03103naa a2200349 a 450000100080000000500110000800800410001902200140006002400540007410000220012824501750015026000090032530000110033452020150034565000130236065000240237365000190239765300230241665300090243965300400244865300390248865300230252770000170255070000200256770000200258770000230260770000240263070000260265470000180268070000200269877300350271821491132022-12-01       2022    bl uuuu     u00u1 u    #d  a0341-81627 ahttps://doi.org/10.1016/j.catena.2022.1066192DOI1 aSANTOS, J. V. dos  aThe long-term effects of intensive grazing and silvopastoral systems on soil physicochemical properties, enzymatic activity, and microbial biomass.h[electronic resource]  c2022  a1 - 11  aBrazil is the largest exporter and the second-largest beef producer in the world. The country?s biggest challenge  has been to increase the production capacity of soils in an environmentally sustainable way. In this context,  agricultural practices that preserve the environment have demonstrated high productivity and sustainability by  emphasizing intensive grazing management and silvopastoral systems. In this study, the effects of the conversion  of a native forest (FO) into different pasture-based cattle production systems were assessed in long-term field  experiments using microbiological and physicochemical measurements. Five pasture systems were evaluated: i)  irrigated high stocking rate pasture (IHS); ii) rainfed high stocking rate pasture (RHS); iii) rainfed moderate  stocking rate pasture (RMS); iv) silvopastoral system with moderate stocking rate (SPS); and v) degraded pasture  (DP), the latter used as a reference for conventional pasture management, extensively used by farmers. Soil  samples (0?10 cm) were analyzed for bulk density (BD), total carbon content (TC), soil organic matter humification index (HLIFS), activities of soil enzymes β-glucosidase (BG) and arylsulfatase (ARYL), microbial biomass  carbon (MBC), and basal respiration (BR). The results showed that all managed pastures presented higher soil  carbon content than DP (16.2 ± 1.7 g kg− 1 ), especially the RMS system, which presented the highest carbon  content (32.9 ± 0.9 g kg− 1 ). Activities of BG and ARYL were more sensitive to detecting management changes  than MBC and BR. Increased activities of BG and ARYL were observed in the RMS system, possibly due to the  higher amount of biomass input, while this effect was less expressive in the other management systems. The  results indicated that soil enzymatic activities are sensitive to land use and management and could be used as soil  quality indicators in pasture-based beef cattle production for different systems in tropical soils.  aPastures  aSoil organic matter  aTropical soils  aEnzymatic activity  aILPF  aIntegrated livestock forest systems  aNtegrated livestock-forest systems  aProduction systems1 aBENTO, L. R.1 aBRESOLIN, J. D.1 aFOSCHINI, M. M.1 aOLIVEIRA, P. P. A.1 aPEZZOPANE, J. R. M.1 aBERNARDI, A. C. de C.1 aMENDES, I. C.1 aMARTIN NETO, L.  tCatenagv. 219, a106619, 2022.