The effect of cultivation with reed canary grass on methane emissions from different Danish wet agricultural peatlands and the correlation with biogeochemical soil properties

2021 ◽  
Author(s):  
Claudia Nielsen ◽  
Lars Elsgaard ◽  
Uffe Jørgensen ◽  
Poul Erik Lærke
Keyword(s):  
Mineralogical Composition ◽  
Groundwater Table ◽  
Temperate Grassland ◽  
Ecosystem Functions ◽  
Reed Canary Grass ◽  
Annual Average ◽  
Flux Dynamics ◽  
Climate Conditions ◽  
Canary Grass ◽  
Ghg Fluxes

<p>Drainage of peatlands for agriculture causes substantial degradation and finally loss, including associated ecosystem functions, but also creates emission hotspots of carbon dioxide (CO<sub>2</sub>). Mean CO<sub>2</sub> emission from drained temperate grassland on peat was reported by IPCC as 22.4 (18.3-26.7) Mg<br>CO<sub>2</sub>-eq ha<sup>-1</sup> y<sup>-1</sup> (95% CI) while methane (CH<sub>4</sub>) emissions were close to zero. Rewetting of peatlands reduces CO<sub>2</sub> emissions while at the same time favouring CH<sub>4 </sub>emissions. From wet or rewetted nutrient-rich grassland, emissions of CO<sub>2</sub> and CH<sub>4</sub> were reported by IPCC as 1.8 (-2.8-2.8) and<br>9.8 (0-39) Mg CO<sub>2</sub>-eq ha<sup>-1</sup> y<sup>-1</sup>, respectively (GWP CH<sub>4 </sub>= 34). The uncertainties of the estimates reflect the large variation among the reported studies, which could be caused by different climate conditions, vegetation, groundwater table (GWT), peat composition and biogeochemistry. A mesocosm experiment was established to assess biogeochemical causes of variation in CO<sub>2</sub> and CH<sub>4</sub> flux dynamics under controlled GWT for peatsoils derived from five different Danish bogs and fens. A total number of 75 mesocosms were grouped into three treatments: GWT -40 cm, bare; GWT -5 cm, bare; and GWT -5 cm, cultivated with reed canary grass (RCG). GHG fluxes were measured using opaque chambers at biweekly intervals from July 2019 to 2020 and extrapolated to annual values. Preliminary results indicate significant differences regarding CO<sub>2</sub> and CH<sub>4</sub> fluxes across all sites and depending on soil biogeochemical and physical properties. Rewetting raised the contribution of CH<sub>4</sub> most on soils from Store Vildmose and Vejrumbro with 1.9 to 12.9 t CO<sub>2</sub>eq ha<sup>-1</sup> yr<sup>-1</sup> and 0.1 to 5.7 t CO<sub>2</sub>eq ha<sup>-1</sup> yr<sup>-1</sup>, respectively. On an annual average, these high emissions were with 69 % and 48 % mitigated by the cultivation of RCG in a paludiculture scenario. Further, the results show that CH<sub>4</sub> spikes of up to 37.5 mg m<sup>-2</sup> h<sup>-1</sup> at elevated GWT during warmer summer months may be mitigated by cultivation with RCG, with maximum peaks of 2.1 mg m<sup>-2</sup> h<sup>-1</sup>. Soil analyses highlighted distinct differences in the soil mineralogical composition across sites and soil depths.</p>

Bare soil and reed canary grass ecosystem respiration in peat extraction sites in Eastern Finland

Tellus B ◽  
2008 ◽  
Vol 60 (2) ◽  
Author(s):  
N. J. Shurpali ◽  
N. P. Hyvönen ◽  
J. T. Huttunen ◽  
C. Biasi ◽  
H. Nykänen ◽  
...  
Keyword(s):  
Ecosystem Respiration ◽  
Bare Soil ◽  
Reed Canary Grass ◽  
Peat Extraction ◽  
Canary Grass ◽  
Eastern Finland

scholarly journals Pleistocene Deposits in the Southern Egyptian Sahara: Lithostratigraphic Relationships of Sediments and Landscape Dynamics at Bir Tarfawi

2017 ◽  
Vol 34 (1) ◽  
pp. 23-38
Author(s):  
Christopher L. Hill ◽  
Romuald Schild
Keyword(s):  
Groundwater Table ◽  
Middle Pleistocene ◽  
Middle Paleolithic ◽  
Stratigraphic Sequence ◽  
Climate Conditions ◽  
Green Lake ◽  
Wet Climate ◽  
Topographic Depressions ◽  
Hydrologic Conditions ◽  
Basin Fill

Abstract The sedimentological and lithostratigraphic record from north-central Bir Tarfawi documents the presence of Pleistocene basin-fill deposits. Three topographic basins were created as a result of deflation during climate episodes associated with lowering of the local groundwater table. In each case, the three deflational basins or topographic depressions were subsequently filled with sediments; these basin aggradations coincided with changes from arid climate conditions to wetter conditions and a rise in the groundwater table. The oldest and highest sedimentary remnant is associated with Acheulian artifacts and may reflect spring-fed pond and marsh conditions during a Middle Pleistocene wet climate episode. Lithofacies for a lower stratigraphic sequence (the “White Lake”) documents deposition in a perennial lake that varied in extent and depth and is associated with Middle Paleolithic artifacts. A third episode of deflation created a topographic low that has been filled with Late Pleistocene sediments that are associated with Middle Paleolithic artifacts and fossil remains. Lateral and vertical variations in the lithofacies of this basin-fill sequence and the sediments of the “grey-green” lake phases provide a record of changing hydrologic conditions. These hydrologic conditions appear to reflect variations in water-table levels related to groundwater recharge and, at times, local rains.

The effects of a permanently elevated water table in an acid sulphate soil on reed canary grass for combustion

2013 ◽  
Vol 375 (1-2) ◽  
pp. 149-158 ◽  
Author(s):  
Kenedy E. Epie ◽  
Seija Virtanen ◽  
Arja Santanen ◽  
Asko Simojoki ◽  
Frederick L. Stoddard
Keyword(s):  
Water Table ◽  
Reed Canary Grass ◽  
Acid Sulphate Soil ◽  
Acid Sulphate ◽  
Elevated Water Table ◽  
Canary Grass ◽  
Elevated Water

scholarly journals Assessment and Characterization of Reed Canary Grass Plantations for Energy

2021 ◽  
Author(s):  
Blas Mola ◽  
Xiaoqian Xu ◽  
Oskar Englund ◽  
Ioannis Dimitriou
Keyword(s):  
Land Use ◽  
Frost Tolerance ◽  
High Yield ◽  
Reed Canary Grass ◽  
Land Use Patterns ◽  
Use Patterns ◽  
Alternative Crop ◽  
Canary Grass ◽  
Policy Incentives

Research Highlights: (1) Reed canary grass (RCG) is analysed in Sweden compared to willow and poplar for 2001-2020 (2) Each crop presents a different land-use and climatic profile (3) Average yield records of reed canary grass are similar to willow and poplar (4) There are divergences between trial-based and commercial yields (5) Existing LUC patterns suggest meadow>RCG and RCG>cereal (6) RCG land area is very sensitive to policy incentives. Background and objectives: RCG is an alternative crop for biomass-to-energy due to high yield and frost tolerance. We assess the cultivation in Sweden by using an extensive compilation of data, with emphasis on the extension of the cultivation, areas planted, climatic profile, land use patterns and yield levels. Material and methods: All RCG plantations are analysed for 2001-2020. A geostatistical analysis is performed to characterize where is cultivated and the land uses associated. Climatic, productivity and yield profiles are compared to willow and poplar plantations, from experiments and from commercial plantations. Results: The results show that the cultivation of reed canary grass expanded after 2005, with a maximum of 800 ha in 2009 to then decrease to the current levels of about 550 ha. It is mainly grown in colder climatic areas, with lower agricultural productivity than willow and poplar. Mean yields from trials are 6 odt ha-1 yr-1; commercial yields are 3.5 odt ha-1 yr-1. RCG replace meadow land and is replaced by cereals, when abandoned. Conclusions: Reed canary grass is an interesting alternative, growing on colder areas but on similar yield levels than other energy crops. The cultivation is more sensitive to policy incentives

scholarly journals Non-wood plants as raw material for pulp and paper

2001 ◽  
Vol 10 (Supplement) ◽  
Author(s):  
K. SAIJONKARI-PAHKALA
Keyword(s):  
Tall Fescue ◽  
Mineral Content ◽  
Clay Soil ◽  
Organic Soil ◽  
Fertilizer Application ◽  
Climatic Conditions ◽  
Raw Material ◽  
Reed Canary Grass ◽  
Application Rates ◽  
Canary Grass

This study was begun in 1990 when there was a marked shortage of short fibre raw material for the pulp industry. During the last ten years the situation has changed little, and the shortage is still apparent. It was estimated that 0.5 to 1 million hectares of arable land would be set aside from cultivation in Finland during this period. An alternative to using hardwoods in printing papers is non-wood fibres from herbaceous field crops. The study aimed at determining the feasibility of using non-wood plants as raw material for the pulp and paper industry, and developing crop management methods for the selected species. The properties considered important for a fibre crop were high yielding ability, high pulping quality and good adaptation to the prevailing climatic conditions and possibilities for low cost production. A strategy and a process to identify, select and introduce a crop for domestic short fibre production is described in this thesis. The experimental part of the study consisted of screening plant species by analysing fibre and mineral content, evaluating crop management methods and varieties, resulting in description of an appropriate cropping system for large-scale fibre plant production. Of the 17 herbaceous plant species studied, monocotyledons were most suitable for pulping. They were productive and well adapted to Finnish climatic conditions. Of the monocots, reed canary grass (Phalaris arundinacea L.) and tall fescue (Festuca arundinacea Schreb.) were the most promising. These were chosen for further studies and were included in field experiments to determine the most suitable harvesting system and fertilizer application procedures for biomass production. Reed canary grass was favoured by delayed harvesting in spring when the moisture content of the crop stand was 10-15% of DM before production of new tillers. When sown in early spring, reed canary grass typically yielded 7-8 t ha-1 within three years on clay soil. The yield exceeded 10 t ha-1 on organic soil after the second harvest year. Spring harvesting was not suitable for tall fescue and resulted in only 37-54% of dry matter yields and in far fewer stems and panicles than harvested during the growing season. The economic optimum for fertilizer application rate for reed canary grass ranged from 50 to 100 kg N ha-1 when grown on clay soil and harvested in spring. On organic soil the fertilizer rates needed were lower. If tall fescue is used for raw material for paper, fertilizer application rates higher than 100 kg N ha-1 were not of any additional benefit. It was possible to decrease the mineral content of raw material by harvesting in spring, using moderate fertilizer application rates, removing leaf blades from the raw material and growing the crop on organic soil. The fibre content of the raw material increased the later the crop was harvested, being highest in spring. Removing leaf blades and using minimum fertilizer application rates in-creased the fibre content of biomass.;

scholarly journals Controlling dietary cation-anion differences in forages by chloride fertilisation

2020 ◽  
Vol 29 (1) ◽  
Author(s):  
Lars Nesheim ◽  
Olav Martin Synnes ◽  
Arvid Steen ◽  
Anne Langerud ◽  
Anne Kjersti Bakken
Keyword(s):  
Dairy Cows ◽  
Developmental Stages ◽  
Field Trials ◽  
Reed Canary Grass ◽  
Forage Production ◽  
Meadow Fescue ◽  
Milk Fever ◽  
Western Norway ◽  
Canary Grass ◽  
The Ideal

Rations with low to negative dietary cation-anion difference (DCAD) given to dairy cows before calving reduce the risk of hypocalcaemia (milk fever). Different strategies for increasing forage DCAD were investigated in field trials in Central and Western Norway. Fertilisation with 70, 140 or 210 kg Cl per hectare as calcium chloride and low supply rates of K reduced DCAD in forage harvested at late developmental stages in spring growth of timothy and meadow fescue. The ideal negative DCAD was only attained on soils very low in plant available K. Timing (spring versus late spring) and source of Cl (CaCl2 versus MgCl2) were of no importance for the result. When pure stands of seven grasses were fertilised in spring either without chloride or with 140 kg chloride per hectare, the lowest values of DCAD after chloride fertilisation were found in perennial ryegrass and reed canary grass. By comparison, cocksfoot had equally high or higher Cl concentrations in its tissues, but accumulated more K, and seemed to be poorly suited for low DCAD forage production. It was concluded that Cl fertilisation is a more efficient means of controlling DCAD than sward species composition.

scholarly journals Evaluation of Biogas Collection from Reed Canary Grass, Depending on Nitrogen Fertilisation Levels

2012 ◽  
Vol 33 (4) ◽  
pp. 697-701 ◽  
Author(s):  
Anna Kacprzak ◽  
Mariusz Matyka ◽  
Liliana Krzystek ◽  
Stanisław Ledakowicz
Keyword(s):  
Energy Production ◽  
Fossil Fuels ◽  
New Technologies ◽  
Renewable Energy Sources ◽  
Weather Conditions ◽  
Reed Canary Grass ◽  
Nitrogen Fertilisation ◽  
Biogas Yield ◽  
Biogas Plants ◽  
Canary Grass

The world in 21st century is facing the problem of growing energy consumption while the supply of fossil fuels is being reduced. This resulted in the development of research into the use of renewable energy sources and development of new technologies for energy production. In Polish conditions the development of agricultural biogas plants finds its legitimacy in the document developed by the Ministry titled "Trends in agricultural biogas plants in Poland in 2010-2020”. The purpose of this study was to investigate the influence of the weather conditions and the degree of nitrogen fertilisation on yield of reed canary grass (Phalaris Arundinacea L.) and to determine their susceptibility to anaerobic digestion, and usefulness of the production of biogas. Carried out experiments showed that increasing nitrogen fertilisation (from 40 to 120 kg N/ha) linearly increased canary grass green biomass yield from 32 to 46.3 t/ha. However, the highest biogas yield 126 m3/ha was obtained when 80 kg N/ha was applied.

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