Nitrogen dynamics in soil amended with manures composted in dynamic and static systems

Escudero, Ania; González-Arias, Ander; Hierro, Ó. del; Pinto, M.; Gartzia-Bengoetxea, Nahia

doi:10.1016/j.jenvman.2012.04.046

Cited by 16 publications

(8 citation statements)

References 37 publications

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“…Although the summer season in years 2002, 2003 and 2006 were extraordinarily dry, daily and monthly precipitation observations in recent years have shown very wet conditions over Finland (Ylhäisi et al, 2010). Major environmental consequences of such changes in extreme precipitation include soil erosion (Marttila and Kløve, 2010), intensification of chemical leaching (Escudero et al, 2012), increased risk of floods (Milly et al, 2002;Yan and Moradkhani, 2015), early summer droughts, and declines in both surface and groundwater levels (Okkonen and Kløve, 2010). For example, summer droughts in Finland during the years 2002-2003 caused a reduction of the hydropower generation and thereby large economic losses (Silander and Järvinen, 2004).…”

Section: Introductionmentioning

confidence: 99%

Analysing the variability and trends of precipitation extremes in Finland and their connection to atmospheric circulation patterns

Irannezhad

Chen

Kløve

et al. 2017

Intl Journal of Climatology

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Ten precipitation indices recommended by the Expert Team on Climate Change Detection and Indices were used to analyse spatial distribution and temporal changes in annual amount, intensity, frequency and duration of precipitation statistics based on daily data with a focus on extremes in Finland during 1961–2011. Also, the connections between these high resolution (10 km) precipitation indices and six influential atmospheric circulation patterns (ACPs) for climate variability in Finland were studied. On the country scale, the results suggest significant increases in the amount and intensity of precipitation extremes, more precipitation days, and no clear changes in wet and dry spells. Both intensity and frequency of precipitation extremes over Finland decrease from south and southwest to north. The only exception is the distribution of precipitations days which is generally more frequent over eastern and upper areas of northern Finland. Wet (dry) spells were typically longer in the western (eastern) part of Finland. Significant increases in annual total wet‐day precipitation, very wet days precipitation and simple daily intensity index were found over most parts of Finland during 1961–2011. Increasing trends in both extremely wet days and maximum 1‐day precipitation were mostly observed in western, eastern, central and northern Finland. Such spatial pattern was also identified for significant increases in the frequency of heavy and very heavy precipitation days. The precipitation days increased over small parts of western, eastern and northern Finland. Wet spells showed lengthening trends in several grids over southwestern Finland, while dry spells lengthened in some areas over the entire country except southern parts. These variations in precipitation statistics were found to be significantly correlated with the East Atlantic/West Russia, East Atlantic, Scandinavia and Polar patterns.

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Section: Introductionmentioning

confidence: 99%

Analysing the variability and trends of precipitation extremes in Finland and their connection to atmospheric circulation patterns

Irannezhad

Chen

Kløve

et al. 2017

Intl Journal of Climatology

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“…By contrast, in semi-natural grasslands and temporary grasslands, such as cereal crops and annual forage crops, both roots and rhizodeposition were estimated as annual biomass production. Finally, C:N ratio index equal to 13.4 (Escudero et al, 2012) was used for estimating the amount of C input derived from sheep manure during grazing.…”

Section: Accepted Papermentioning

confidence: 99%

How does soil carbon sequestration affect greenhouse gas emissions from a sheep farming system? Results of a life cycle assessment case study

et al. 2021

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Highlights Extensification of dairy sheep systems provides an environmental benefit when soil C sequestration is considered. Extensification of dairy sheep systems determines lower environmental impact per hectare of utilized agricultural area. Enteric methane emissions are the main source of GHG emissions of the sheep milk life cycle. Carbon sequestration in permanent grasslands can considerably contribute to climate change mitigation. Abstract A life cycle assessment (LCA) study of a transition from semi-intensive to semi-extensive Mediterranean dairy sheep farm suggests that the latter has a strong potential for offsetting greenhouse gas (GHG) emissions through the soil C sequestration (Cseq) in permanent grasslands. The extensification process shows clear environmental advantage when emission intensity is referred to the area-based functional unit (FU). Several LCA studies reported that extensive livestock systems have greater GHG emissions per mass of product than intensive one, due to their lower productivity. However, these studies did not account for soil Cseq of temporary and permanent grasslands, that have a strong potential to partly mitigate the GHG balance of ruminant production systems. Our LCA study was carried out considering the transition from a semi-intensive (SI) towards a semi-extensive (SE) production system, adopted in a dairy sheep farm located in North-Western Sardinia (Italy). Impact scope included enteric methane emissions, feed production, on-farm energy use and transportation, infrastructures as well as the potential C sink arising from soil Cseqwith respect to the emission intensity. In order to provide a more comprehensive analysis, we used the following FUs: 1 kg of fat and protein corrected milk (FPCM) and 1 ha of utilised agricultural area (UAA). We observed that the extensification of production system determined contrasting environmental effects when using different FUs accounting for soil Cseq. When soil Cseq in emission intensity estimate was included, we observed slightly lower values of GHG emissions per kg of FPCM in the SI production system (from 3.37 to 3.12 kg CO2 equivalents – CO2-eq), whereas a greater variation we observed in the SE one (from 3.54 to 2.90 kg CO2-eq). Considering 1 ha of UAA as FU and including the soil Cseq, the emission intensity in SI moved from 6,257 to 5,793 kg CO2-eq, whereas values varied from 4,020 to 3,299 kg CO2-eq in SE. These results indicated that the emission intensity from semi-extensive Mediterranean dairy sheep farms can be considerably reduced through the soil Cseq, although its measurement is influenced by the models used in the estimation.

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“…C:N relationship of sheep manure is 13.4, and in sheep compost the number is taken from Escudero et al (2012), (Table 5) 2.4. Statistical analysis Statistical analyses were performed using ANOVA in the R software system to test for possible significant differences between the three groups (SIF, SIL and SEL) using a pvalue of 0.05 as threshold.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Carbon footprint of milk from sheep farming systems in Northern Spain including soil carbon sequestration in grasslands

Batalla

Knudsen

Mogensen

et al. 2015

Journal of Cleaner Production

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Nitrogen dynamics in soil amended with manures composted in dynamic and static systems

Cited by 16 publications

References 37 publications

Analysing the variability and trends of precipitation extremes in Finland and their connection to atmospheric circulation patterns

Analysing the variability and trends of precipitation extremes in Finland and their connection to atmospheric circulation patterns

How does soil carbon sequestration affect greenhouse gas emissions from a sheep farming system? Results of a life cycle assessment case study

Carbon footprint of milk from sheep farming systems in Northern Spain including soil carbon sequestration in grasslands

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