Journal
NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH
Volume 50, Issue 4, Pages 537-548Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00288230709510321
Keywords
grasslands; soil biochemical equilibrium; soil biochemical properties; soil enzymes; soil organic matter
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The biochemical properties of 29 soils under native grassland in a temperate humid zone (Galicia, north-west Spain) and subject to low intensity management (at least during the last 100 years) were determined with the aim of establishing a reference database to allow future comparative studies of the effect of grassland management on soil quality. Several biochemical properties were quantitatively and qualitatively studied. These properties were: labile carbon, microbial biomass carbon, microbial respiration, metabolic quotient, net nitrogen mineralisation and the potential activities of dehydrogenase, catalase, phosphodiesterase, phosphomonoesterase, casein-protease, BAA-protease, urease, cellulase, beta-glucosidase, invertase and arylsulphatase. The values of these properties were generally within the ranges of those reported for grassland soils from other parts of the world, but some properties differed both quantitatively and qualitatively from those of forest climax soils in the same area. An equation showing a balance between soil organic matter content and soil biochemical properties was obtained, indicating the existence of a biochemical equilibrium similar to that previously obtained for Galician (north-west Spain) forest climax soils.
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