Soil C and Al availability in tropical single and mixed-species of Eucalyptus sp. and Acacia mangium plantations

Aim of the study: The major objective of this study was to estimate the biomass increment and carbon (C) storage of the main ecosystem components in an age-sequence of three Acacia mangium plantation stands.Area of study: Chang Riec Historical - Cultural Forest, Southeastern region, Vietnam.Material and methods: In order to assess the biomass of different tree components, 36 trees with diameter at breast height ranging from 13.38 to 22.87 cm were harvested from the different aged stands. Biomasses of understory (shrubs and herbs), and litter were also determined. Carbon storage in the trees and understory biomass, litter, and mineral soil (0-50 cm) were determined by analyzing the C content of each compartment.Main results: The biomass in trees, understory vegetation, litter, and ecosystem increased with stand age. Soil C represented 61.99% of the total, aboveground tree biomass C made up 26.73%, belowground tree biomass C accounted for 7.01%, and litter comprised 2.96%, whereas only a small amount (1.30%) was associated with understory vegetation. The average C content of total tree (47.97%) was higher than those of understory and litter. Soil organic C stock in the top 50 cm depth in 4-, 7- and 11-year-old stands of A. mangium were 86.86, 126.88 and 140.94 Mg. C ha-1 respectively. Soil C concentration decreased continually with increasing soil depth. Total C storage of three planted forests ranged from 131.36 to 255.86 Mg. C ha-1, of which 56.09 - 67.61% of C storage was in the soil and 26.88 - 40.40% in the trees.Research highlights: These results suggest that A. mangium is a promising afforestation tree species with fast growing, high biomass accumulation and high C sequestration potential.Keywords: Acacia mangium plantations; Biomass; Ecosystem carbon storage; Age-sequence; Vietnam.

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Nitrogen cycling in monospecific and mixed-species plantations of Acacia mangium and Eucalyptus at 4 sites in Brazil

Forest Ecology and Management ◽

10.1016/j.foreco.2018.12.055 ◽

2019 ◽

Vol 436 ◽

pp. 56-67 ◽

Cited By ~ 10

Author(s):

M. Voigtlaender ◽

C.B. Brandani ◽

D.R.M. Caldeira ◽

F. Tardy ◽

J.-P. Bouillet ◽

...

Keyword(s):

Nitrogen Cycling ◽

Acacia Mangium ◽

Mixed Species

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Production and carbon allocation in monocultures and mixed-species plantations of Eucalyptus grandis and Acacia mangium in Brazil

Tree Physiology ◽

10.1093/treephys/tps041 ◽

2012 ◽

Vol 32 (6) ◽

pp. 680-695 ◽

Cited By ~ 50

Author(s):

Y. Nouvellon ◽

J.-P. Laclau ◽

D. Epron ◽

G. Le Maire ◽

J.-M. Bonnefond ◽

...

Keyword(s):

Carbon Allocation ◽

Eucalyptus Grandis ◽

Acacia Mangium ◽

Mixed Species

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Mixed-species plantations of Acacia mangium and Eucalyptus grandis in Brazil

Forest Ecology and Management ◽

10.1016/j.foreco.2007.10.050 ◽

2008 ◽

Vol 255 (12) ◽

pp. 3918-3930 ◽

Cited By ~ 81

Author(s):

J.P. Bouillet ◽

J.P. Laclau ◽

J.L.M. Gonçalves ◽

M.Z. Moreira ◽

P.C.O. Trivelin ◽

...

Keyword(s):

Eucalyptus Grandis ◽

Acacia Mangium ◽

Mixed Species

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Evaluation of an Acacia mangium Provenance Trial after Seven Years, on the Ibi - Batéké Plateau, Democratic Republic of the Congo

Tropicultura - Numéro 3 ◽

10.25518/2295-8010.1740 ◽

2021 ◽

Author(s):

Etienne Yusufu Kachaka ◽

Vincent Poirier ◽

Alison D. Munson ◽

Damase P. Khasa

Keyword(s):

Democratic Republic ◽

Direct Method ◽

Acacia Mangium ◽

Tree Height ◽

The Philippines ◽

Soil C ◽

Carbon And Nitrogen ◽

Nitrogen Concentrations ◽

Republic Of The Congo ◽

C And N

This study reports on the evaluation of 46 Acacia mangium provenances and varieties, which were planted in 2006 on the Ibi-Batéké Plateau, Democratic Republic of the Congo. After seven years, tree height and diameter, biomass and carbon stocks of the 46 Acacia mangium provenances, together with soil carbon and nitrogen concentrations, were compared with savannah soils in which Acacia was no present. Heights and diameters of 20 to 25 trees per provenance were measured. Carbon in the biomass was determined by the direct method. In total, 25 trees were harvested and weighed for each carbon compartment (leaves, branches, litter, trunks and roots). Ninety soil samples were collected at three different depths in the provenance plots and on the savannah and analyzed for their C and N concentrations. There were differences in height and diameter growth and in accumulated carbon among trees of different origins (provenances). Finally, soil C and N differed under different provenances, and with depth. Carbon and nitrogen tended to decrease with depth. The results of the study revealed better performance for provenances originating from Papua New Guinea, Australia, Malaysia, Vietnam, China, Fiji and the Philippines.

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Mixed-species plantations of Acacia mangium and Eucalyptus grandis in Brazil

Forest Ecology and Management ◽

10.1016/j.foreco.2007.10.049 ◽

2008 ◽

Vol 255 (12) ◽

pp. 3905-3917 ◽

Cited By ~ 92

Author(s):

J.-P. Laclau ◽

J.-P. Bouillet ◽

J.L.M. Gonçalves ◽

E.V. Silva ◽

C. Jourdan ◽

...

Keyword(s):

Eucalyptus Grandis ◽

Acacia Mangium ◽

Mixed Species

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Fate of Acacia mangium in eucalypt mixed-species plantations during drought conditions in the Congolese coastal plains

Bosque (Valdivia) ◽

10.4067/s0717-92002018000100131 ◽

2018 ◽

Vol 39 (1) ◽

pp. 131-136 ◽

Cited By ~ 1

Author(s):

Lydie-Stella Koutika ◽

Louis Mareschal ◽

Sonia Rudowsky

Keyword(s):

Acacia Mangium ◽

Coastal Plains ◽

Mixed Species ◽

Drought Conditions

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Microbial biomass and activity in litter during the initial development of pure and mixed plantations of Eucalyptus grandis and Acacia mangium

Revista Brasileira de Ciência do Solo ◽

10.1590/s0100-06832013000100008 ◽

2013 ◽

Vol 37 (1) ◽

pp. 76-85 ◽

Cited By ~ 12

Author(s):

Daniel Bini ◽

Aline Fernandes Figueiredo ◽

Mylenne Cacciolari Pinheiro da Silva ◽

Rafael Leandro de Figueiredo Vasconcellos ◽

Elke Jurandy Bran Nogueira Cardoso

Keyword(s):

Microbial Biomass ◽

Microbial Activity ◽

Eucalyptus Grandis ◽

Acacia Mangium ◽

Soil Nutrient ◽

Microbial Biomass C ◽

Senescent Leaf ◽

Soil C ◽

Nutrient Contents ◽

Leaf Drop

Studies on microbial activity and biomass in forestry plantations often overlook the role of litter, typically focusing instead on soil nutrient contents to explain plant and microorganism development. However, since the litter is a significant source of recycled nutrients that affect nutrient dynamics in the soil, litter composition may be more strongly correlated with forest growth and development than soil nutrient contents. This study aimed to test this hypothesis by examining correlations between soil C, N, and P; litter C, N, P, lignin content, and polyphenol content; and microbial biomass and activity in pure and mixed second-rotation plantations of Eucalyptus grandis and Acacia mangium before and after senescent leaf drop. The numbers of cultivable fungi and bacteria were also estimated. All properties were correlated with litter C, N, P, lignin and polyphenols, and with soil C and N. We found higher microbial activity (CO2 evolution) in litter than in soil. In the E. grandis monoculture before senescent leaf drop, microbial biomass C was 46 % higher in litter than in soil. After leaf drop, this difference decreased to 16 %. In A. mangium plantations, however, microbial biomass C was lower in litter than in soil both before and after leaf drop. Microbial biomass N of litter was approximately 94 % greater than that of the soil in summer and winter in all plantations. The number of cultivable fungi and bacteria increased after leaf drop, especially so in the litter. Fungi were also more abundant in the E. grandis litter. In general, the A. mangium monoculture was associated with higher levels of litter lignin and N, especially after leaf drop. In contrast, the polyphenol and C levels in E. grandis monoculture litter were higher after leaf drop. These properties were negatively correlated with total soil C and N. Litter in the mixed stands had lower C:N and C:P ratios and higher N, P, and C levels in the microbial biomass. This suggests more effective nutrient cycling in mixed plantations in the long term, greater stimulation of microbial activity in litter and soil, and a more sustainable system in general.

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