Why does carbon increase in highly weathered soil under no-till upon lime and gypsum use?

被引:38
作者
Inagaki, Thiago Massao [1 ]
de Moraes Sa, Joao Carlos [2 ]
Caires, Eduardo Favero [2 ]
Potma Goncalves, Daniel Ruiz [2 ]
机构
[1] Tech Univ Munich, Chair Soil Sci, Inst Adv Study, Email Ramann Str 2, D-85354 Freising Weihenstephan, Bayern, Germany
[2] Univ Estadual Ponta Grossa, Dept Soil Sci & Agr Engn, Av Carlos Cavalcanti 4748,Campus Uvaranas, BR-84030900 Ponta Grossa, Parana, Brazil
关键词
Carbon sequestration; Soil biology; Acid soils; Soil organic matter; Soil correction; Incubation; PERMANGANATE-OXIDIZABLE CARBON; ORGANIC-MATTER POOLS; MAIZE YIELD; SURFACE; FERTILIZATION; SYSTEM; FERTILITY; RESIDUES; BIOMASS; STOCKS;
D O I
10.1016/j.scitotenv.2017.04.234
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Field experiments have been used to explain how soil organic carbon (SOC) dynamics is affected by lime and gypsum applications, however, how SOC storage occurs is still debatable. We hypothesized that although many studies conclude that Ca-based soil amendments such as lime and gypsum may lead to SOC depletion due to the enhancement of microbial activity, the same does not occur under conservation agriculture conditions. Thus, the objective of this study was to elucidate the effects of lime and gypsum applications on soil microbial activity and SOC stocks in a no-till field and in-a laboratory incubation study simulating no-till conditions. The field experiment was established in 1998 in a clayey Oxisol in southern Brazil following a completely randomized blocks design with a split-plot arrangement and three replications. Lime and gypsum were surface applied in 1998 and reapplied in 2013. Undisturbed soil samples were collected before the treatments reapplications, and one year after. The incubation experiment was carried out during 16 months using these samples adding crop residues on the soil surface to simulate no-till field conditions. Lime and gypsum applications significantly increased the labile SOC stocks, microbial activity and soil fertility attributes in both field and laboratory experiments. Although the microbial activity was increased, no depletion of SOC stocks was observed in both experiments. Positive correlations were observed between microbial activity increase and SOC gains. Labile SOC and Ca2+ content increase leads to forming complex with mineral soil fractions. Gypsum applications performed a higher influence on labile SOC pools in the field than in the laboratory experiment, which may be related to the presence of active root system in the soil profile. We conclude that incubation experiments using lime and gypsum in undisturbed samples confirm that soil microbial activity increase does not deplete SOC stocks under conservation agriculture. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:523 / 532
页数:10
相关论文
共 46 条
[11]   Optimizing Nitrogen Use Efficiency for No-Till Corn Production by Improving Root Growth and Capturing NO3-N in Subsoil [J].
Caires, Eduardo F. ;
Zardo Filho, Renato ;
Barth, Gabriel ;
Joris, Helio A. W. .
PEDOSPHERE, 2016, 26 (04) :474-485
[12]   Lime application in the establishment of a no-till system for grain crop production in Southern Brazil [J].
Caires, EF ;
Barth, G ;
Garbuio, FJ .
SOIL & TILLAGE RESEARCH, 2006, 89 (01) :3-12
[13]   Lime-induced loss of soil organic carbon and effect on aggregate stability [J].
Chan, KY ;
Heenan, DP .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1999, 63 (06) :1841-1844
[14]   EFFECTS OF SURFACE APPLICATION OF CALCIUM-MAGNESIUM SILICATE AND GYPSUM ON SOIL FERTILITY AND SUGARCANE YIELD [J].
Costa Crusciol, Carlos Alexandre ;
Foltran, Rodrigo ;
Rossato, Otavio Bagiotto ;
McCray, James Mabry ;
Rossetto, Raffaella .
REVISTA BRASILEIRA DE CIENCIA DO SOLO, 2014, 38 (06) :1843-1854
[15]   Permanganate Oxidizable Carbon Reflects a Processed Soil Fraction that is Sensitive to Management [J].
Culman, Steven W. ;
Snapp, Sieglinde S. ;
Freeman, Mark A. ;
Schipanski, Meagan E. ;
Beniston, Josh ;
Lal, Rattan ;
Drinkwater, Laurie E. ;
Franzluebbers, Alan J. ;
Glover, Jerry D. ;
Grandy, A. Stuart ;
Lee, Juhwan ;
Six, Johan ;
Maul, Jude E. ;
Mirksy, Steven B. ;
Spargo, John T. ;
Wander, Michelle M. .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2012, 76 (02) :494-504
[16]   Temperature and Moisture Effects on Microbial Biomass and Soil Organic Matter Mineralization [J].
Curtin, Denis ;
Beare, Michael H. ;
Hernandez-Ramirez, Guillermo .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2012, 76 (06) :2055-2067
[17]   Soil-Specific Inventories of Landscape Carbon and Nitrogen Stocks under No-Till and Native Vegetation to Estimate Carbon Offset in a Subtropical Ecosystem [J].
de Moraes Sa, Joao Carlos ;
dos Santos, Josiane Burkner ;
Lal, Rattan ;
de Moraes, Anibal ;
Tivet, Florent ;
Machado Sa, Marcia Freire ;
Briedis, Clever ;
Ferreira, Ademir de Oliveira ;
Eurich, Guilherme ;
Farias, Anderson ;
Friedrich, Theodor .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2013, 77 (06) :2094-2110
[18]  
EMBRAPA, 2013, SIST BRAS CLASS SOL
[19]  
Fernandes M.S., 2006, Nutric ao mineral de plantas, P115
[20]  
Ferreira, 2008, PROGRAMA SISVAR VERS