Total organic carbon and the humic fractions of the soil organic matter in silvopastoral system

被引:6
作者
Marques da Silva, Jefferson Rogerio [1 ]
Ensinas, Simone Candido [2 ]
Barbosa, Giselle Feliciani [1 ]
Oliveira Rezende, Joao Victor [1 ]
Vechetin Barreta, Paulo Gabriel [1 ]
Zuffo, Alan Mario [3 ]
机构
[1] Univ Estadual Mato Grosso do Sul, Cassilandia, MS, Brazil
[2] Univ Estadual Mato Grosso do Sul, Gloria De Dourados, MS, Brazil
[3] Univ Estadual Mato Grosso do Sul, Chapadao Do Sul, MS, Brazil
来源
REVISTA BRASILEIRA DE CIENCIAS AGRARIAS-AGRARIA | 2020年 / 15卷 / 02期
关键词
fractionation; land use; management systems; CULTIVATION; ATTRIBUTES; PASTURE; STOCKS;
D O I
10.5039/agraria.v15i2a6874
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
In agricultural production systems soil organic matter (SOM) is of paramount importance when assessing soil quality. Therefore, the objective of this study was to quantify the total organic carbon (TOC) and the humic fractions of the soil organic matter in silvopastoral system (SS) and to compare them with the conventional pasture system (CP) and a native vegetation area of Cerrado (NV). In the SS, soil samples were collected at distances 2.5, 5.0, 7.5 and 10 m from the eucalyptus row. Soil samples in each system were collected in the 0-10, 10-20 and 20-30 cm layers. The following parameters were determined: TOC, organic carbon associated with minerals (OCam), particulate organic carbon (OCp) and carbon of the humic soil substances. Carbon management index (CMI) and the sum of humic substances (SHs) were also calculated. SS was able to promote larger increases in the TOC, OCam and carbon stocks in the humic fractions when compared to CP and was also able to increase OCp and CMI values in depth. Soil sampling distances in the silvopastoral system had no significant influence on the changes in total carbon stocks and short-term SOM fractions. Furthermore, the land use with two years of SS implementation is not yet able to provide for most of the evaluated attributes with values equal to or higher than the soil with NV.
引用
收藏
页数:6
相关论文
共 32 条
[1]  
[Anonymous], 1948, CLIMATOLOGIA
[2]  
[Anonymous], 2013, EMBRAPA CNPS
[3]  
Baldotto Marihus Altoé, 2015, Rev. Ceres, V62, P301, DOI 10.1590/0034-737X201562030010
[4]  
Balin N. M., 2017, Scientia Agraria, V18, P85
[5]  
Bernardino F. S., 2009, Pesquisa Florestal Brasileira, P77
[6]   SOIL CARBON FRACTIONS BASED ON THEIR DEGREE OF OXIDATION, AND THE DEVELOPMENT OF A CARBON MANAGEMENT INDEX FOR AGRICULTURAL SYSTEMS [J].
BLAIR, GJ ;
LEFROY, RDB ;
LISE, L .
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 1995, 46 (07) :1459-1466
[7]   Soil Carbon Stocks under Productive and Degraded Brachiaria Pastures in the Brazilian Cerrado [J].
Braz, Sergio P. ;
Urquiaga, Segundo ;
Alves, Bruno J. R. ;
Jantalia, Claudia P. ;
Guimaraes, Ana Paula ;
dos Santos, Camila A. ;
dos Santos, Sashia C. ;
Machado Pinheiro, Erika F. ;
Boddey, Robert M. .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2013, 77 (03) :914-928
[8]   PARTICULATE SOIL ORGANIC-MATTER CHANGES ACROSS A GRASSLAND CULTIVATION SEQUENCE [J].
CAMBARDELLA, CA ;
ELLIOTT, ET .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1992, 56 (03) :777-783
[9]  
Campanha M.M., 2009, TEORES ESTOQUES CARB
[10]  
Cordeiro L. A. M., 2015, CADERNOS CIENCIA TEC, V32, P15