Abstract
This paper deals with environmental effects of producing and combusting energy forest fuel. Energy forest means short rotation willow (Salix). Supposed effects of sewage sludge application are discussed as well. Energy forestry on agricultural land implies both advantages and disadvantages for the environment. Leaf litter (humified leaves) increases the humus content in the top soil. The soil fauna is also positively affected. Until now performed studies about nitrogen leakage from fields cultivated with energy forest (Salix), have not given any distinct results. A retarded drainage within energy forest fields is on the other hand noticed. While the root system of Salix is active during a long period of the year, the nitrogen leakage become less compared to traditional cultivation. The content of plant nutrients and organic matter in sewage sludge make a resource that can be useful for agricultural purposes, especially for energy forest cultivation. The content of heavy metals and organic emissions contradicts sludge application to agricultural land. Sewage sludge with todays quality increases somewhat the content of heavy metals in the soil. This condition can be counteracted to a certain extent by growing energy forest. It has been established that Salix has high ability to heavy metal uptake,
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Frank, K
[1]
- Swedish Univ of Agricultural Sciences, Uppsala (Sweden). Dept. of Agricultural Egineering
Citation Formats
Frank, K.
Environmental effects of energy forest (short rotation willow). Aspects on cultivation, sludge application and combustion; Energiskogens miljoekonsekvenser; Aspekter paa odling, slamgoedsling och foerbraenning.
Sweden: N. p.,
1994.
Web.
Frank, K.
Environmental effects of energy forest (short rotation willow). Aspects on cultivation, sludge application and combustion; Energiskogens miljoekonsekvenser; Aspekter paa odling, slamgoedsling och foerbraenning.
Sweden.
Frank, K.
1994.
"Environmental effects of energy forest (short rotation willow). Aspects on cultivation, sludge application and combustion; Energiskogens miljoekonsekvenser; Aspekter paa odling, slamgoedsling och foerbraenning."
Sweden.
@misc{etde_10151213,
title = {Environmental effects of energy forest (short rotation willow). Aspects on cultivation, sludge application and combustion; Energiskogens miljoekonsekvenser; Aspekter paa odling, slamgoedsling och foerbraenning}
author = {Frank, K}
abstractNote = {This paper deals with environmental effects of producing and combusting energy forest fuel. Energy forest means short rotation willow (Salix). Supposed effects of sewage sludge application are discussed as well. Energy forestry on agricultural land implies both advantages and disadvantages for the environment. Leaf litter (humified leaves) increases the humus content in the top soil. The soil fauna is also positively affected. Until now performed studies about nitrogen leakage from fields cultivated with energy forest (Salix), have not given any distinct results. A retarded drainage within energy forest fields is on the other hand noticed. While the root system of Salix is active during a long period of the year, the nitrogen leakage become less compared to traditional cultivation. The content of plant nutrients and organic matter in sewage sludge make a resource that can be useful for agricultural purposes, especially for energy forest cultivation. The content of heavy metals and organic emissions contradicts sludge application to agricultural land. Sewage sludge with todays quality increases somewhat the content of heavy metals in the soil. This condition can be counteracted to a certain extent by growing energy forest. It has been established that Salix has high ability to heavy metal uptake, especially cadmium. Growing energy forest on drained farm land is connected with a risk for root penetration into the drainage system. With enough water and plant nutrients in the top soil the risk is reduced. Shallow depth of the pipes increases the risk. Combustion of wood chip from energy forests (and other types of biomass) gives especially two advantages. It does not give any net contribution of carbon dioxide to the atmosphere. The sulphur discharge will be minimal since the sulphur content in wood fuels is low. Discharge of nitrogen oxide and hydrocarbons may give some problems. These can be reduced by technological measures when combusting. 27 refs, 4 tabs}
place = {Sweden}
year = {1994}
month = {May}
}
title = {Environmental effects of energy forest (short rotation willow). Aspects on cultivation, sludge application and combustion; Energiskogens miljoekonsekvenser; Aspekter paa odling, slamgoedsling och foerbraenning}
author = {Frank, K}
abstractNote = {This paper deals with environmental effects of producing and combusting energy forest fuel. Energy forest means short rotation willow (Salix). Supposed effects of sewage sludge application are discussed as well. Energy forestry on agricultural land implies both advantages and disadvantages for the environment. Leaf litter (humified leaves) increases the humus content in the top soil. The soil fauna is also positively affected. Until now performed studies about nitrogen leakage from fields cultivated with energy forest (Salix), have not given any distinct results. A retarded drainage within energy forest fields is on the other hand noticed. While the root system of Salix is active during a long period of the year, the nitrogen leakage become less compared to traditional cultivation. The content of plant nutrients and organic matter in sewage sludge make a resource that can be useful for agricultural purposes, especially for energy forest cultivation. The content of heavy metals and organic emissions contradicts sludge application to agricultural land. Sewage sludge with todays quality increases somewhat the content of heavy metals in the soil. This condition can be counteracted to a certain extent by growing energy forest. It has been established that Salix has high ability to heavy metal uptake, especially cadmium. Growing energy forest on drained farm land is connected with a risk for root penetration into the drainage system. With enough water and plant nutrients in the top soil the risk is reduced. Shallow depth of the pipes increases the risk. Combustion of wood chip from energy forests (and other types of biomass) gives especially two advantages. It does not give any net contribution of carbon dioxide to the atmosphere. The sulphur discharge will be minimal since the sulphur content in wood fuels is low. Discharge of nitrogen oxide and hydrocarbons may give some problems. These can be reduced by technological measures when combusting. 27 refs, 4 tabs}
place = {Sweden}
year = {1994}
month = {May}
}