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Trade-offs between plant species richness and carbon storage in the context of afforestation – Examples from afforestation scenarios in the Mulde Basin, Germany

In English

Författare

  • Sven Lautenbach
  • Anne Jungandreas
  • Jan Blanke
  • Veiko Lehsten
  • Susanne Mühlner
  • Ingolf Kühn
  • Martin Volk

Summary, in English

The German Federal State of Saxony aims to increase forest cover, supported by the implementation of afforestation programs. To analyze consequences of an increase in forest cover, this study investigates possible trade-offs between carbon storage and plant biodiversity caused by afforestation. Six afforestation scenarios with total forest cover ranging from 27.7% to 46% were generated in the Mulde river basin in Saxony with regard to different forest types. Carbon storage was calculated by the process-based Dynamic Vegetation Model LPJ-GUESS while random forest models were used to predict changes in plant species richness. We used eight different plant groups as responses: total number of plant species, endangered species, as well as species grouped by native status (three groups) and pollination traits (three groups). Afforestation led to an increase in carbon storage that was slightly stronger in coniferous forests as compared to deciduous forests. The relationship between plant species richness and afforestation was context dependent. Species richness showed a non-linear relationship with forest cover share. The relationship was influenced by shares of land use types, climatic conditions and land use configuration expressed by the number of land use patches. The effect of forest type on plant species richness was marginal. On average the relationship between carbon storage and plant species richness was synergistic for most plant groups. However, the relationship between change in species richness and change in carbon storage varied across space. This changing relationship was used to identify priority areas for afforestation. The different plant groups responded differently to an increase in forest cover. The change in species richness for Red List species was relatively distinct from the other species groups. Neophytes and archeophytes (i.e. alien plant species introduced after and before the discovery of the Americas) showed a similar response to the afforestation scenarios. While afforestation had overall positive effects both on plant species richness and carbon storage, a number of locations were identified for which afforestation would lead to a decrease in plant species richness. Spatial planning should therefore avoid afforestation at these locations.

Publiceringsår

2017-02-01

Språk

Engelska

Sidor

139-155

Publikation/Tidskrift/Serie

Ecological Indicators

Volym

73

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Ecology
  • Environmental Sciences related to Agriculture and Land-use

Nyckelord

  • Biodiversity
  • Carbon storage
  • Ecosystem services
  • Land use change simulation
  • LPJ-GUESS
  • Plant species richness
  • Random forest
  • Species richness modeling
  • Trade-offs

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1470-160X