@article{fdi:010035590,
  title = {{C}ropping systems, carbon sequestration and erosion in {B}razil, a review},
  author = {{B}ernoux, {M}artial and {C}erri, {C}.{C}. and {C}erri, {C}.{E}.{P}. and {N}eto, {M}.{S}. and {M}etay, {A}. and {P}errin, {A}nne-{S}ophie and {S}copel, {E}. and {R}azafimbelo, {T}antely and {B}lavet, {D}idier and {P}iccolo, {M}.{D}.{C}. and {P}avei, {M}. and {M}ilne, {E}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}oils represent a large carbon pool, approximately 1500 {G}t, which is equivalent to almost three times the quantity stored in terrestrial biomass and twice the amount stored in the atmosphere. {A}ny modification of land use or land management can induce variations in soil carbon stocks, even in agricultural systems that are perceived to be in a steady state. {T}illage practices often induce soil aerobic conditions that are favourable to microbial activity and may lead to a degradation of soil structure. {A}s a result, mineralisation of soil organic matter increases in the long term. {T}he adoption of no-tillage systems and the maintenance of a permanent vegetation cover using {D}irect seeding {M}ulch-based {C}ropping system or {DMC}, may increase carbon levels in the topsoil. {I}n {B}razil, no-tillage practices (mainly {DMC}), were introduced approximately 30 years ago in the south in the {P}arana state, primarily as a means of reducing erosion. {S}ubsequently, research has begun to study the management of the crop waste products and their effects on soil fertility, either in terms of phosphorus management, as a means of controlling soil acidity, or determining how manures can be applied in a more localised manner. {T}he spread of no-till in {B}razil has involved a large amount of extension work. {T}he area under no-tillage is still increasing in the centre and north of the country and currently occupies ca. 20 million hectares, covering a diversity of environmental conditions, cropping systems and management practices. {M}ost studies of {B}razilian soils give rates of carbon storage in the top 40 cm of the soil of 0.4 to 1.7 t {C} ha(-1) per year, with the highest rates in the {C}errado region. {H}owever, caution must be taken when analysing {DMC} systems in terms of carbon sequestration. {C}omparisons should include changes in trace gas fluxes and should not be limited to a consideration of carbon storage in the soil alone if the full implications for global warming are to be assessed.},
  keywords = {no tillage ; mulch ; stocks ; fluxes ; greenhouse gas ; {B}razil},
  booktitle = {},
  journal = {{A}gronomy for {S}ustainable {D}evelopment},
  volume = {26},
  numero = {1},
  pages = {1--8},
  ISSN = {1774-0746},
  year = {2006},
  DOI = {10.1051/agro:2005055},
  URL = {https://www.documentation.ird.fr/hor/fdi:010035590},
}