@article{fdi:010042515,
  title = {{P}airwise comparison of soil organic particle-size distributions in native savannas and {E}ucalyptus plantations in {C}ongo},
  author = {{D}'{A}nnunzio, {R}. and {C}onche, {S}ofian and {L}andais, {D}. and {S}aint {A}ndr{\'e}, {L}. and {J}offre, {R}. and {B}arth{\`e}s, {B}ernard},
  editor = {},
  language = {{ENG}},
  abstract = {{C}onversion of native vegetation into fast-growing tree plantations is known to affect soil organic matter ({SOM}): soil carbon ({C}) and nitrogen ({N}) content and their distribution in particle-size fractions can be modified in various ways depending on numerous factors, such as soil properties, {SOM} levels prior to conversion, climatic conditions, silvicultural practices and fire occurrence. {S}ince 1978, 43,000 ha of clonal eucalyptus plantations have been established on sandy coastal plains under savannas near {P}ointe-{N}oire, {C}ongo. {W}e investigated the effects of afforestation on topsoil (0-10 cm) {C} and {N} through the analysis of their distribution in particle-size fractions using a pairwise experimental design that compared adjacent savannas and plantations. {T}he studied plantations were of different ages (2-30-year-old stands) and differently affected by accidental fires. {N}o significant difference in total topsoil {C}, {N} or {C}/{N} was observed between young plantations and savanna. {I}n old plantations that had not been affected by fire, total topsoil {C} content was twice as high as in savanna (p = 0.0016), on average, mostly involving fractions > 50 mu m. {B}y contrast, total topsoil {N} did not differ significantly at these sites. {I}n old plantations affected by fire, total topsoil {C} content did not differ significantly from that in savanna, but total topsoil {N} was 26% lower in plantations than in savanna (p = 0.0063), on average, and the decrease affected fractions < 200 mu m especially. {W}hatever the fire occurrence, total topsoil {C}/{N} was higher in old plantations than in savanna, in fractions > 20 mu m especially.},
  keywords = {soil organic matter ; particle size fractionation ; savanna ; eucalyptus ; fire ; {CONGO}},
  booktitle = {},
  journal = {{F}orest {E}cology and {M}anagement},
  volume = {255},
  numero = {3-4},
  pages = {1050--1056},
  ISSN = {0378-1127},
  year = {2008},
  DOI = {10.1016/j.foreco.2007.10.027},
  URL = {https://www.documentation.ird.fr/hor/fdi:010042515},
}