Variable Specific Discharge and Its Influence on Mass Export of Carbon, Sulphur, Calcium and Magnesium in a Boreal Forest Catchment
Considerable research efforts are made in order to understand the global carbon cycle and how it will affect future climate change and vice versa. To be able to calculate the export of carbon from a certain area, discharge is one of the most important variables together with stream concentrations. M...
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Uppsala universitet, Institutionen för geovetenskaper
2016
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ftuppsalauniv:oai:DiVA.org:uu-302765 2023-05-15T17:25:12+02:00 Variable Specific Discharge and Its Influence on Mass Export of Carbon, Sulphur, Calcium and Magnesium in a Boreal Forest Catchment Variabel specifik avrinning och dess påverkan på exporten av kol, svavel, kalcium och magnesium från ett avrinningområde i barrskogsbältet Gärtner, Isabell 2016 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302765 eng eng Uppsala universitet, Institutionen för geovetenskaper Examensarbete vid Institutionen för geovetenskaper, 1650-6553 373 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302765 info:eu-repo/semantics/openAccess Hydrochemistry hydrology specific discharge boreal catchment Hydrokemi hydrologi avrinning avrinningsområde i barrskog Oceanography Hydrology and Water Resources Oceanografi hydrologi och vattenresurser Student thesis info:eu-repo/semantics/bachelorThesis text 2016 ftuppsalauniv 2023-02-23T21:45:57Z Considerable research efforts are made in order to understand the global carbon cycle and how it will affect future climate change and vice versa. To be able to calculate the export of carbon from a certain area, discharge is one of the most important variables together with stream concentrations. Measuring discharge in every catchment would be impossible, as it is both time consuming and expensive. To come around these obstacles, the majority of studies on element export use known discharge data from gauging stations at a single catchment outlet and assumes the same discharge per unit area from nearby catchments, known as the assumption of uniform specific discharge. A few studies in recent years, have come to the conclusion that this questionable assumption can lead to large errors in estimated discharge volumes and it should therefore be reconsidered.This study aims to analyse how the export of elements changes if actual measured variable discharge is applied in comparison to uniform specific discharge. The results of this study shows that the assumption of uniform discharge leads to an overestimation of the export of dissolved organic carbon (DOC), sulphur, calcium and magnesium from forest-dominated catchments by up to 30%. At the same time this assumption leads to an underestimation of export from wetland-dominated catchments by up to 26% over a five year period. Mycket av forskningen de senaste åren har handlat om framtida klimatförändringar och det globala kolkretsloppet och hur de båda påverkar varandra. För att göra tillförlitliga beräkningar av hur mycket kol ett område, i det här fallet ett barrskogsområde i norra Sverige, tillför vattendragen i närheten under en viss tid skulle det behöva göras vattenståndsmätningar och vattenanalyser vid varje vattendrag, men det skulle vara omöjligt eftersom det är för kostsamt och tidskrävande. För att ändå kunna göra uppskattningar av hur mycket kol, spårämnen och metaller som kommer från ett område, använder de flesta studier information om vattenstånd och ... Bachelor Thesis Norra Sverige Uppsala University: Publications (DiVA) Fallet ENVELOPE(13.700,13.700,68.090,68.090) Kol’ ENVELOPE(155.946,155.946,53.834,53.834) |
institution |
Open Polar |
collection |
Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Hydrochemistry hydrology specific discharge boreal catchment Hydrokemi hydrologi avrinning avrinningsområde i barrskog Oceanography Hydrology and Water Resources Oceanografi hydrologi och vattenresurser |
spellingShingle |
Hydrochemistry hydrology specific discharge boreal catchment Hydrokemi hydrologi avrinning avrinningsområde i barrskog Oceanography Hydrology and Water Resources Oceanografi hydrologi och vattenresurser Gärtner, Isabell Variable Specific Discharge and Its Influence on Mass Export of Carbon, Sulphur, Calcium and Magnesium in a Boreal Forest Catchment |
topic_facet |
Hydrochemistry hydrology specific discharge boreal catchment Hydrokemi hydrologi avrinning avrinningsområde i barrskog Oceanography Hydrology and Water Resources Oceanografi hydrologi och vattenresurser |
description |
Considerable research efforts are made in order to understand the global carbon cycle and how it will affect future climate change and vice versa. To be able to calculate the export of carbon from a certain area, discharge is one of the most important variables together with stream concentrations. Measuring discharge in every catchment would be impossible, as it is both time consuming and expensive. To come around these obstacles, the majority of studies on element export use known discharge data from gauging stations at a single catchment outlet and assumes the same discharge per unit area from nearby catchments, known as the assumption of uniform specific discharge. A few studies in recent years, have come to the conclusion that this questionable assumption can lead to large errors in estimated discharge volumes and it should therefore be reconsidered.This study aims to analyse how the export of elements changes if actual measured variable discharge is applied in comparison to uniform specific discharge. The results of this study shows that the assumption of uniform discharge leads to an overestimation of the export of dissolved organic carbon (DOC), sulphur, calcium and magnesium from forest-dominated catchments by up to 30%. At the same time this assumption leads to an underestimation of export from wetland-dominated catchments by up to 26% over a five year period. Mycket av forskningen de senaste åren har handlat om framtida klimatförändringar och det globala kolkretsloppet och hur de båda påverkar varandra. För att göra tillförlitliga beräkningar av hur mycket kol ett område, i det här fallet ett barrskogsområde i norra Sverige, tillför vattendragen i närheten under en viss tid skulle det behöva göras vattenståndsmätningar och vattenanalyser vid varje vattendrag, men det skulle vara omöjligt eftersom det är för kostsamt och tidskrävande. För att ändå kunna göra uppskattningar av hur mycket kol, spårämnen och metaller som kommer från ett område, använder de flesta studier information om vattenstånd och ... |
format |
Bachelor Thesis |
author |
Gärtner, Isabell |
author_facet |
Gärtner, Isabell |
author_sort |
Gärtner, Isabell |
title |
Variable Specific Discharge and Its Influence on Mass Export of Carbon, Sulphur, Calcium and Magnesium in a Boreal Forest Catchment |
title_short |
Variable Specific Discharge and Its Influence on Mass Export of Carbon, Sulphur, Calcium and Magnesium in a Boreal Forest Catchment |
title_full |
Variable Specific Discharge and Its Influence on Mass Export of Carbon, Sulphur, Calcium and Magnesium in a Boreal Forest Catchment |
title_fullStr |
Variable Specific Discharge and Its Influence on Mass Export of Carbon, Sulphur, Calcium and Magnesium in a Boreal Forest Catchment |
title_full_unstemmed |
Variable Specific Discharge and Its Influence on Mass Export of Carbon, Sulphur, Calcium and Magnesium in a Boreal Forest Catchment |
title_sort |
variable specific discharge and its influence on mass export of carbon, sulphur, calcium and magnesium in a boreal forest catchment |
publisher |
Uppsala universitet, Institutionen för geovetenskaper |
publishDate |
2016 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302765 |
long_lat |
ENVELOPE(13.700,13.700,68.090,68.090) ENVELOPE(155.946,155.946,53.834,53.834) |
geographic |
Fallet Kol’ |
geographic_facet |
Fallet Kol’ |
genre |
Norra Sverige |
genre_facet |
Norra Sverige |
op_relation |
Examensarbete vid Institutionen för geovetenskaper, 1650-6553 373 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-302765 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766116553953116160 |