Soil carbon stock in balsa wood after fertilization strategies

The objective of this work was to evaluate whether balsa wood plantation and its fertilization can improve soil carbon stocks. Total carbon stocks in the soil-biomass system, at 0.0-0.30 m soil depths, were evaluated under three fertilization strategies, after three and seven years, and compared with carbon stocks from native forest and degraded pasture. At the highest fertilization level, balsa wood showed a carbon stock similar to that of the native forest (65.38 Mg ha^-1) and, after seven years, it increased carbon stock by 18% in the soil, and by 42% in the soil-biomass system.

Index terms:
Ochroma pyramidale; carbon sequestration; clean development mechanism; planted forest

Authorship

Sandro Marcelo Caravina

Universidade Federal de Mato Grosso, Programa de Pós-Graduação em Agronomia, Avenida Alexandre Ferronato, no 1.200, CEP 78557-267 Sinop, MT, Brazil. E-mail: caravinasandro@gmail.com, onafreddi@gmail.comUniversidade Federal de Mato GrossoBrazilSinop, MT, Brazil Universidade Federal de Mato Grosso, Programa de Pós-Graduação em Agronomia, Avenida Alexandre Ferronato, no 1.200, CEP 78557-267 Sinop, MT, Brazil. E-mail: caravinasandro@gmail.com, onafreddi@gmail.com

http://orcid.org/0000-0003-3765-6874

Maurel Behling

Embrapa Agrossilvipastoril, Rodovia MT-222, Km 2,5, Zona Rural, Caixa Postal 343, CEP 78550-970 Sinop, MT, Brazil. E-mail: maurel.behling@embrapa.br, cornelio.zolin@embrapa.br, ciro.magalhaes@embrapa.br, eduardo.matos@embrapa.brEmbrapa AgrossilvipastorilBrazilSinop, MT, Brazil Embrapa Agrossilvipastoril, Rodovia MT-222, Km 2,5, Zona Rural, Caixa Postal 343, CEP 78550-970 Sinop, MT, Brazil. E-mail: maurel.behling@embrapa.br, cornelio.zolin@embrapa.br, ciro.magalhaes@embrapa.br, eduardo.matos@embrapa.br

http://orcid.org/0000-0002-4191-5915

Cornélio Alberto Zolin ^**Corresponding author: cornelio.zolin@embrapa.br

http://orcid.org/0000-0003-3028-8722

Ciro Augusto de Souza Magalhães

Onã da Silva Freddi

Eduardo da Silva Matos

http://orcid.org/0000-0002-4861-703X

Júlio César Santin

Secretaria Municipal de Desenvolvimento Econômico, Meio Ambiente e Turismo de Guarantã do Norte, Avenida Guarantã do Norte, no 4.435, CEP 78520-000 Guarantã do Norte, MT, Brazil. E-mail: jcsantin222@gmail.comSecretaria Municipal de Desenvolvimento Econômico, Meio Ambiente e Turismo de Guarantã do NorteBrazilGuarantã do Norte, MT, Brazil Secretaria Municipal de Desenvolvimento Econômico, Meio Ambiente e Turismo de Guarantã do Norte, Avenida Guarantã do Norte, no 4.435, CEP 78520-000 Guarantã do Norte, MT, Brazil. E-mail: jcsantin222@gmail.com

*Corresponding author: cornelio.zolin@embrapa.br

SCIMAGO INSTITUTIONS RANKINGS

Figures | Tables | Formulas

Figures (1)
Tables (1)
Formulas (2)

Thumbnail

Figure 1.
Soil carbon stock and total carbon stock of biomass partitioned in aboveground and litter compartment, after seven years of planting of balsa wood for treatments with 0 (T0), 1 (T1), and 2 (T2) times the reference fertilization dose. Different letters above bars indicate difference by the Tukey’s test, at 5% probability.

Thumbnail

Table 1.
Soil carbon stock (SCs) of balsa wood at 0-0.30 m soil depths, under different nutritional management, after three and seven years of establishment.

Thumbnail

Figure 1. Soil carbon stock and total carbon stock of biomass partitioned in aboveground and litter compartment, after seven years of planting of balsa wood for treatments with 0 (T0), 1 (T1), and 2 (T2) times the reference fertilization dose. Different letters above bars indicate difference by the Tukey’s test, at 5% probability.

Table 1. Soil carbon stock (SCs) of balsa wood at 0-0.30 m soil depths, under different nutritional management, after three and seven years of establishment.

Age after planting	Treatment	SCs⁽¹⁾ (Mg ha^-1)	Bes	DP	SDF
			----------------------------------- p-value⁽²⁾ -----------------------------------
3 (years)	T0	59.18a (±3.61)	0.461	0.542	0.450
	T1	58.97a (±1.23)	0.311	0.196	0.099
	T2	61.50a (±1.77)	0.072	0.196	0.493
7 (years)	T0	60.82b (±4.28)	0.259	0.245	0.731
	T1	57.69b (±1.44)	0.630	0.216	0.158
	T2	66.66a (±1.08)	0.007	0.035	0.743
Averages (Mg ha^-1)		60.80 (±3.17)	56.56 (±1.45)	54.33	65.36

⁽¹⁾Means with equal letters, at each age, do not differ from each other by the Tukey’s test, at 5% probability. ⁽²⁾Significance of carbon stock comparison through the t-test between treatments and the reference area. Values in parentheses correspond to standard deviation. T0, without fertilization; T1, reference dose; T2, twice the reference dose; SCs, soil carbon stocks. Bes, before balsa wood establishment; DP, degraded pasture; DSF, deciduous secondary forest.

SCs = (C c \times B d \times L) \times 10^{- 1}

TSCs = Σ_{i = 1}^{n - 1} Cti + [Mtn - (Σ_{i = 1}^{n} Mti - Σ_{i = 1}^{n} Msi)] - Ctn

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Soil carbon stock in balsa wood after fertilization strategies

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[1] *Corresponding author: cornelio.zolin@embrapa.br