2024-03-28T22:49:12Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/160982021-10-29T07:11:59Zcom_10261_72com_10261_6com_10261_55com_10261_50com_10261_8col_10261_325col_10261_308col_10261_303
Effect of plant cover decline on chemical and microbiological parameters under Mediterranean climate
García Izquierdo, Carlos
Hernández Fernández, María Teresa
Roldán Garrigos, Antonio
Martín Ramos, Amalia
Organic matter fractions
Microbiological properties
Plant cover degradation
Enzyme activities
Mediterranean climate
8 pages, 6 tables.
The uses of many of the soils of Central Spain have changed and these changes have led frequently to the decline of natural plant cover. In this paper we report on the organic matter fractions and the microbial activity of soils developed from different substrates (limestone and granites) in relation to plant cover decline. Specific indicators of microbial activity (microbial biomass carbon (MBC), basal respiration, and some oxidoreductase and hydrolase activities) were measured. These indicators decreased in value in both limestone and acid soils where plant cover had declined (from climax, tree forest, to low bush); a similar effect was observed in the labile organic matter fractions (water soluble carbon (WSC), water soluble carbohydrates and polyphenolic compounds). For some measures of microbiological activity (e.g. MBC and soil respiration) the differences in acid soils were lower than in limestone soils. For example, MBC values in limestone soils ranged from 1426 ngC g−1 in tree forest to 498 ngC g−1 in low bush; while in acid soils, these values ranged from 428 ngC g−1 in tree forest to 265 ngC g−1 in low bush. Acid soils, unlike the limestone soils, showed no relationship between plant cover decline and hydrolase activities related to the N cycle (urease and protease). In general, soil microbial activity was negatively affected by plant cover degradation.
Peer reviewed
2009-08-20T10:30:02Z
2009-08-20T10:30:02Z
2002-05
artículo
http://purl.org/coar/resource_type/c_6501
Soil Biology and Biochemistry 34(5): 635-542 (2002)
0038-0717
http://hdl.handle.net/10261/16098
10.1016/S0038-0717(01)00225-5
en
http://dx.doi.org/10.1016/S0038-0717(01)00225-5
none
259768 bytes
application/pdf
Elsevier