%0 Journal Article
%T CARBONO ORG¨˘NICO DEL SUELO EN DIFERENTES USOS DEL TERRENO DE PAISAJES ANDINOS COLOMBIANOS
%A Carvajal
%A Andr¨¦s F
%A Feijoo
%A Alexander
%A Quintero
%A Heimar
%A Rond¨®n
%A Marco A
%J Revista de la ciencia del suelo y nutrici¨®n vegetal
%D 2009
%I Scientific Electronic Library Online
%R 10.4067/S0718-27912009000300005
%X the relationship between changes in land use and soil carbon and nitrogen was assessed in alcal¨˘ (colombian coffee growing region), between 900 and 1600 m. soils are argiudolls and melanudands and sampling units were defined according to the altitudinal gradient. carbon and nitrogen content, c:n ratio, bulk density and 13c and 15n abundances were measured. significant differences (p < 0.05) were found due to altitude effect, differentiating the high zone by high c (37.06 -42.88 t ha-1), n (3.12-3.86 t ha-1) and c: n (11.17-11.97), low bulk density (0.56-0.65 g cm-3) and 15n abundance (4.59-5.15 %o). fallow and monocultures stored more carbon in deeper layers of the soil, while most preserved sites showed low c, n contents. the 13c in land uses ranged between -25.18%o and -21.17 %o, indicating that carbon was fixed mainly by c3 plants. it was concluded that land use changes affect c stocks, due to practices like chemical fertilization; and alcal¨˘ soils have high potential for ecosystem services related with edaphic carbon capture.
%K carbon sequestration in the andes
%K land use changes
%K stable isotopes.
%U http://www.scielo.cl/scielo.php?script=sci_abstract&pid=S0718-27912009000300005&lng=en&nrm=iso&tlng=en