Sjunkande pH i Västerbottens humuslager
Acidification is a central concept in the environmental debate. The effect of acidification of the soil is a matter of a decreasing amount of cations and thereby a decreasing ability to resist a supply of hydrogen ions to the soil. Acidification has gradually increased in the O horizon in Västerbott...
| Main Author: | |
|---|---|
| Format: | Otro |
| Language: | Swedish Swedish |
| Published: |
2005
|
| Subjects: | |
| Online Access: | https://stud.epsilon.slu.se/11834/ |
| _version_ | 1855571948940034048 |
|---|---|
| author | Herbertsson, Sofia |
| author_browse | Herbertsson, Sofia |
| author_facet | Herbertsson, Sofia |
| author_sort | Herbertsson, Sofia |
| collection | Epsilon Archive for Student Projects |
| description | Acidification is a central concept in the environmental debate. The effect of acidification of the soil is a matter of a decreasing amount of cations and thereby a decreasing ability to resist a supply of hydrogen ions to the soil. Acidification has gradually increased in the O horizon in Västerbotten over a 30-year period from the 1970th to the 1990th. The aim of this study was from inventories of The Swedish National Forest Soil Survey and The Swedish National Forest Inventory explain and quantify the acidification that has occurred in the O horizon of two regions in the north of Sweden. Data from SMHI, The Swedish Meteorological and Hydrological Institute, has also been used. The northern region showed a more distinct decrease of pH(H2O) in the O horizon then in the southern region. However, both of the region had significantly pH(H2O) decreases. Acidification processes like biological uptake of ions, biomass distribution and deposition was investigated, but these didn't explain the changes between the regions. A possible process that was investigated and might be explaining the changes of soil chemistry in O horizon is the amount of humus. The southern region had a tendency of decrease and the northern region a tendency of increase of the humus amount. |
| format | Otro |
| id | RepoSLU11834 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish swe |
| publishDate | 2005 |
| publishDateSort | 2005 |
| record_format | eprints |
| spelling | RepoSLU118342017-10-16T08:57:20Z https://stud.epsilon.slu.se/11834/ Sjunkande pH i Västerbottens humuslager Herbertsson, Sofia Soil chemistry and physics Acidification is a central concept in the environmental debate. The effect of acidification of the soil is a matter of a decreasing amount of cations and thereby a decreasing ability to resist a supply of hydrogen ions to the soil. Acidification has gradually increased in the O horizon in Västerbotten over a 30-year period from the 1970th to the 1990th. The aim of this study was from inventories of The Swedish National Forest Soil Survey and The Swedish National Forest Inventory explain and quantify the acidification that has occurred in the O horizon of two regions in the north of Sweden. Data from SMHI, The Swedish Meteorological and Hydrological Institute, has also been used. The northern region showed a more distinct decrease of pH(H2O) in the O horizon then in the southern region. However, both of the region had significantly pH(H2O) decreases. Acidification processes like biological uptake of ions, biomass distribution and deposition was investigated, but these didn't explain the changes between the regions. A possible process that was investigated and might be explaining the changes of soil chemistry in O horizon is the amount of humus. The southern region had a tendency of decrease and the northern region a tendency of increase of the humus amount. Försurning är ett centralt begrepp i miljödebatten. För marken är effekten av försurning en fråga om ett minskande förråd av katjoner och därmed en minskande förmåga att stå emot en tillförsel av vätejoner till marken. I Västerbotten har pH värdet i O-horisonten successivt minskat över en 30 års period från 1970- till 1990-tal. Syftet med detta arbete har varit att utifrån material från Ståndortskarteringens och Riksskogstaxeringens inventeringar förklara och kvantifiera den försurningen som skett i O-horisonten av två regioner i norra Sverige. Även data från SMHI, Sveriges meteorologiska och hydrologiska institut, användes. Den nordligare regionen visade på en mer tydlig pH(H2O) sänkning i O-horisonten än den sydligare regionen. Båda sänkningarna i regionerna var dock signifikanta. Försurningsprocesser som biologiskt upptag av joner, biomassafördelning och deposition undersöktes utan att kunna förklara förändringarna mellan regionerna. Humusmängden i regionerna undersöktes också och dessa kan eventuellt förklara ändringarna i markkemin i O-horisonten. Humusmängden i den södra regionen minskade medan att i den norra regionen tenderade att öka. 2005-04-08 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/11834/1/herbertsson_s_171016.pdf Herbertsson, Sofia, 2003. Sjunkande pH i Västerbottens humuslager : en kvantitativ analys. UNSPECIFIED, Uppsala. Uppsala: (NL, NJ) > Dept. of Forest Soils <https://stud.epsilon.slu.se/view/divisions/4077.html> urn:nbn:se:slu:epsilon-s-7852 swe |
| spellingShingle | Soil chemistry and physics Herbertsson, Sofia Sjunkande pH i Västerbottens humuslager |
| title | Sjunkande pH i Västerbottens humuslager |
| title_full | Sjunkande pH i Västerbottens humuslager |
| title_fullStr | Sjunkande pH i Västerbottens humuslager |
| title_full_unstemmed | Sjunkande pH i Västerbottens humuslager |
| title_short | Sjunkande pH i Västerbottens humuslager |
| title_sort | sjunkande ph i västerbottens humuslager |
| topic | Soil chemistry and physics |
| url | https://stud.epsilon.slu.se/11834/ https://stud.epsilon.slu.se/11834/ |