Factors Controlling Sediment and Phosphorus Export from Two Belgian Agricultural Catchments
ABSTRACT Sediment and total phosphorus (TP) export vary through space and time. This study was conducted to determine the factors controlling sediment and TP export in two agricultural catchments situated in the Belgian Loess Belt. At the outlet of these catchments runoff discharge was continuously...
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| Veröffentlicht in: | Journal of environmental quality 2001-07, Vol.30 (4), p.1249-1258 |
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| creator | Steegen, A. Govers, G. Takken, I. Nachtergaele, J. Poesen, J. Merckx, R. |
| description | ABSTRACT
Sediment and total phosphorus (TP) export vary through space and time. This study was conducted to determine the factors controlling sediment and TP export in two agricultural catchments situated in the Belgian Loess Belt. At the outlet of these catchments runoff discharge was continuously measured and suspended sediment samples were taken during rainfall events. Within the catchments vegetation type and cover, soil surface parameters, erosion features, sediment pathways, and rainfall characteristics were monitored. Total P content and sediment characteristics such as clay, organic carbon, and suspended sediment concentration were correlated. Total sediment and TP export differ significantly between the monitored catchments. Much of the difference is due to the occurrence of an extreme event in one catchment and the morphology and spatial organization of land use in the catchments. In one catchment, the direct connection between erosive areas and the catchment outlet by means of a road system contributed to a high sediment delivery ratio (SDR) at the outlet. In the other catchment, the presence of a wide valley in the center of the catchment caused sediment deposition. Vegetation also had an effect on sediment production and deposition. Thus, many factors control sediment and TP export from small agricultural catchments; some of these factors are related to the physical catchment characterisics such as morphology and landscape structure and are (semi)permanent, while others, such as vegetation cover and land use, are time dependent. |
| doi_str_mv | 10.2134/jeq2001.3041249x |
| format | Article |
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Sediment and total phosphorus (TP) export vary through space and time. This study was conducted to determine the factors controlling sediment and TP export in two agricultural catchments situated in the Belgian Loess Belt. At the outlet of these catchments runoff discharge was continuously measured and suspended sediment samples were taken during rainfall events. Within the catchments vegetation type and cover, soil surface parameters, erosion features, sediment pathways, and rainfall characteristics were monitored. Total P content and sediment characteristics such as clay, organic carbon, and suspended sediment concentration were correlated. Total sediment and TP export differ significantly between the monitored catchments. Much of the difference is due to the occurrence of an extreme event in one catchment and the morphology and spatial organization of land use in the catchments. In one catchment, the direct connection between erosive areas and the catchment outlet by means of a road system contributed to a high sediment delivery ratio (SDR) at the outlet. In the other catchment, the presence of a wide valley in the center of the catchment caused sediment deposition. Vegetation also had an effect on sediment production and deposition. Thus, many factors control sediment and TP export from small agricultural catchments; some of these factors are related to the physical catchment characterisics such as morphology and landscape structure and are (semi)permanent, while others, such as vegetation cover and land use, are time dependent.</description><identifier>ISSN: 0047-2425</identifier><identifier>EISSN: 1537-2537</identifier><identifier>DOI: 10.2134/jeq2001.3041249x</identifier><identifier>PMID: 11476502</identifier><identifier>CODEN: JEVQAA</identifier><language>eng</language><publisher>Madison: American Society of Agronomy, Crop Science Society of America, Soil Science Society</publisher><subject>Agricultural watersheds ; Agriculture ; Agronomy. Soil science and plant productions ; Belgium ; Biological and medical sciences ; Catchments ; Environmental Monitoring ; Erosion features ; Fundamental and applied biological sciences. Psychology ; Geologic Sediments - chemistry ; Land use ; Organic carbon ; Phosphorus - analysis ; Phosphorus - chemistry ; Plants ; Rain ; river discharge ; Sediment concentration ; Sediment samplers ; Soil and water pollution ; Soil Pollutants - analysis ; Soil science ; Soil surfaces ; Suspended sediments ; Vegetation cover ; Water Movements ; Water Pollutants - analysis</subject><ispartof>Journal of environmental quality, 2001-07, Vol.30 (4), p.1249-1258</ispartof><rights>Published in J. Environ. Qual.30:1249–1258.</rights><rights>2001 INIST-CNRS</rights><rights>Copyright American Society of Agronomy, Inc. Jul/Aug 2001</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a593X-ff2f2f123b792012fcd5ead0ad486eec8c9c9c4cde93a733f5903d6efc196ab93</citedby><cites>FETCH-LOGICAL-a593X-ff2f2f123b792012fcd5ead0ad486eec8c9c9c4cde93a733f5903d6efc196ab93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.2134%2Fjeq2001.3041249x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.2134%2Fjeq2001.3041249x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=1102431$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/11476502$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Steegen, A.</creatorcontrib><creatorcontrib>Govers, G.</creatorcontrib><creatorcontrib>Takken, I.</creatorcontrib><creatorcontrib>Nachtergaele, J.</creatorcontrib><creatorcontrib>Poesen, J.</creatorcontrib><creatorcontrib>Merckx, R.</creatorcontrib><title>Factors Controlling Sediment and Phosphorus Export from Two Belgian Agricultural Catchments</title><title>Journal of environmental quality</title><addtitle>J Environ Qual</addtitle><description>ABSTRACT
Sediment and total phosphorus (TP) export vary through space and time. This study was conducted to determine the factors controlling sediment and TP export in two agricultural catchments situated in the Belgian Loess Belt. At the outlet of these catchments runoff discharge was continuously measured and suspended sediment samples were taken during rainfall events. Within the catchments vegetation type and cover, soil surface parameters, erosion features, sediment pathways, and rainfall characteristics were monitored. Total P content and sediment characteristics such as clay, organic carbon, and suspended sediment concentration were correlated. Total sediment and TP export differ significantly between the monitored catchments. Much of the difference is due to the occurrence of an extreme event in one catchment and the morphology and spatial organization of land use in the catchments. In one catchment, the direct connection between erosive areas and the catchment outlet by means of a road system contributed to a high sediment delivery ratio (SDR) at the outlet. In the other catchment, the presence of a wide valley in the center of the catchment caused sediment deposition. Vegetation also had an effect on sediment production and deposition. Thus, many factors control sediment and TP export from small agricultural catchments; some of these factors are related to the physical catchment characterisics such as morphology and landscape structure and are (semi)permanent, while others, such as vegetation cover and land use, are time dependent.</description><subject>Agricultural watersheds</subject><subject>Agriculture</subject><subject>Agronomy. Soil science and plant productions</subject><subject>Belgium</subject><subject>Biological and medical sciences</subject><subject>Catchments</subject><subject>Environmental Monitoring</subject><subject>Erosion features</subject><subject>Fundamental and applied biological sciences. 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Sediment and total phosphorus (TP) export vary through space and time. This study was conducted to determine the factors controlling sediment and TP export in two agricultural catchments situated in the Belgian Loess Belt. At the outlet of these catchments runoff discharge was continuously measured and suspended sediment samples were taken during rainfall events. Within the catchments vegetation type and cover, soil surface parameters, erosion features, sediment pathways, and rainfall characteristics were monitored. Total P content and sediment characteristics such as clay, organic carbon, and suspended sediment concentration were correlated. Total sediment and TP export differ significantly between the monitored catchments. Much of the difference is due to the occurrence of an extreme event in one catchment and the morphology and spatial organization of land use in the catchments. In one catchment, the direct connection between erosive areas and the catchment outlet by means of a road system contributed to a high sediment delivery ratio (SDR) at the outlet. In the other catchment, the presence of a wide valley in the center of the catchment caused sediment deposition. Vegetation also had an effect on sediment production and deposition. Thus, many factors control sediment and TP export from small agricultural catchments; some of these factors are related to the physical catchment characterisics such as morphology and landscape structure and are (semi)permanent, while others, such as vegetation cover and land use, are time dependent.</abstract><cop>Madison</cop><pub>American Society of Agronomy, Crop Science Society of America, Soil Science Society</pub><pmid>11476502</pmid><doi>10.2134/jeq2001.3041249x</doi><tpages>10</tpages></addata></record> |
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| subjects | Agricultural watersheds Agriculture Agronomy. Soil science and plant productions Belgium Biological and medical sciences Catchments Environmental Monitoring Erosion features Fundamental and applied biological sciences. Psychology Geologic Sediments - chemistry Land use Organic carbon Phosphorus - analysis Phosphorus - chemistry Plants Rain river discharge Sediment concentration Sediment samplers Soil and water pollution Soil Pollutants - analysis Soil science Soil surfaces Suspended sediments Vegetation cover Water Movements Water Pollutants - analysis |
| title | Factors Controlling Sediment and Phosphorus Export from Two Belgian Agricultural Catchments |
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