Liisa Maanavilja

Geological Survey of Finland | GTK · Peatland Use and Resource Economics

Euroopan unionin ennallistamisasetus ((EU) 2024/1991) hyväksyttiin kesäkuussa 2024. Asetuksen on ennakoitu lisäävän ojitettujen turvemaiden ennallistamista Suomessa. Turvemaiden ennallistaminen tarkoittaa pääasiassa vedenpinnan tason nostoa ja suon toiminnallisuuden palauttamista kohti luonnontilaa. Kasvavat ennallistamistavoitteet vaativat resurss...

Peatland restoration is seen as a key nature‐based solution to tackle climate change and biodiversity loss. In Europe, nearly 50% of peatlands have been drained during the last decades, which have shifted their soils to carbon dioxide (CO 2 ) sources. Soils of forestry‐drained peatlands are known to vary from CO 2 sources to small sinks depending o...

The national scale nutrient load modelling system VEMALA-ICECREAM was used to simulate agricultural total nitrogen(TN) loading and its trends for all Finnish watersheds for the period from 1990–2019. Across Finland, agricultural TN loading (ATNL) has decreased from 17.4 kg ha-1 a-1 to 14.4 kg ha-1 a-1 (moving 10-year averages) since the 1990s. The...

After drainage for forestry and agriculture, peat extraction is one of the most important causes of peatland degradation. When peat extraction is ceased, multiple after-use options exist, including abandonment, restoration, and replacement (e.g., forestry and agricultural use). However, there is a lack of a global synthesis of after-use research. T...

This report presents scenarios “with existing measures” (WEM) and “with additional measures” (WAM) concerning the agriculture and LULUCF (Land use, land-use change and forestry) sectors in Finland. The report is part of the project Carbon neutral Finland 2035 – impact assessments of climate and energy policies and measures (HIISI), funded by the Pr...

Tämän selvityksen tarkoituksena on tuottaa kirjallisuuskatsaus ja siihen pohjautuvia johtopäätöksiä soiden ennallistamisen ilmasto-, vesistö- ja suoluontovaikutuksista. Selvitys pyrkii erityisesti kasaamaan yhteen uusimpia tutkimustuloksia ja aineistoja ennallistamisen vaikutuksiin liittyen ja toisaalta muodostamaan kokonaiskuvan laaja-alaisempaa s...

This climate roadmap was made by Natural Resources Institute Finland (Luke) for the Central union of agricultural producers and forest owners (MTK; www.mtk.fi) and the Central union Swedish speaking agricultural producers in Finland (SLC; www.slc.fi). Finnish agriculture produced a total of about 16 Mt CO2 eq. greenhouse gas emissions (GHG emission...

Forestry-drained peatlands in the boreal region are currently undergoing restoration in order to bring these ecosystems closer to their natural (undrained) state. Drainage affects the methane (CH4) dynamics of a peatland, often changing sites from CH4 sources to sinks. Successful restoration of a peatland would include restoration of not only the s...

Peatland rewetting aims to restore biomass accumulation from peat‐forming plants for climate change mitigation, biotope conservation and water purification purposes. Boreal spruce swamp forests in Europe have suffered heavily from drainage for forestry and are now a focus of restoration efforts. We measured Sphagnum height and biomass increment by...

To be presented, with the permission of the Faculty of Agriculture and Forestry of the University of Helsinki, for public criticism in lecture room B2, B-building (Viikki Campus, Latokartanonkaari 7, Helsinki) on May 8 th 2015, at 12 o'clock noon.

In restored peatlands, recovery of carbon assimilation by peat-forming plants is a prerequisite for the recovery of ecosystem functioning. Restoration by rewetting may affect moss photosynthesis and respiration directly and/or through species successional turnover. To quantify the importance of the direct effects and the effects mediated by species...

Boreal spruce swamp forests, in their natural state, harbor a large diversity of plant species. However, these swamp forests have been heavily exploited for forestry; in southern Finland for example, 60% to 80% of the original spruce swamp forests have been drained since the 1950s. In recent years, however, restoration of drained spruce swamps has...

We compared the CO2 exchange and its controls in the plant communities of a strongly patterned aapa mire, the Kaamanen fen in northern Finland. Based on a systematic vegetation inventory and an ordination analysis, four plant community types were chosen for the study: Ericales–Pleurozium string tops, Betula–Sphagnum string margins, Trichophorum tus...