Characterization of soil properties under legume and non‐legume tree canopies occurring in signal grass ( Brachiaria decumbens Stapf .) pastures
Trees improve the soil by numerous processes, mainly when used in agroforestry systems, where different species are cultivated in the same area.Legume trees influence nutrient availability within the root zone of the intercropped species by different processes such as :i) N biologic fixation ;ii) nutrient recovery from deeper soil layers ;iii) reduction in soil erosion and runoff ; and iv) increasing nutrient bioavailability by increasing soil organic matter (SOM) mineralization.The objective of this research was to evaluate the total soil organic matter and soil Mehlich‐I P at different points underneath the tree crown, according to a shade gradient of legume and non‐legume trees occurring on signalgrass ( Brachiaria decumbens Stapf.) pastures.
agroforestry nutrient cycling shade soil fertility soil organic matter
J.C.B.Dubeux,Jr. M.A.Lira M.V.F.Santos D.M.Barros M.A.Silva A.C.L.Mello
UFR PE-Departamento de Zootecnia,R.Dom M anoel de Medeiros,S/N,Dois Irmaos,Recife,PE,Brazil,52171-90 I PA-A v.General San M artin,Bongi,Reci f e,PE,Brazil.
国际会议
呼和浩特
英文
2008-06-29（万方平台首次上网日期，不代表论文的发表时间）