@article{PAR00001756,
  title = {{C}haracterization, functioning and classification of two volcanic soil profiles under different land uses in {C}entral {M}exico},
  author = {{P}rado, {B}. and {D}uwig, {C}{\'e}line and {H}idalgo, {C}. and {G}omez, {D}. and {Y}ee, {H}. and {P}rat, {C}hristian and {E}steves, {M}ichel and {E}tchevers, {J}. {D}.},
  editor = {},
  language = {{ENG}},
  abstract = {{V}olcanic soils constitute an important resource for agriculture and forestry in {C}entral {M}exico, as well as in various world regions. {T}hey exhibit unique properties and high productive potential related to the amorphous materials they contain. {T}he relationship between amorphous materials, soil characteristic and functioning, has not been well studied. {T}he objectives of the present work were to assess the influence of land use (agricultural and forest), topography and other soil forming factors on physical, chemical and mineralogical characteristics and pedological processes responsible for soil genesis and soil classification of two volcanic soil profiles derived from andesitic parent material located 150 m away from each other within the same toposequences. {T}he toposequence is located in the {T}rans-{M}exican {V}olcanic {B}elt ({TMVIB}), a highly populated region of {C}entral {M}exico that provides part of the water for {M}exico {C}ity megapolis. {A} series of field and laboratory techniques including physical, chemical, micromorphological, {X}-ray diffiraction ({XRD}), transmission electron microscopy ({TEM}), infra-red analysis, {M}ossbauer spectroscopy were used. {T}he main factor affecting the present morphology of the soil profiles was the topography. {T}he mineralogical features of the upper layers of the maize profile ({P}achic {A}ndosol), indicate redistribution of soil material from the upper part of the toposequence. {T}he land use change favored this redistribution. {D}eeper horizons of this profile were developed from volcanic ashes deposited in situ. hematite and ferfihydrite, considered markers of evolution in redistributed soil material were observed in this profile associated with allophane. {T}he presence of hematite has been reported for the first time in {M}exican {A}ndosols. {T}he present characteristics of the forest profile ({D}ystric {C}ambisol) are mainly due to the pedological process of the volcanic ash layers remaining in situ after the redistribution and volcanic breccia. {I}t was concluded that the forest profile evolved from an {A}ndosol to an {I}nceptisol, which was evidenced by desaturation, loss of silica and organic carbon. {I}n this profile the {F}e minerals were associated with the presence of gibbsite and halloysite. {T}he position in the toposequence and the physical and chemical characteristics of these profiles define their present functioning, such as losses by erosion and {C} dynamics.},
  keywords = {{A}ndosol ; {C}ambisol ; land use ; allophanic soil ; gibbsitic soil ; {T}rans {M}exican {V}olcanic {B}elt},
  booktitle = {},
  journal = {{G}eoderma},
  volume = {139},
  numero = {3-4},
  pages = {300--313},
  ISSN = {0016-7061},
  year = {2007},
  DOI = {10.1016/j.geoderma.2007.02.008},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00001756},
}