Characteristics of Nutrient Load in a Stream Flowing through a Livestock Farm during Spring Snowmelt (Environment)
スポンサーリンク
概要
- 論文の詳細を見る
We investigated the stream water quality during the snowmelt period in a livestock farm, located in Shizunai, southern Hokkaido, Japan. The water quality was very different between the early stage of the snowmelt period (March 15-21) and the later stage (March 22-April 5) in 2001. The load of nutrients (NH^+_4-N, T-P, K^+) was large along with the increase of the flow rate and nutrient concentrations during the early stage of the snowmelt period. The molar ratios of Si/T-N and Si/T-P of the stream water, as an index of eutrophication, were also under the threshold values (2.7, 64.3, respectively) during the early stage of the snowmelt period. In addition, the relationship between the Si and nutrient concentrations (NH^+_4-N, T-P, K^+) showed a significantly negative correlation (R^2=0.65), which indicated that the amount of nutrient load might be derived from surface runoff. Consequently both the quantity and quality of the stream water during snowmelt may exert an adverse effect on coastal waters, leading to eutrophication. Furthermore, since the main effluent source appeared to be surface runoff at the early stage of the snowmelt period, attention should be paid to land management before and during the snow covering period.
- 社団法人日本土壌肥料学会の論文
著者
-
Hatano Ryusuke
Graduate School of Agriculture, Hokkaido University
-
Hayakawa Atsushi
Laboratory Of Soil Science Graduate School Of Agriculture Hokkaido University:(present Office)depart
-
Hayakawa Atsushi
Graduate School Of Agriculture Hokkaido University:department Of Biological Environment Faculty Of B
-
KURAMOCHI Kanta
Graduate School of Agriculture, Hokkaido University
-
Nagumo Toshiyuki
Graduate School of Agriculture, Hokkaido University
-
Hatano Ryusuke
Graduate School Of Agriculture Hokkaido Univ.
-
Nagumo T
Laboratory Of Soil Science Graduate School Of Agriculture Hokkaido University:(present Office)facult
-
Nagumo Toshiyuki
Graduate School Of Agriculture Hokkaido University
-
Kuramochi Kanta
Laboratory Of Soil Science Graduate School Of Agriculture Hokkaido University
関連論文
- 29 GHG emission from different stages of thermokarst in Central Yakutia, Russia
- Clear increases in acetylene reduction by soil bacteria from an East Siberian Taiga forest bed under conditions mimicking the natural soil environment(Soil Biology)
- Hydrological process controls on nitrogen export during storm events in an agricultural watershed
- Nitrogen budget and relationships with riverine nitrogen exports of a dairy cattle farming catchment in eastern Hokkaido, Japan
- Assessment of river water quality during snowmelt and base flow periods in two catchment areas with different land use
- 23-14 Comparative assessment of river water quality between snowmelt and base flow events in two catchments of differed land use system in eastern Hokkaido
- 1-27 Evaluating stream water quality through land use analysis and nitrogen budget approaches in dairy cattle farming areas, eastern Hokkaido
- 23-26 Evaluating impact of paddy fields on stream water N concentration in Central Hokkaido
- 23-40 Impact of Livestock Husbandry Practice on Nitrogen Cycle and Nitrogen Concentration in Stream Water
- Evaluating impact of land use and N budgets on stream water quality in Hokkaido, Japan
- N_2O and CH_4 fluxes from a volcanic grassland soil in Nasu, Japan : Comparison between manure plus fertilizer plot and fertilizer-only plot(Environment)
- New method for the estimation of nitrous oxide emission rates from an agricultural watershed(Environment)
- Changes in Net Ecosystem Production Associated with Forest Fire in Taiga Ecosystems, Near Yakutsk, Russia (Environment)
- Comparison of Needle Mass Density in The Tree Crowns of Larix gmelinii and Larix kaempferi Trees
- Soil Respiration in Siberian Taiga Ecosystems with Different Histories of Forest Fire
- Comparison of the closed-chamber and gas concentration gradient methods for measurement of CO_2 and N_2O fluxes in two upland field soils(Environment)
- Effects of agricultural land-use change and forest fire on N_2O emission from tropical peatlands, Central Kalimantan, Indonesia(Environment)
- Nitrous oxide and nitric oxide fluxes from cornfield, grassland, pasture and forest in a watershed in Southern Hokkaido, Japan(Environment)
- Three years of nitrous oxide and nitric oxide emissions from silandic andosols cultivated with maize in Hokkaido, Japan(Environment)
- Assessing the impact of phosphorus cycling on river water P concentration in Hokkaido
- Evaluating river water quality through land use analysis and N budget approaches in livestock farming areas
- Evaluating the Contribution of Point and Non-Point Sources of Nitrogen Pollution in Stream Water in a Rural Area of Central Hokkaido, Japan(Environment)
- Evaluation of the Impact of Paddy Fields on Stream Water Nitrogen Concentration in Central Hokkaido(Environment)
- Magnitude of Nitrogen Pollution in Stream Water due to Intensive Livestock Farming Practices
- 36 Hydrological controls on temporal patterns of N sensitivity to climate in three adjacent watersheds
- 1-18 The impact of land use and climate on Nitrogen export and water quality
- Evaluation of the soil carbon budget under different upland cropping systems in central Hokkaido, Japan(Environment)
- Eco-balance analysis of six agricultural land uses in the Ikushunbetsu watershed(Greenhouse Gas Emissions from Agroecosystems in Monsoon Asia)
- Greenhouse gas fluxes from agricultural soils under different crops in Central Hokkaido
- 34 Soil nitrification and denitrification from different aggregated soil
- 1-21 Soil nitrification and denitrification from different moisture content of aggregated soil
- Soil Respiration and Net Ecosystem Production in an Onion Field in Central Hokkaido, Japan(Environment)
- Dissolved N_2O, CH_4, and CO_2 Emissions from Subsurface-Drainage in a Structured Clay Soil Cultivated with Onion in Central Hokkaido, Japan (Soil Physics)
- Effect of Nitrogen Fertilization on Methane Flux in a Structured Clay Soil Cultivated with Onion in Central Hokkaido, Japan
- Dissolved N_2O, CH_4, and CO_2 in Pipe Drainage, Seepage, and Stream Water in a Livestock Farm in Hokkaido, Japan
- 27 Assessing the Relationships between Pore Structural Indices and CO_2, CH_4, NO and N_2O Fluxes in Various Ecosystems
- 1-1 Assessing the Relationship between Greenhouse Gases Emissions and Soil Chemical and Physical Properties.
- Characteristics of Nutrient Load in a Stream Flowing through a Livestock Farm during Spring Snowmelt (Environment)
- 24-24 Effect of nitrogen fertilizer on methane flux in a structured clay soil
- 23-15 Evaluating Impact of Land Use and Nitrogen Budgets at Community Scale on Stream Water Quality in Hokkaido, Japan
- Detection of Nitrate Leaching through Bypass Flow Using Pan Lysimeter, Suction Cup, and Resin Capsule
- 29 Application of SWAT model to understand the baseflow components of river discharge in a groundwater recharging
- Coupled control of land use and topography on nitrate-nitrogen dynamics in three adjacent watersheds
- Spatial variation of denitrification potential of grassland, windbreak forest, and riparian forest soils in an agricultural catchment in eastern Hokkaido, Japan
- P23-13 Evaluating spatial and temporal variation in global warming potential (GWP) at a regional scale in Ikushunbetsu river watershed, Hokkaido Japan
- P1-5 Estimating external water contribution to a non-conservative watershed with SWAT model
- The effect of fertilizer and manure application on CH_4 and N_2O emissions from managed grasslands in Japan(Mitigation of methane and nitrous oxide emissions from agricultural lands)
- 10 Effect of soil structure and soil nutrient status on N_2O production