|
|
|
|
|
| Risku-Norja, Helmi; Hietala, Reija; Virtanen, Hanna; Ketomäki, Hanna; Helenius, Juha. |
| The potential for and environmental consequences of localising primary production of food were investigated by considering different food consumption patterns, based on conventional and organic production. Environmental impact was assessed according to agricultural land use and numbers of production animals, both of which depend on food consumption. The results were quantified in terms of nutrient balances, greenhouse gas and acid emissions and the diversity of crop cultivation, which indicate eutrophication of watersheds, climate change and landscape changes, respectively. The study region was able to satisfy its own needs for all farming and food consumption scenarios. Dietary choice had a marked impact on agricultural land use and on the... |
| Tipo: Journal paper |
Palavras-chave: Food systems. |
| Ano: 2008 |
URL: http://orgprints.org/16629/1/riskunorja.pdf |
| |
|
|
| Virtanen, Hanna; Nousiainen, Juha. |
| The calculation of whole-farm nutrient balance is an effective and simple method for estimating the potential nutrient loading from dairy farming into the environment. In Finland, however, the published results based on larger number of farms are still lacking. In this study whole-farm nitrogen (N) and phosphorus (P) balances on Finnish dairy farms were studied based on short-cut data for the year 2002. The survey was targeted to 1260 dairy farms, located all over Finland. Of the 386 replies received, 319 were used for subsequent statistical analyses. The association between selected farm variables and nutrient balance was studied using regression analysis and a sensitivity coefficient was calculated for each regression slope. The average (± standard... |
| Tipo: Journal paper |
Palavras-chave: Animal husbandry. |
| Ano: 2005 |
URL: http://orgprints.org/17090/1/virtanen.pdf |
| |
|
|
|
