Allometric equations for estimating tree biomass in restored mixed-species Atlantic Forest stands

Restoration of Atlantic Forests is receiving increasing attention because of its role in both biodiversity conservation and carbon sequestration for global climate change mitigation. This study was carried out in an Atlantic Forest restoration project in the south-central region of São Paulo State - Brazil to develop allometric equations to estimate tree biomass of indigenous tree species in mixed plantations. Above and below-ground biomass (AGB and BGB, respectively), stem diameter (DBH: diameter at 1.3 m height), tree height (H: total height) and specific wood density (WD) were measured for 60 trees of 19 species. Different biomass equations (linear and nonlinear-transformed) were adjusted to estimate AGB and BGB as a function of DBH, H and WD. For estimating AGB and BGB, the linear biomass equation models were the least accurate. The transformed nonlinear biomass equation that used log DBH2, log H and log WD as predictor variables were the most accurate for AGB and the transformed nonlinear biomass equations that used log DBH2*WD as predictor variables were the most accurate for BGB. It is concluded that these adjusted equations can be used to estimate the AGB and BGB in areas of the studied project. The adjusted equations can be recommended for use elsewhere in the region for forest stands of similar age, tree size ranges, species composition and site characteristics.

Download Full-text

Additive biomass equations for slash pine trees: comparing three modeling approaches

Canadian Journal of Forest Research ◽

10.1139/cjfr-2018-0246 ◽

2019 ◽

Vol 49 (1) ◽

pp. 27-40 ◽

Cited By ~ 10

Author(s):

Dehai Zhao ◽

James Westfall ◽

John W. Coulston ◽

Thomas B. Lynch ◽

Bronson P. Bullock ◽

...

Keyword(s):

Pinus Elliottii ◽

Slash Pine ◽

Seemingly Unrelated Regression ◽

Total Biomass ◽

Tree Biomass ◽

Biomass Equation ◽

Fit Statistics ◽

Biomass Equations ◽

Pine Trees ◽

Total Tree

Both aggregative and disaggregative strategies were used to develop additive nonlinear biomass equations for slash pine (Pinus elliottii Engelm. var. elliottii) trees in the southeastern United States. In the aggregative approach, the total tree biomass equation was specified by aggregating the expectations of component biomass models, and their parameters were estimated by jointly fitting all component and total biomass equations using weighted nonlinear seemingly unrelated regression (NSUR) (SUR1) or by jointly fitting component biomass equations using weighted NSUR (SUR2). In an alternative disaggregative approach (DRM), the biomass component proportions were modeled using Dirichlet regression, and the estimated total tree biomass was disaggregated into biomass components based on their estimated proportions. There was no single system to predict biomass that was best for all components and total tree biomass. The ranking of the three systems based on an array of fit statistics followed the order of SUR2 > SUR1 > DRM. All three systems provided more accurate biomass predictions than previously published equations.

Download Full-text

A review of biomass equations for China's tree species

Earth System Science Data ◽

10.5194/essd-12-21-2020 ◽

2020 ◽

Vol 12 (1) ◽

pp. 21-40 ◽

Cited By ~ 7

Author(s):

Yunjian Luo ◽

Xiaoke Wang ◽

Zhiyun Ouyang ◽

Fei Lu ◽

Liguo Feng ◽

...

Keyword(s):

Tree Species ◽

Carbon Accounting ◽

Sub Saharan Africa ◽

Background Information ◽

Vegetation Coverage ◽

Biomass Estimation ◽

Tree Biomass ◽

Biomass Equation ◽

Geographical Regions ◽

Biomass Equations

Abstract. Tree biomass equations are the most commonly used method to estimate tree and forest biomasses at various spatial and temporal scales because of their high accuracy, efficiency and conciseness. For decades, many tree biomass equations have been reported in diverse types of literature (e.g., journals, books and reports). These scattered equations are being compiled, and tree biomass equation datasets are currently available for many geographical regions (e.g., Europe, North America and sub-Saharan Africa) and countries (e.g., Australia, Indonesia and Mexico). However, one important country stands out as an area where a large number of biomass equations have not yet been reviewed and inventoried extensively: China. Therefore, in this study, we carried out a broad survey and critical review of the literature (from 1978 to 2013) on biomass equations in China and compiled a normalized tree biomass equation dataset for China. This dataset consists of 5924 biomass equations for nearly 200 tree species and their associated background information (e.g., geographical location, climate and stand description), showing sound geographical, climatic and forest vegetation coverage across China. The dataset is freely available at https://doi.org/10.1594/PANGAEA.895244 (Luo et al., 2018) for noncommercial scientific applications, and this dataset fills an important regional gap in global biomass equations and provides key parameters for biomass estimation in forest inventory and carbon accounting studies in China.

Download Full-text

ChinAllomeTree 1.0: China's normalized tree biomass equation dataset

10.5194/essd-2019-1 ◽

2019 ◽

Author(s):

Yunjian Luo ◽

Xiaoke Wang ◽

Zhiyun Ouyang ◽

Fei Lu ◽

Liguo Feng ◽

...

Keyword(s):

Geographical Location ◽

Allometric Equation ◽

Carbon Accounting ◽

Sub Saharan Africa ◽

Background Information ◽

Biomass Estimation ◽

Tree Biomass ◽

Biomass Equation ◽

Geographical Regions ◽

Biomass Equations

Abstract. The tree biomass equation, which is also called the tree allometric equation, is the most commonly used method to estimate tree and forest biomass at various spatial-temporal scales because of its high accuracy, efficiency and conciseness. For decades, many tree biomass equations have been reported in diverse types of literature (e.g., journals, books and reports). These scattered equations are being compiled, and tree biomass equation datasets are currently available for many geographical regions (e.g., Europe, North America and Sub-Saharan Africa) and countries (e.g., Australia, Indonesia and Mexico) except for in an important region of the world, Eastern Asia, specifically China. Therefore, in this study, we carried out an extensive survey and critical review of the literature (from 1978–2013) on biomass equations conducted in China and developed China’s normalized tree biomass equation dataset (ChinAllomeTree version 1.0). This dataset consists of 5,924 biomass component equations for nearly 200 species and their associated background information (e.g., geographical location, climate and stand description), showing sound geographical, climatic and forest vegetation coverages across China. The dataset is freely available at https://doi.pangaea.de/10.1594/PANGAEA.895244 for noncommercial scientific applications, which fills an important regional gap in global biomass datasets and provides key parameters for biomass estimation in forest inventory and carbon accounting in China.

Download Full-text

Allometric biomass equations for young trees of four broadleaved species in Albania

New Zealand Journal of Forestry Science ◽

10.33494/nzjfs492019x51x ◽

2019 ◽

Vol 49 ◽

Author(s):

Erion Istrefi ◽

Elvin Toromani ◽

Nehat Collaku ◽

Bashkim Thaci

Keyword(s):

Castanea Sativa ◽

Allometric Equations ◽

Biomass Estimation ◽

Regression Equations ◽

Growth Strategies ◽

Forest Stands ◽

Sweet Chestnut ◽

Reliable Predictor ◽

Biomass Equations ◽

Species Specific

Background: Biomass assessment of young forest stands is important because of their role in the carbon cycling. The aim of this study was to develop biomass equations for young broadleaved species growing in natural conditions in Albania. Methods: Five forest stands were investigated using circular sample plots. Diameter at breast height (DBH) and height (H) from 58 sampled trees ranging in age from 4 to 34 years old of Turkey oak (Quercus cerris L.), sweet chestnut (Castanea sativa Mill.), European hornbeam (Carpinus betulus L.) and manna ash (Fraxinus ornus L.) were measured in situ. Logarithmic regression equations were used and tested for their performance to estimate aboveground and tree-components biomass for each species using DBH, H and their combination DBH2 x H as predictors. Results: We found that DBH was a reliable predictor for estimation of aboveground and components biomass for young trees but the inclusion of height in biomass allometry did not improve the biomass estimation. We observed differences in scale (?0) and exponent (?1) coefficients of biomass models, not only between broadleaved species, but also among tree-components within species. Both coefficients were strongly species-specific and their values reflect differences in biomass stocking rate due to different growth strategies of each species in early development phases. Conclusions: Allometric equations to estimate aboveground and tree-component biomass appeared to be species-specific, meaning that such models are applicable for species growing at sites with similar ecological conditions. From the tree variables used, DBH was the most reliable predictor of aboveground and individual components biomass, whereas height proved to be a promising predictor for stand biomass. These allometric equations developed for young trees will improve the accuracy of current estimates of forest carbon stock in Albania.

Download Full-text

Xenohyla eugenioi Caramaschi, 1998 (Amphibia: Anura: Hylidae): geographic distribution and new record from the state of Sergipe, northeastern Brazil

Check List ◽

10.15560/11.5.1744 ◽

2015 ◽

Vol 11 (5) ◽

pp. 1744

Author(s):

Rony Peterson Santos Almeida ◽

Hugo Andrade ◽

Ulisses Caramaschi ◽

Eduardo José dos Reis Dias

Keyword(s):

Atlantic Forest ◽

Geographic Distribution ◽

New Record ◽

First Record ◽

The State ◽

Northeastern Brazil ◽

Southeastern Brazil ◽

Central State ◽

South Central ◽

Straight Line

The genus Xenohyla is currently composed of two species, X. truncata (Izecksohn, 1959) and Xenohyla eugenioi Caramaschi, 1998. Both species are usually found inside bromeliads; X. truncata inhabits the restingas of the state of Rio de Janeiro, southeastern Brazil, and X. eugenioi transitional areas between the Atlantic Forest and the Caatinga biomes in northeastern Brazil. We report the first record of X. eugenioi in the state of Sergipe, expanding the species geographic distribution by 423.4 km in a straight line in relation to its type locality, in the municipality of Maracás, south-central state of Bahia, Brazil.

Download Full-text

Uphill Battle: Forest Rights and Restoration on Podu Landscapes in Keonjhar, Odisha

Journal of South Asian Development ◽

10.1177/09731741211057333 ◽

2022 ◽

pp. 097317412110573

Author(s):

Laura M. Valencia

Keyword(s):

Political Ecology ◽

Forest Restoration ◽

Global Climate ◽

Forest Policy ◽

Biodiversity Loss ◽

Plantation Forest ◽

Tree Plantation ◽

Middle Income ◽

Forest Landscape Restoration ◽

Forest Tenure

In response to the global climate emergency and biodiversity loss, environmental advocates promote ecological restoration of millions of hectares of the world’s degraded forest lands. Lands of high value to restoration are home to nearly 300 million people, including 12% of low- and middle-income country populations. In this article, I respond to calls for greater empirical investigation into the social impacts of forest landscape restoration. Through spatial and ethnographic analysis of forest restoration in Keonjhar, Odisha (India), I show that state-led afforestation efforts contradict a decade of forest tenure reform which sought to decentralize and decolonize forest governance. I explore how state-led efforts ignore (and inhibit) the continued protagonism of forest-dwelling communities in forest regeneration on their customary lands. Weaving accounts from 1992 onwards across six villages and 22 plantations, I characterize state strategies as an ‘uphill battle’: by systematically selecting shifting cultivation (podu) uplands for enclosure and tree plantation, forest agencies contribute to a lose-lose situation where neither forest restoration nor forest rights are realized. Investigating this process from colonial forest policy to the present, I leverage a critical political ecology perspective that supports calls for rights-based restoration.

Download Full-text

Engaging People for Large-Scale Forest Restoration: Governance Lessons from the Atlantic Forest of Brazil

The Atlantic Forest ◽

10.1007/978-3-030-55322-7_18 ◽

2021 ◽

pp. 389-402

Author(s):

Ludmila P. de Siqueira ◽

Anazélia M. Tedesco ◽

Ricardo R. Rodrigues ◽

Rafael B. Chaves ◽

Natália C. B. Albuquerque ◽

...

Keyword(s):

Atlantic Forest ◽

Forest Restoration ◽

Large Scale

Download Full-text

AVALIAÇÃO DA DIVERSIDADE DE ESPÉCIES NATIVAS PRODUZIDAS NOS VIVEIROS FLORESTAIS DO ESTADO DO RIO DE JANEIRO

FLORESTA ◽

10.5380/rf.v44i3.31910 ◽

2014 ◽

Vol 44 (3) ◽

pp. 369 ◽

Cited By ~ 1

Author(s):

Jorge Makhlouta Alonso ◽

Paulo Sérgio Dos Santos Leles ◽

Telmo Borges Silveira Filho ◽

Carlos Alberto Bernardo Mesquita ◽

Marcos Lima Pereira ◽

...

Keyword(s):

Atlantic Forest ◽

Rio De Janeiro ◽

Native Species ◽

Forest Restoration ◽

The State ◽

Forest Species ◽

Mata Atlântica ◽

Production Manager ◽

Mata Atlantica ◽

Forest Nurseries

O objetivo deste trabalho foi avaliar a diversidade de espécies florestais nativas produzidas nos viveiros do estado do Rio de Janeiro. O levantamento e diagnóstico foram realizados durante os meses de fevereiro, março e abril de 2010, sendo incluídos os viveiros que produziam mudas de espécies florestais da Mata Atlântica. O trabalho de campo consistiu em visitas a 70 viveiros florestais, nos quais foi requerida a lista das espécies produzidas e realizada entrevista com o responsável, sendo preenchido um questionário englobando diversos temas relacionados à produção de mudas. Foram observadas 277 espécies florestais nativas da Mata Atlântica sendo produzidas nos viveiros, que, em média, trabalham com 56 espécies nativas. A diversidade total de espécies florestais da Mata Atlântica produzidas nos viveiros do Estado do Rio de Janeiro é baixa, assim como a diversidade média, já que mais da metade dos viveiros trabalha com uma listagem de 50 ou menos espécies, número insuficiente considerando a diversidade de espécies florestais presentes nas diferentes formações vegetais do estado.Palavras-chave: Mudas florestais; restauração florestal; Mata Atlântica. AbstractAssessment of diversity of native species produced in forest nurseries of Rio de Janeiro State. The objective of this paper was to evaluate the diversity of native species produced by nurseries in the State of Rio de Janeiro. The diagnostic and survey were conducted during the months of February, March and April of the year 2010, the research included all nurseries that produced seedlings of Atlantic Forest species. The fieldwork consisted of visits to the 70 surveyed nurseries, in which a list of the species produced in the nursery was requested and the seedling production manager was interviewed, filling in a questionnaire covering various topics related to seedlings production. We observed 277 forest species native from the Atlantic Forest produced in the nurseries. In average, the nurseries produce 56 different native species. The total diversity of native species produced in the State of Rio de Janeiro is low, as well as the mean diversity, since more than half of the nurseries work with a list of 50 or fewer species, what is insufficient considering the diversity of forest species that occur in the different vegetation types of the state.Keywords: Forest seedlings; forest restoration; Atlantic Forest.

Download Full-text

The condition of forest stands on afforested agricultural land in the Orlické hory Mts

Journal of Forest Science ◽

10.17221/27/2016-jfs ◽

2017 ◽

Vol 63 (No. 1) ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

Cukor Jan ◽

Baláš Martin ◽

Kupka Ivo ◽

Tužinský Marek

Keyword(s):

Agricultural Land ◽

High Growth ◽

Dry Mass ◽

Growth Potential ◽

Forest Stands ◽

Tree Biomass ◽

Humus Layer ◽

The Status ◽

Spruce Stands ◽

High Growth Potential

The paper presents an evaluation of the growth of newly established forest stands on former agricultural land and furthermore describes the state of the upper part of the soils in these stands in comparison with neighbouring grassland in the Orlické hory Mountains. The new Norway spruce stands show an extremely high growth potential, usually significantly higher in comparison with areas forested for more generations/rotations. The formation of the surface humus layer also showed fast progress, the amount of dry mass of soil organic matter reaching values almost typical of permanently forested sites. The soils of newly afforested lands tend to resemble the status of forest soil – there was observed a process of acidification and nutrient depletion, probably connected with accumulation of the tree biomass.

Download Full-text

Local Participation in Forest Watershed Management: Design and Analysis of Experiences in Water Supply Micro-Basins with Forest Plantations in South Central Chile

Forests ◽

10.3390/f10070580 ◽

2019 ◽

Vol 10 (7) ◽

pp. 580 ◽

Cited By ~ 2

Author(s):

Victor Vargas ◽

Noelia Carrasco ◽

Camila Vargas

Keyword(s):

Watershed Management ◽

Local Knowledge ◽

Global Climate ◽

Water Governance ◽

Local Participation ◽

South Central ◽

Forest Watershed ◽

First Case ◽

Main Challenge ◽

Collective Creation

The joint “International Forests and Water Conference 2018” highlighted among its main conclusions the need to involve the viewpoint and participation of local communities in the management and monitoring of forest watersheds. This topic constitutes a strategic and transverse challenge for the sciences and public policies in the current context of global climate change. As a contribution to this challenge, the aim of this research was to qualitatively describe and analyze a territorial intervention model based on two case studies. Both involve stakeholders from the public sector, forest companies, and rural communities within the framework of implementing a participatory process at a local scale. The first case study was based on the collective creation of a set of indicators for local water monitoring. The second case, through the incorporation of the social and local dimension, culminated in the collective creation of a forest watershed management guide. The research hypothesis was that the inclusion of stakeholders and local knowledge in forest watershed management is essential to create and/or strengthen local abilities that ensure the involvement of communities in water governance, surpassing the current informative and consultative approaches. The research methodology was qualitative, and the data collection strategies were focused on the compilation of the process, the participatory work, and gathering diverse local knowledge. The data analysis included content tabulation, including both local indicators and ones extracted from the guide. In both cases, the systematization process and the main empirical findings were included. Among the findings, it was observed that both the pilot of local indicators and the design of the forest watershed management guide confirmed that the main challenge of local participation is the effective inclusion of local knowledge in water governance. This ethical and methodological challenge must be approached more rigorously and with more commitment.

Download Full-text