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| Author | de Paz, J.-M.; Sánchez, J.; Visconti, F. | ||||
| Title | Combined use of GIS and environmental indicators for assessment of chemical, physical and biological soil degradation in a Spanish Mediterranean region | Type | Journal Article | ||
| Year | 2006 | Publication | Journal of environmental management | Abbreviated Journal | |
| Volume | 79 | Issue | 2 | Pages | 150-162 |
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| Abstract | Soil is one of the main non-renewable natural resources in the world. In the Valencian Community (Mediterranean coast of Spain), it is especially important because agriculture and forest biomass exploitation are two of the main economic activities in the region. More than 44% of the total area is under agriculture and 52% is forested. The frequently arid or semi-arid climate with rainfall concentrated in few events, usually in the autumn and spring, scarcity of vegetation cover, and eroded and shallow soils in several areas lead to soil degradation processes. These processes, mainly water erosion and salinization, can be intense in many locations within the Valencian Community. Evaluation of soil degradation on a regional scale is important because degradation is incompatible with sustainable development. Policy makers involved in land use planning require tools to evaluate soil degradation so they can go on to develop measures aimed at protecting and conserving soils. In this study, a methodology to evaluate physical, chemical and biological soil degradation in a GIS-based approach was developed for the Valencian Community on a 1/200,000 scale. The information used in this study was obtained from two different sources: (i) a soil survey with more than 850 soil profiles sampled within the Valencian Community, and (ii) the environmental information implemented in the Geo-scientific map of the Valencian Community digitised on an Arc/Info GIS. Maps of physical, chemical and biological soil degradation in the Valencian Community on a 1/200,000 scale were obtained using the methodology devised. These maps can be used to make a cost-effective evaluation of soil degradation on a regional scale. Around 29% of the area corresponding to the Valencian Community is affected by high to very high physical soil degradation, 36% by high to very high biological degradation, and 6% by high to very high chemical degradation. It is, therefore, necessary to draw up legislation and to establish the policy framework for actions focused on preventing soil degradation and conserving its productive potential. |
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| Publisher | Elsevier | Place of Publication | Editor | ||
| Language | Summary Language | Original Title | |||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0301-4797 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
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THL @ luqianxue.zhang @ dePaz2006 | Serial | 47 | ||
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| Author | Deverel, S.J.; Fujii, R. | ||||
| Title | Chemistry of trace elements in soils and ground water | Type | Journal Article | ||
| Year | 1990 | Publication | Agricultural salinity assessment and management | Abbreviated Journal | |
| Volume | Issue | Pages | 64-90 | ||
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| Publisher | American Society of Civil Engineers New York | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number |
THL @ luqianxue.zhang @ deverel1990chemistry | Serial | 69 | ||
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| Author | Dikaiakos, J.G.; Tsitouris, C.G.; Siskos, P.A.; Melissos, D.A.; Nastos, P. | ||||
| Title | Rainwater composition in Athens, Greece | Type | Journal Article | ||
| Year | 1990 | Publication | Atmospheric Environment. Part B. Urban Atmosphere | Abbreviated Journal | |
| Volume | 24 | Issue | 1 | Pages | 171-176 |
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| Publisher | Elsevier | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number |
THL @ luqianxue.zhang @ dikaiakos1990rainwater | Serial | 74 | ||
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| Author | Di Lorenzo, T.; Galassi, D.M.P. | ||||
| Title | Agricultural impact on Mediterranean alluvial aquifers: do groundwater communities respond? | Type | Journal Article | ||
| Year | 2013 | Publication | Fundamental and Applied Limnology/Archiv für Hydrobiologie | Abbreviated Journal | |
| Volume | 182 | Issue | 4 | Pages | 271-282 |
| Keywords | alluvial aquifers, groundwater, stygobiont, nitrate, overexploitation | ||||
| Abstract | In Mediterranean countries agricultural development heavily depends on groundwater availability due to arid and semi-arid climate and poor surface-water resources. Agriculture represents one of the most relevant pressures which generate impacts in alluvial aquifers by means of fertilizers and pesticides usage and groundwater overexploitation. Until now, very few studies have addressed the ecological response of groundwater fauna to groundwater contamination and overexploitation due to agricultural practices. We investigated a Mediterranean alluvial aquifer heavily affected by nitrates contamination and groundwater abstraction stress due to crop irrigation. The aim of this study was to evaluate the sensitivity of groundwater communities to (a) groundwater nitrate contamination, (b) groundwater abstraction due to irrigation practices, and (c) saltwater intrusion. The present work suggests that nitrate concentration lower than 150 mg l –1 is not an immediate threat to groundwater biodiversity in alluvial aquifers. This conclusion must be carefully considered in the light of the total lack of knowledge of the effects of long-term nitrate pollution on the groundwater biota. Moreover, local extinctions of less tolerant species, prior to monitoring, cannot be ruled out. Conversely, species abundances in ground water are affected by groundwater withdrawal, but species richness may be less sensitive. This result is attributable to the disappearance of saturated microhabitats and to the depletion of fine unconsolidated sediments, reducing the surface available to bacterial biofilm, which represent the trophic resource for several groundwater invertebrates and where the main aquifer self-purification processes, such as denitrification, take place. Saltwater intrusion seems not to affect groundwater species at the values measured in this coastal aquifer. |
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| Publisher | E. Schweizerbart'sche Verlagsbuchhandlung | Place of Publication | Editor | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 1863-9135 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number |
THL @ luqianxue.zhang @ DiLorenzo2013 | Serial | 43 | ||
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| Author | Morales-Baquero, R.; Pulido-Villena, E.; Reche, I. | ||||
| Title | Chemical signature of Saharan dust on dry and wet atmospheric deposition in the south-western Mediterranean region | Type | Journal Article | ||
| Year | 2013 | Publication | Tellus B: Chemical and Physical Meteorology | Abbreviated Journal | |
| Volume | 65 | Issue | 1 | Pages | 18720 |
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| Abstract | We studied if the presence of Saharan dust intrusions and the rains modify the chemical signature of the wet and dry deposition in the southern Iberian Peninsula. We have sorted the 109 sampling weeks by the presence (rainy weeks) or absence (dry weeks) of rain and by the occurrence or not of Saharan dust intrusions. Dry deposition dominated the delivery of particulate material (PM), total phosphorus (TP), soluble reactive phosphorus (SRP), Ca2+, Mg2+ and K+, whereas wet deposition dominated the delivery of Na+, total nitrogen, and . In the dry weeks, the presence of Saharan dust intrusions lead to higher inputs of PM, TP, SRP, Ca2+, Mg2+ and K+ in the dry deposition. Conversely, in the rainy weeks, there were no differences in mean values of dry deposition irrespective of the occurrence of Saharan dust intrusions. Nevertheless, in the presence of Saharan intrusions and some rain, the weekly collection of PM, TP and Ca2+ in dry deposition were significantly higher and increased as rainfall was lower. By contrast, the ions Cl– and Na+ in wet deposition were higher in absence of Saharan dust intrusion and increased as rainfall increased. | ||||
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| Publisher | Taylor & Francis | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number |
THL @ luqianxue.zhang @ doi:10.3402/tellusb.v65i0.18720 | Serial | 54 | ||
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