Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Mixed forests – a missed opportunity?

09.01.2013
Forestry and nature conservation can benefit from promoting a diversity of tree species, new study finds.

Modern forestry is largely based on monocultures—in Sweden usually pine or spruce—mainly because it is considered more rational. However a forest contributes more ecosystem services than timber production, such as biological diversity, carbon storage, and berries.


Image: Mixed forrest outside Uppsala, Sweden.
Photo:Nic Kruys/N

A new study from the Swedish University of Agricultural Sciences (SLU) and Future Forests shows that mixed forests, in comparison with monocultures, have positive effects on several different services, including production.

“Many people have suggested that high diversity of tree species has a favorable impact on processes in the ecosystem, but until now this connection has primarily been studied in terms of one process or ecosystem service at a time,” says Lars Gamfeldt from University of Gothenburg, who directed the new study.

The study, performed by an international research group, is based on material from the Swedish National Forest Inventory and the Swedish Forest Soil Inventory.

By examining the role played by the occurrence of diverse tree species for six different ecosystem services (tree growth, carbon storage, berry production, food for wildlife, occurrence of dead wood, and biological diversity), the study demonstrates that all six services were positively related to the number of tree species.

Different trees contribute to different services. For example, the amount of spruce is related to high tree growth and the amount of pine to berry production, while carbon storage was found in plots with more birch. In order to attain more of all services, forestry may thus need to make use of different tree species. Other studies of forests in Central Europe, the Mediterranean region, and Canada support these findings.

The study also investigated the relationship between the various ecosystem services. For example, high tree growth appears to be negatively related to the production of both berries and food for wildlife and to the occurrence of dead wood. On the other hand, food for wildlife was positively associated with both berry production and biological diversity in ground vegetation.

“It’s not so simple that you can always get more of everything. Sometimes you have to consider trade-offs between different ecosystem services,” says Jon Moen from Umeå University.

The new study, which is published in the scientific journal Nature Communications, runs partly counter to conventional thinking in forestry in Sweden. According to 2011 data from the Swedish National Forest Inventory, only about 7.5 percent of the productive forest land has mixed forests.

“Our findings show that both forestry and nature conservation stand to gain by promoting a greater variety of tree types, thereby providing more diverse ecosystem services,” says Jan Bengtsson, from the Swedish University of Agricultural Sciences.

Contacts:
Jan Bengtsson, SLU, mobile: +46 (0)70-2335118, jan.bengtsson@slu.se
Jon Moen, Umeå University, mobile: +46 (0)70-2271513, jon.moen@emg.umu.se
Lars Gamfeldt, University of Gothenburg, mobile: +46 (0)70-3393921, lars.gamfeldt@gu.se

The Future Forests Research Programme is a collaboration between the Swedish University of Agricultural Sciences (SLU), Umeå University, and Skogforsk and is funded by Mistra, SLU, Umeå University, Skogforsk, and the Swedish forestry industry.

Full bibliographic information"Higher levels of multiple ecosystem services are found in forests with more tree species"

Lars Gamfeldt, Tord Snäll, Robert Bagchi, Micael Jonsson, Lena Gustafsson, Petter Kjellander, María C. Ruiz-Jaen, Mats Fröberg, Johan Stendahl, Christopher D. Philipson, Grzegorz Mikusiński, Erik Andersson, Bertil Westerlund, Henrik Andrén, Fredrik Moberg, Jon Moen & Jan Bengtsson

Nature Communications 4, Article number: 1340, doi:10.1038/ncomms2328

Annika Mossing | idw
Further information:
http://www.gu.se
http://www.nature.com/ncomms/journal/v4/n1/full/ncomms2328.html

More articles from Agricultural and Forestry Science:

nachricht New technique reveals details of forest fire recovery
17.05.2018 | DOE/Brookhaven National Laboratory

nachricht Mixed forests: ecologically and economically superior
09.05.2018 | Technische Universität München

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

Im Focus: Dozens of binaries from Milky Way's globular clusters could be detectable by LISA

Next-generation gravitational wave detector in space will complement LIGO on Earth

The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...

Im Focus: Entangled atoms shine in unison

A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.

The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

12.04.2018 | Event News

 
Latest News

PR of MCC: Carbon removal from atmosphere unavoidable for 1.5 degree target

22.05.2018 | Earth Sciences

Achema 2018: New camera system monitors distillation and helps save energy

22.05.2018 | Trade Fair News

LZH showcases laser material processing of tomorrow at the LASYS 2018

22.05.2018 | Trade Fair News

VideoLinks
Science & Research
Overview of more VideoLinks >>>