Humic fractions of soil carbon under agroforestry system in altitude swamp Pernambucano

被引:0
|
作者
Crespo, Cristiane Maria Goncalves [1 ]
Piscoya, Victor Casimiro [1 ]
Moraes, Alex Souza [1 ]
de Franca, Manoel Vieira [1 ]
Fernandes, Milton Marques [2 ,3 ]
Filho, Moacyr Cunha [1 ]
Cavalcante, Nayane Laisa de Lima [1 ]
de Melo, Robson Carlos Pereira [1 ]
Piscoya, Thaisa Folha [3 ]
Piscoya-Roncal, Jorge
Pereira, Ludmilla Morais [4 ,5 ]
Filho, Raimundo Rodrigues Gomes [2 ]
Holanda, Francisco Sandro Rodrigues [2 ]
Pedrotti, Alceu [2 ]
de Castro, Jamilie Brito [5 ]
Filho, Renisson Neponuceno de Araujo [5 ]
机构
[1] Univ Fed Rural Pernambuco, Recife, PE, Brazil
[2] Univ Fed Sergipe, Sao Cristovao, SE, Brazil
[3] Superintendencia Desenvolvimento Nordeste, Recife, PE, Brazil
[4] Univ Nacl Trujillo, Trujillo, Peru
[5] Univ Fed Tocantins, Gurupi, TO, Brazil
来源
CIENCIA FLORESTAL | 2024年 / 34卷 / 01期
关键词
: Soil organic matter; Fulvic acid; Humic acid; Humine; ORGANIC-MATTER FRACTIONS; TILLAGE; STOCKS;
D O I
10.5902/1980509865061
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
MOS (soil organic matter) is a natural carbon reservoir, and divided into different stages of decomposition according to its solubility and structural complexity. In view of this context, this work aimed to quantify the carbon content in the humic fractions of the soil organic matter under an agroforestry system in three toposequences in the swamp of altitude in Pernambuco, Brazil. The study was carried out on the Yaguara farm, and the studied areas were native forest and three toposequences of agroforestry system. Soil samples were collected in trenches 1.5 x 1.5 m, at depths 0-20, 20-40 and 40-60 cm, with four replications. The carbon concentrations in the humic fractions of the soil decreased with increasing depth. The area with agroforestry system had the highest concentrations of carbon in the humic fractions. The stocks of humic fractions found in the agroforestry system area showed higher average values in the top area 5.62, 9.72 and 22.53 Mg ha( -1) in relation to native forest 4.84, 8.28 and 19.20 Mg ha (-1), respectively for fulvic acid, humic acid and humine. Among the evaluated areas, the soil with agroforestry system top area has great potential to increase the carbon storage in the humic fractions of the soil.
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页数:19
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