Björkbarksextrakt, BBE : en lönsam lösning på betningsproblematiken?
The calculations in this thesis are evaluating the profit as a consequence from treating young stands of pine in Sweden with birch bark extract, BBE. Treatment is to be done with the object to lower or fully reduce the moose browsing on pine. The study is made in three versions. The results from eac...
| Autor principal: | |
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| Formato: | L3 |
| Lenguaje: | sueco Inglés |
| Publicado: |
SLU/Dept. of Forest Economics
2007
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| Materias: |
| _version_ | 1855571986372100096 |
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| author | Torkelstam, Anna |
| author_browse | Torkelstam, Anna |
| author_facet | Torkelstam, Anna |
| author_sort | Torkelstam, Anna |
| collection | Epsilon Archive for Student Projects |
| description | The calculations in this thesis are evaluating the profit as a consequence from treating young stands of pine in Sweden with birch bark extract, BBE. Treatment is to be done with the object to lower or fully reduce the moose browsing on pine. The study is made in three versions. The results from each version separately will follow below.
Version I.: The size of the moose population is in no way affected by the reduced resources of food as a consequence of large scale treatment with BBE on pine. Results show profit at a 3 percent level of interest with the exception of treatment program with more than 4 treatments all together and with the exception of Västerbottens Län with an early first treatment.
Version II.: The population of moose decrease from 10 to 5 individuals per 1000 ha as a consequence from large scale treatment with BBE on young pine stands. Results show profit at a 3 percent level of interest with the exception of treatment program with more than 4 treatments all together and with the exception of Västerbottens Län with an early first treatment.
Results also show that treatment BBE will increase the profit compared to profit from stands that has not been treated with BBE. This is valid for both version I. and II.
Version III.: The effect of the substrate is let to vary from a reduction to 0 percent browsing to a non-reduction to 30 percent browsing. Results show profit at 3 percent interest when BBE only reduces the browsing from 30 to 15 percent. Compared to results presented above with a reduction to 0 percent.
Furthermore, for interests above 3 percent, for all versions, results show as follows. Within some treatment programs the negative net value is somewhat decreased but still negative after treatment with BBE. For every other situation treatments when calculating with a 4 or 5 percent interest is neither profitable nor responsible for decreasing an already negative net value. |
| format | L3 |
| id | RepoSLU12029 |
| institution | Swedish University of Agricultural Sciences |
| language | swe Inglés |
| publishDate | 2007 |
| publishDateSort | 2007 |
| publisher | SLU/Dept. of Forest Economics |
| publisherStr | SLU/Dept. of Forest Economics |
| record_format | eprints |
| spelling | RepoSLU120292017-11-13T12:29:04Z Björkbarksextrakt, BBE : en lönsam lösning på betningsproblematiken? Birch bark extract, BBE : a profitable solution to the moose browsing problem? Torkelstam, Anna repellent älg betning samhällsekonomiskt netto lönsamhet The calculations in this thesis are evaluating the profit as a consequence from treating young stands of pine in Sweden with birch bark extract, BBE. Treatment is to be done with the object to lower or fully reduce the moose browsing on pine. The study is made in three versions. The results from each version separately will follow below. Version I.: The size of the moose population is in no way affected by the reduced resources of food as a consequence of large scale treatment with BBE on pine. Results show profit at a 3 percent level of interest with the exception of treatment program with more than 4 treatments all together and with the exception of Västerbottens Län with an early first treatment. Version II.: The population of moose decrease from 10 to 5 individuals per 1000 ha as a consequence from large scale treatment with BBE on young pine stands. Results show profit at a 3 percent level of interest with the exception of treatment program with more than 4 treatments all together and with the exception of Västerbottens Län with an early first treatment. Results also show that treatment BBE will increase the profit compared to profit from stands that has not been treated with BBE. This is valid for both version I. and II. Version III.: The effect of the substrate is let to vary from a reduction to 0 percent browsing to a non-reduction to 30 percent browsing. Results show profit at 3 percent interest when BBE only reduces the browsing from 30 to 15 percent. Compared to results presented above with a reduction to 0 percent. Furthermore, for interests above 3 percent, for all versions, results show as follows. Within some treatment programs the negative net value is somewhat decreased but still negative after treatment with BBE. For every other situation treatments when calculating with a 4 or 5 percent interest is neither profitable nor responsible for decreasing an already negative net value. Beräkningarna i denna uppsats redogör för lönsamheten i att storskaligt behandla svenska tallbestånd med björkbarksextrakt, BBE, med avsikt att minska eller helt reducera älgars betning på tall. Studien är gjord i tre versioner. Nedan följer resultaten för vardera versionen. Version I.: Älgpopultionens storlek påverkas ej som följd av födobrist då tallplantor behandlas med BBE. Resultaten visar på lönsamhet vid 3 procent kalkylränta med undantag för behandlingsförfaranden med över 4 behandlingstillfällen samt med undantag för Västerbottens län vid tidig första behandling. Version II.: Älgpopulationen minskar från 10 till 5 älgar per 1000 ha i och med behandling med BBE. Resultaten visar på lönsamhet vid 3 procent kalkylränta med undantag för behandlingsförfaranden med över 4 behandlingstillfällen samt med undantag för Västerbottens län vid tidig första behandling. För både version I och II gäller ökad lönsamhet i jämförelse med nettot från motsvarande obehandlat bestånd vid 3 procent ränta. Version III.: Varierad effekt av substratet, betningsfrekvenser från 0 till 30 procent. Resultaten visar på lönsamhet vid 3 procent kalkylränta vid en reducering av betningsfrekvensen från 30 till 15 procent med undantag för Västebottens län. Jämför med tidigare presenterade resultat som avser reducering till 0 procent Vidare gäller för räntor högre än 3 procent, generellt för alla beräkningar, följande. För vissa förfaranden minskar det negativa nettot då man behandlar med BBE, nettot förblir dock negativt. I övrigt är behandling på 4 och 5 procent räntenivå varken lönsam eller bidragande till ett mindre negativt netto. SLU/Dept. of Forest Economics 2007 L3 swe eng https://stud.epsilon.slu.se/12029/ |
| spellingShingle | repellent älg betning samhällsekonomiskt netto lönsamhet Torkelstam, Anna Björkbarksextrakt, BBE : en lönsam lösning på betningsproblematiken? |
| title | Björkbarksextrakt, BBE : en lönsam lösning på betningsproblematiken? |
| title_full | Björkbarksextrakt, BBE : en lönsam lösning på betningsproblematiken? |
| title_fullStr | Björkbarksextrakt, BBE : en lönsam lösning på betningsproblematiken? |
| title_full_unstemmed | Björkbarksextrakt, BBE : en lönsam lösning på betningsproblematiken? |
| title_short | Björkbarksextrakt, BBE : en lönsam lösning på betningsproblematiken? |
| title_sort | björkbarksextrakt, bbe : en lönsam lösning på betningsproblematiken? |
| topic | repellent älg betning samhällsekonomiskt netto lönsamhet |