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Title

Biochemical properties in managed grassland soils in a temperate humid zone: modifications of soil quality as a consequence of intensive grassland use.

AuthorsPaz Ferreiro, J.; Trasar-Cepeda, Carmen; Leirós, M. C.
KeywordsSoil biochemical properties
Soil quality
Grassland management
Soil enzymes
Soil organic matter
Issue Date2009
PublisherSpringer
CitationBiological and Fertility of Soils 45:711–722 (2009)
AbstractThe maintenance of soil quality is critical for ensuring the sustainability of the environment and the biosphere. Although soil biochemical properties are considered good indicators of changes in soil quality, few studies have been made of the changes in biochemical properties brought about by anthropogenic disturbance of grassland ecosystems. In the present study, several biochemical properties were analysed in 31 grassland soils subjected to a high level of management, and the values obtained were compared with known values corresponding to native grasslands from the same region (Galicia, NW Spain). The 31 managed grasslands were divided in two groups (re-sown grasslands and improved grasslands) according to their management and past land use. The biochemical properties studied were: labile carbon, microbial biomass carbon, microbial respiration, metabolic quotient, net nitrogen mineralization, and the activities of the following enzymes: dehydrogenase, catalase, phosphodiesterase, phosphomonoesterase, casein-protease, BAA-protease, urease, cellulase, ß-glucosidase, invertase and arylsulphatase. Managed grasslands exhibited lower values of soil biochemical properties than native grasslands. Three biochemical equilibrium equations were used to compare soil quality in managed and native grasslands. One of the equations did not show any significant difference between the groups of grassland soils considered. On the contrary, two of the equations showed similar soil quality for improved and native grasslands, while re-sown grasslands exhibited a loss of soil quality when compared to native grassland soils.
Publisher version (URL)http://dx.doi.org/10.1007/s00374-009-0382-y
URIhttp://hdl.handle.net/10261/58487
DOI10.1007/s00374-009-0382-y
ISSN0178-2762
Appears in Collections:(IIAG) Artículos
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