Our new LCA paper explores the effect of management on the climate impact of wood products.

The results show that switching to fewer thinnings and longer rotation can produce negative emissions.

Collecting residues for biofuel has minimal effect on C stock.
www.sciencedirect.com/science/arti...

Maaperän hiilivarastojen muutosten ja hiiliviljelyn huomioiminen ruokatuotteiden elinkaariarvioinnissa, sekä muu viimeaikainen LCA-menetelmäkehitys olivat aiheina @luke.fi toteuttaman Modi-LCA -projektin loppuseminaarissa.

Seminaarin tallenne löytyy nyt YouTubesta:
www.youtube.com/watch?v=jyMH...

How will the carbon sinks of forests develop in the future?

The answer is clear: in the long term, they can only decrease.

The explanation for the reduction in sinks can be found in the images below, which I will examine more closely in this thread.

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Mihin metsien hiilinielut hävisivät? Osa 2.

Tällä kertaa havainnollistan nielujen dynamiikkaa Luonnonvarakeskuksen tuottaman kasvihuonekaasuinventaarion tulosten avulla (kuvassa).

Tarkempaa analyysiä löytyy alla olevassa ketjussa.

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Mihin metsien hiilinielut hävisivät? Havainnollistan asiaa alla olevassa ketjussa, tällä kertaa yksinkertaisen differentiaaliyhtälön avulla (kuvassa). Yhtälö kuvaa periaatteessa mitä tahansa dynaamista systeemiä, mukaan lukien puuston, maaperän ja puutuotteiden hiilinielut.
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Our new paper shows that the applying biochar in growing media used in mine closures can create negative GHG emissions. However, high cost of the biochar-based solution remains a challenge.
www.sciencedirect.com/science/arti...

In this new report, we systematically review existing LCA approaches and international standards for environmental footprint for food products, in order to harmonize the public external communication to consumers and other stakeholders.
jukuri.luke.fi/items/bb3b7b...

In our new article, we utilize the LCA methodology to quantify the climate benefits of sawdust-based bioethanol in the EU. The LULUC-related GHG emissions and removals are also included in the analysis, utilizing the data from the national GHG inventories.
sciencedirect.com/science/arti...

Väärinkäsitykset hiilinielukeskustelussa johtuvat enimmäkseen siitä, että metsien kasvudynamiikkaa ei täysin ymmärretä. Siksi olenkin usein havainnollistanut nielujen kehitystä tämän valtakunnan metsien inventointiin perustuvan kuvan avulla. Asiasta enemmän alla olevassa ketjussa.
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In this new, open access article, I compare the GHG emissions of modern fast and slow growing broiler genotypes, and also explore the reasons why some genotypes have higher feed efficiency than some others.
www.sciencedirect.com/science/arti...

Carbon opportunity cost approach may result in double counting in environmental footprinting.

Our new, open access commentary and discussion article has now been published in The International Journal of Life Cycle Assessment.
link.springer.com/article/10.1...

Comparing the environmental impacts of food items with different nutritional functions is a complicated task. In this article, we present an LCA method that can take the differences in the functionality of food items into account in such comparisons. Open access, now published online:
rdcu.be/eil6H

Are wood-based products, such as biofuels, carbon neutral, carbon negative or carbon positive? It depends on the origin of the raw material.

Our new article provides a methodology for handling the regional LULUC emissions and removals in LCA for bio-based products.
link.springer.com/article/10.1...

Our new publication: chapter "Life cycle assessment (LCA) of poultry meat production", has now been published as part of the book "Improving poultry meat safety and sustainability".

The chapter can be downloaded free of charge from the publisher's website:
shop.bdspublishing.com/store/bds/de...

Why did Finland's forests change from a carbon sink to a permanent source of emissions in a few years? The reason is simple: emissions from the soil increased exponentially.

But what caused this explosion? There are at least three reasons for this, which I will explain in the thread below.
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Metsähakkuiden määrässä on laskeva trendi vuodesta 2018 lähtien. Samaan aikaan Suomen metsät ja koko maankäyttösektori ovat muuttuneet hiilinielusta päästölähteeksi. Syynä muutokseen eivät ole lisääntyneet hakkuut, vaan metsien ikääntyminen sekä ilmaston lämpenemisestä johtuvat maaperän päästöt.

In just two years, the GHG emissions from the forest soils in Finland have increased by 33%. At the same time, the carbon sink of living biomass has increased, but despite that, forests are now a source of carbon. Soils are soon becoming the most significant emission source in Finland.