, the suggested approach starts by extracting the trunk point cloud, which is then segmented into single stems. Finally, the individual stems are modeled by dividing them into slices. The geometry of the developed tree models is represented in a matrix format. This solution enables automatic comparisons of tree elements over time, which is necessary for monitoring changes in forest stands and promoting sustainable forest management. Despite the huge variation of trunk geometric forms, the proposed modeling approach can gain an accuracy of better than 4 cm in the constructed tree trunk models.

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Section: Literature Reviewmentioning

confidence: 99%

Modeling the Geometry of Individual Tree Trunks Using LiDAR Data

Tarsha Kurdi,

Gharineiat,

Lewandowicz

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Models of individual trees are required to describe the basic attributes of trees [35,[49][50][51][52][53][54][55] as well as entire forests [48]. These models are essential in forestry [56], because they can facilitate decision-making in sustainable forestry practice, as well as estimating forest biomass yields [57][58][59].…”

Section: Introductionmentioning

confidence: 99%

Modeling the Geometry of Tree Trunks Using LiDAR Data

Tarsha Kurdi,

Gharineiat,

Lewandowicz

et al. 2024

Forests

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The effective development of digital twins of real-world objects requires sophisticated data collection techniques and algorithms for the automated modeling of individual objects. In City Information Modeling (CIM) systems, individual buildings can be modeled automatically at the second Level of Detail or LOD2. Similarly, for Tree Information Modeling (TIM) and building Forest Digital Twins (FDT), automated solutions for the 3D modeling of individual trees at different levels of detail are required. The existing algorithms support the automated modeling of trees by generating models of the canopy and the lower part of the trunk. Our argument for this work is that the structure of tree trunk and branches is as important as canopy shape. As such, the aim of the research is to develop an algorithm for automatically modeling tree trunks based on data from point clouds obtained through laser scanning. Aiming to generate 3D models of tree trunks, the suggested approach starts with extracting the trunk point cloud, which is then segmented into single stems. Subsets of point clouds, representing individual branches, are measured using Airborne Laser Scanning (ALS) and Terrestrial Laser Scanning (TLS). Trunks and branches are generated by fitting cylinders to the layered subsets of the point cloud. The individual stems are modeled by a structure of slices. The accuracy of the model is calculated by determining the fitness of cylinders to the point cloud. Despite the huge variation in trunk geometric forms, the proposed modeling approach can gain an accuracy of better than 4 cm in the constructed tree trunk models. As the developed tree models are represented in a matrix format, the solution enables automatic comparisons of tree elements over time, which is necessary for monitoring changes in forest stands. Due to the existence of large variations in tree trunk geometry, the performance of the proposed modeling approach deserves further investigation on its generality to other types of trees in multiple areas.

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Future perspectives of Brazilian beef production: what is the role of Silvopastoral systems?

Agethen,

Mauricio,

Deblitz

et al. 2024

Agroforest Syst

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Against the backdrop of changing production conditions and market requirements, it seems time has come to rethink Brazil’s beef production systems. We analyse the economic and environmental performance of three beef production systems: classic beef production system (CB), and two types of silvopastoral systems: the integrated crop-livestock-forestry system (ICLFS) and the natural regeneration system (NR) in a comparative case study analysis. We find that, though costs of production are the lowest for CB, only the ICLFS and NR case studies are generating long-term profits. While greenhouse gas emissions per kg live weight added are lowest in ICLFS, followed by NR and CB, per hectare (ha) emissions are highest in NR, followed by ICLFS and CB. Considering the system’s carbon removal, NR and potentially ICLFS are sequestering more than releasing. Additionally, the land required to produce beef is lowest in NR, followed by ICLFS and CB. Considering the additional outputs produced by ICLFS and NR, they showcase the potential of multifunctional production systems for future scenarios, where land scarcity puts land-demanding production systems, such as beef, under pressure. The three production systems perform differently depending on the indicators analysed. How they will reply to future challenges depends on the location and the specific environment. Yet, from the analysed systems, CB is the least sustainable, economically and environmentally.

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Eucalyptus Carbon Stock Research in an Integrated Livestock-Forestry System in Brazil

Cited by 9 publications

References 47 publications

Modeling the Geometry of Individual Tree Trunks Using LiDAR Data

Modeling the Geometry of Individual Tree Trunks Using LiDAR Data

Modeling the Geometry of Tree Trunks Using LiDAR Data

Future perspectives of Brazilian beef production: what is the role of Silvopastoral systems?

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