@article{fdi:010057050,
  title = {{B}iomass in different types of land use in the {B}razil's 'arc of deforestation'},
  author = {{C}osta, {L}. {G}. {S}. and {M}iranda, {I}. {S}. and {G}rimaldi, {M}ichel and {S}ilva, {M}. {L}. and {M}itja, {D}anielle and {L}ima, {T}. {T}. {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study aims to investigate the relationship of biomass with density and richness and soil characteristics. {I}n particular, we focus on the different types of land use found in areas of family farming in the southern and southeast regions of {P}ara {S}tate, {B}razil. {T}he study was conducted in three communities located in the {N}ova {I}pixuna, {P}arauapebas and {P}acaja municipalities, {P}ara {S}tate, {B}razil. {I}n each of the three areas, nine small family farms were chosen; in each lot five collection sites were established, where the structure of the vegetation cover was inventoried. {N}ine different types of land use were considered: conserved, exploited and burned forests; old and young secondary forests; clean and invaded pastures; crops areas (with cassava and cocoa). {A}t each of the 135 sampling sites, vegetation cover was inventoried in upper, middle and lower strata; soil samples were also collected for physico-chemical characterization. {F}rom these data, we calculated the biomass of the different strata and individuals density, species richness and physico-chemical of soil to investigate their relationships with biomass. {T}otal biomass varied greatly in all types of land use and in all strata studied. {C}onserved and exploited forests were different from those of burned forests. {B}urned forests were similar to old secondary forests. {Y}oung secondary forests were similar to invaded pastures and cocoa plantations. {I}n principal component analyses ({PCA}) of biomass three groups of land use were distinguished: one group was explained by important biomass from the upper stratum; a second group was explained by the absence of biomass in the upper stratum; and a third group was explained by biomass found in the middle stratum. {T}his result was compared with the results of the {PCA}s of density and richness matrix per stratum and physico-chemical properties of soil matrix through a co-inertia analysis. {T}he first co-inertia analysis showed that the two data matrices (density and richness structure and biomass) share a common structure, with 77% of the variability being explained. {T}he second co-inertia analysis also showed that the two data matrices (soil and biomass) do share a common structure. {T}hus, biomass was strongly correlated with density and richness and with the edaphic characteristics analyzed. {T}he different types of land use in areas of family farms can be categorized into three simple groups according to biomass; this categorization can serve as a reasonable indicator for the rapid estimation of stored biomass.},
  keywords = {{A}mazonian ; {D}ensity ; {F}amiliar agriculture ; {N}ecromass ; {R}ichness ; {S}oils},
  booktitle = {},
  journal = {{F}orest {E}cology and {M}anagement},
  volume = {278},
  numero = {},
  pages = {101--109},
  ISSN = {0378-1127},
  year = {2012},
  DOI = {10.1016/j.foreco.2012.04.007},
  URL = {https://www.documentation.ird.fr/hor/fdi:010057050},
}