Kloridhalter i gran utmed en depositionsgradient för havssalter
The knowledge of the chloride content and its fluxes and patterns in trees is insufficient. Increased knowledge would be desirable, one of many reasons is to be able to more efficiently meet the problems that the substance causes in the pulp industry. The purpose of this study was to examine and des...
| Autor principal: | |
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| Formato: | Otro |
| Lenguaje: | sueco sueco |
| Publicado: |
2005
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| Materias: | |
| Acceso en línea: | https://stud.epsilon.slu.se/11830/ |
| _version_ | 1855571948160942080 |
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| author | Munter, Fredrik |
| author_browse | Munter, Fredrik |
| author_facet | Munter, Fredrik |
| author_sort | Munter, Fredrik |
| collection | Epsilon Archive for Student Projects |
| description | The knowledge of the chloride content and its fluxes and patterns in trees is insufficient. Increased knowledge would be desirable, one of many reasons is to be able to more efficiently meet the problems that the substance causes in the pulp industry. The purpose of this study was to examine and describe the chloride concentration of Norwegian spruce (Picea abies L. Karst.) in the south of Sweden. Furthermore the aim was to be able to predict chloride concentration from readily measurable site factors. Samples were collected from 8 plots situated along a sea salt deposition gradient, from the Swedish west coast to the highlands of Småland. Influence by variables such as chloride deposition, amount of precipitation, site index, and age were examined. The results showed that the mean chloride concentration in Norwegian spruce within the study area was 28,6 mg Cl- /kg dry weight substance in the wood fraction and 10-40 times higher in the remaining fractions (bark, branches and needles). The chloride concentration showed no relation to the amount of deposited chloride. Instead there was a correlation between concentration and amount of precipitation, measured as throughfall. The trends and patterns between the different variables were not significant enough to be able to calculate the concentration of chloride on the basis of the site factors. |
| format | Otro |
| id | RepoSLU11830 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish swe |
| publishDate | 2005 |
| publishDateSort | 2005 |
| record_format | eprints |
| spelling | RepoSLU118302017-10-16T10:02:53Z https://stud.epsilon.slu.se/11830/ Kloridhalter i gran utmed en depositionsgradient för havssalter Munter, Fredrik Forestry - General aspects The knowledge of the chloride content and its fluxes and patterns in trees is insufficient. Increased knowledge would be desirable, one of many reasons is to be able to more efficiently meet the problems that the substance causes in the pulp industry. The purpose of this study was to examine and describe the chloride concentration of Norwegian spruce (Picea abies L. Karst.) in the south of Sweden. Furthermore the aim was to be able to predict chloride concentration from readily measurable site factors. Samples were collected from 8 plots situated along a sea salt deposition gradient, from the Swedish west coast to the highlands of Småland. Influence by variables such as chloride deposition, amount of precipitation, site index, and age were examined. The results showed that the mean chloride concentration in Norwegian spruce within the study area was 28,6 mg Cl- /kg dry weight substance in the wood fraction and 10-40 times higher in the remaining fractions (bark, branches and needles). The chloride concentration showed no relation to the amount of deposited chloride. Instead there was a correlation between concentration and amount of precipitation, measured as throughfall. The trends and patterns between the different variables were not significant enough to be able to calculate the concentration of chloride on the basis of the site factors. Kunskapen om halten av klorid och dess rörelsemönster i träden är bristfällig. Ökad kunskap vore önskvärt för att effektivt bemöta de problem som ämnet orsakar i massabruken. Syftet med detta arbete har varit att undersöka och beskriva kloridhalten i sydsvensk gran (Picea abies L. Karst.) och dess olika trädfraktioner. Målet har också varit att skapa en modell för att kunna förutsäga kloridhalten utifrån ett antal mätbara ståndortsfaktorer. Prover hämtades från 8 provytor som låg placerade längs en depositionsgradient för havssalter, från västkusten nära Halmstad, upp på småländska höglandet. Påverkan på kloridhalten från variabler såsom kloriddeposition, nederbördsmängd, ståndortsindex och ålder undersöktes. Resultatet visade att i medeltal innehåller granen inom provområdet 28,6 mg Cl-/kg torrsubstans (TS) i veden och att de övriga fraktionerna (bark, grenar, och toppar) har 10-40 ggr högre halter. Vidare visades att kloridhalten inte har något samband mot mängden deponerad klorid. Istället fanns en viss korrelation mot mängden nederbörd som krondropp. Trenderna och sambanden mellan de olika faktorerna och kloridhalten var dock så svaga att det inte går att förutsäga kloridhalten med hjälp av dessa. 2005-04-08 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/11830/1/munter_f_171016.pdf Munter, Fredrik, 2002. Kloridhalter i gran utmed en depositionsgradient för havssalter. UNSPECIFIED, Uppsala. Uppsala: (NL, NJ) > Dept. of Forest Soils <https://stud.epsilon.slu.se/view/divisions/4077.html> urn:nbn:se:slu:epsilon-s-7856 swe |
| spellingShingle | Forestry - General aspects Munter, Fredrik Kloridhalter i gran utmed en depositionsgradient för havssalter |
| title | Kloridhalter i gran utmed en depositionsgradient för havssalter |
| title_full | Kloridhalter i gran utmed en depositionsgradient för havssalter |
| title_fullStr | Kloridhalter i gran utmed en depositionsgradient för havssalter |
| title_full_unstemmed | Kloridhalter i gran utmed en depositionsgradient för havssalter |
| title_short | Kloridhalter i gran utmed en depositionsgradient för havssalter |
| title_sort | kloridhalter i gran utmed en depositionsgradient för havssalter |
| topic | Forestry - General aspects |
| url | https://stud.epsilon.slu.se/11830/ https://stud.epsilon.slu.se/11830/ |