Simulating SOC changes in 11 land use change chronosequences from the Brazilian Amazon with RothC and Century models

Cerri, Carlos Eduardo Pellegrino; Easter, Mark; Killian, K.; Coleman, Kevin; Bernoux, Martial; Falloon, Pete; Powlson, D. S.; Batjes, N.H.; Milne, E.; Cerri, Carlos C.

doi:10.1016/j.agee.2007.01.007

Cited by 92 publications

(68 citation statements)

References 37 publications

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“…Pour évaluer le stock de carbone organique des sols selon la superficie, trois paramètres doivent être estimés afin de déterminer la quantité de l'élément q dans l'horizon i (Peng et al, 2000 ;Cerri et al, 2007a ;Evans et al, 2001 ;Belkacem et al, 1998) :…”

Section: Calcul Du Stock De Carbone Dans Le Solunclassified

Estimation du stock de carbone organique dans la chênaie verte du Moyen Atlas marocain

Boulmane

Makhloufi

Bouillet³

et al. 2010

Acta Botanica Gallica

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Résumé.-La présente étude a été réalisée dans la chênaie verte du Moyen Atlas central marocain (Tafachna et Reggada), avec pour objectif la détermina-tion du stock de carbone organique dans les différentes couches des sols, de la litière et des différentes composantes de l'arbre (bois du tronc, écorce, branches, rameaux et feuilles). Il en ressort que le stock de carbone total (SCOT) dans cet écosystème est de 145 t C/ha pour Tafachna et 114 t C/ha pour Reggada. Le stock de carbone organique des sols (SCOS) représente plus de 50% du SCOT. Le SCOS varie considérablement avec la densité du peuplement, avec 80 t C/ha pour Tafachna (5192 pieds/ha) et 56 t C/ha pour Reggada (1584 pieds/ha). Au contraire, le stock de carbone dans la biomasse arborée (aérienne et racinaire) est plus important dans Tafachna que dans Reggada (64 t C/ha pour Tafachna et 58 t C/ha pour Reggada). Plus de 80% du stock de carbone organique des sols sont emmagasinés dans les trente premiers centimètres, où il est de l'ordre de 63 t/ha (43% du SCOT) pour Tafachna et 47 t/ha (41% du SCOT) pour Reggada.Mots clés : minéralisation -carbone organique -biomasse -sol -litière.Abstract.-The present study was carried out in Quercus ilex forest of the Middle Moroccan Central Atlas (Tafachna and Reggada). It aims at the determination of the organic carbon stock in the various layers of the soils, the litter and the various components of the tree (wood of the trunk, bark, branches, smal branches and leaves). It comes out from this study that the stock of total carbon (SCOT) in the ecosystem of the holm oak is of 145 t C/ha for Tafachna and 114 t C/ha for Reggada. The organic carbon stock of soils (SCOS) represents more than 50% of the SCT. This stock varies considerably with the density of peuplement with 80 t C/ha for Tafachna (5192 species/ha) and 56 t C/ha for Reggada (1584 species/ha). Contrary to the carbon stock in the phytomass which is equal 64 t C/ha for Tafachna and 58 t C/ha for Reggada. More than 80% of the organic carbon stock of the soils is stored in the first 30 centimeters, that is about 63 t/ha (43% of the SCOT) for Tafachna and 47 t/ha (41% of the SCOT) for Reggada.

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Section: Calcul Du Stock De Carbone Dans Le Solunclassified

Estimation du stock de carbone organique dans la chênaie verte du Moyen Atlas marocain

Boulmane

Makhloufi

Bouillet³

et al. 2010

Acta Botanica Gallica

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“…First, regression equations were used to estimate the aboveground tree volume and for this the circumference at breast height (C130 in cm) was used (Rapp et al 1999, Davi et al 2005). The equations were performed with SAS™ (JMP © 9.0.0 -SAS Institute, Cary, NC, USA) and included polynomial and logarithmic relationships with one (circumference C130) or two (circumference C130 and height H) entries (see Tab.…”

Section: Data Handling and Statisticsmentioning

confidence: 99%

Carbon storage in degraded cork oak (Quercus suber) forests on flat lowlands in Morocco

Oubrahim¹,

Boulmane²,

Bakker³

et al. 2016

iForest

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The present study aims to quantify the carbon stored in a degraded cork oak (Quercus suber L.) ecosystem in the north west of Morocco, in view of potential management implications. To this end, carbon stocks were evaluated in the first 100 cm of the soil, the cork oak trees, and the understorey species (both above-and belowground). Results show that the total carbon stocks in the cork oak ecosystem ranges from 65 to 237 Mg ha -1 with a mean value of 121 Mg ha -1 . The first 100 cm of the soil (including the forest floor) represents the largest carbon pool (~51% of the total organic carbon) of the ecosystem. Tree biomass (above-and belowground tissues of cork oak) represents the second largest pool (47%), whereas the contribution of the understorey is less than 2%. Within the first 100 cm of the soil, over 87% of all the soil organic carbon is situated in the first 40 cm of the soil depth. The amount of carbon stored here ranges from 30 to 110 Mg ha -1 and these organic carbon stocks vary considerably with the stand basal area of the cork oak (R 2 = 0.82). In practice, the carbon stocks of the different pools considered are strongly correlated with the stand density of the cork oak stands. In the semi-arid forest ecosystems of our study, management prescriptions aiming at increasing the standing biomass of the cork oak should thus considerably contribute, both directly through tree biomass and indirectly through increased soil organic matter, to efficient carbon sequestration.

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“…produção, se espera que os benefícios de adoção da prática sejam percebidos em médio e em longo prazos (Cerri et al, 2007). Isto se deve ao fato de que a utilização de coberturas vegetais viva e morta influencia a dinâmica biológica do solo (Franchini et al, 2007), com reflexos positivos sobre a fertilidade global, especialmente nos teores de matéria orgânica do solo após alguns anos de uso do sistema plantio direto (Maia et al, 2013).…”

Section: Resultsunclassified

“…A inserção de plantas de cobertura atua na promoção da ciclagem de nutrientes no agroecossistema (Boer et al, 2007), tornando-os mais disponíveis para as culturas agrícolas (Ziech et al, 2015). Na região Amazônica, os processos de mineralização e de perda da matéria orgânica ocorrem de forma intensa, devido às elevadas temperaturas associadas a altos índices pluviométricos (Cerri et al, 2007).…”

Section: Methodsunclassified

Plantas De Cobertura Sobre Atributos Agronômicos Do Milho Na Região Sudoeste Da Amazônia

Aker¹,

PASSOS²,

MARCOLAN³

et al. 2017

RBMS

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RESUMO -O sistema plantio direto é uma estratégia sustentável de produção que preconiza a manutenção da cobertura vegetal como prática conservacionista do solo. Objetivou-se avaliar o efeito de plantas de cobertura sobre atributos fisiológicos e agronômicos do milho na região sudoeste da Amazônia. Foram avaliadas 15 estratégias de sucessões de culturas com o milho e a influência sobre o rendimento de biomassa, de grãos, altura de plantas e inserção da espiga, índice de espiga, massa de 100 grãos, teor foliar de nitrogênio e clorofilas total, a e b em plantas de milho.Observou-se efeito das plantas de cobertura sobre o rendimento de grãos, de biomassa fresca e seca, na massa de grãos e nos teores de clorofila. Os efeitos sobre os teores de clorofila foram mais pronunciados na clorofila b e nos estádios fenológicos finais da cultura. O feijão-de-porco promoveu as maiores produtividades de grãos (7.539,3 kg ha -1 ) e potencial de silagem (16,2 Mg ha -1 de biomassa seca). A adequada escolha das espécies que compõe um sistema de plantio direto é preponderante para o apropriado desempenho agronômico do milho na região sudoeste da Amazônia. Palavras-chave:Zea mays, intensificação ecológica, sustentabilidade, integração lavoura-pecuária, plantio direto. CROPPING SYSTEMS ON THE PERFORMANCE OF CORN PLANTS IN THE SOUTHWESTERN AMAZONABSTRACT-A sustainable strategy for agricultural systems is the use of cover crops in no-tillage systems, as a conservationist soil practice. This paper aimed to evaluate the short-term effects of different cover crops on some physiological and agronomic attributes of corn crop in the Southwestern Amazon region. The effects of 15 cover plants on the biomass and grains yield, plant height, ear insertion height, ear index, mass of 100 grains, leaf nitrogen content and a, b and total chlorophyll levels of corn plants were evaluated. A randomized complete block design was used with four replications. Grain yield, fresh and dry biomass yield, mass of 100 grains and chlorophyll content were affected by some cover crops. Jack bean promoted the highest grain yield (7,539.3 kg ha -1 ) and biomass yield (16.2 Mg ha -1 dry matter) among the options assessed. Cover crops provided different levels of total, a and b chlorophyll levels, on the corn plants. Some cover crops presented the potential to improve the agronomic performance of the succeeding corn crop in the Southwestern Amazon region. The proper agronomic performance of corn in a no-till system depends on the adequate choice of cover plants to compose the system. Sorgo, v.15, n.3, p. 531-542, 2016 RESUMO -O sistema plantio direto é uma estratégia sustentável de produção que preconiza a manutenção da cobertura vegetal como prática conservacionista do solo. Objetivou-se avaliar o efeito de plantas de cobertura sobre atributos fisiológicos e agronômicos do milho na região sudoeste da Amazônia. Foram avaliadas 15 estratégias de sucessões de culturas com o milho e a influência sobre o rendimento de biomassa, de grãos, altura de plantas e inserção da e...

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Simulating SOC changes in 11 land use change chronosequences from the Brazilian Amazon with RothC and Century models

Cited by 92 publications

References 37 publications

Estimation du stock de carbone organique dans la chênaie verte du Moyen Atlas marocain

Estimation du stock de carbone organique dans la chênaie verte du Moyen Atlas marocain

Carbon storage in degraded cork oak (Quercus suber) forests on flat lowlands in Morocco

Plantas De Cobertura Sobre Atributos Agronômicos Do Milho Na Região Sudoeste Da Amazônia

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