Dynamics of soil carbon, nitrogen, and phosphorus in calcareous soils after land-use abandonment – A chronosequence study
- 1.6k Downloads
The objective of this study was to investigate changes in soil total organic C (TOC), total nitrogen (TN), phosphorus (P) fractions, and microbial community structure during secondary succession after abandonment of vineyards on calcareous soils.
Two chronosequences covering 200 years and differing in aspect and slope were established in Hungary, and the upper 10 cm of the mineral soils were studied.
We found strong increases in TOC concentrations after land-use abandonment, especially at the south-exposed sites. The TOC/TN ratio increased by a factor of 1.3 in the south-west exposed chronosequence and by a factor of 1.6 in south exposed chronosequence. The concentration of labile P (NaHCO3-extractable P) diminished during the first 50 years after land-use abandonment, leading to low P availability at the later stages of the succession. The total organic P (TOP) concentration increased during the first 40 years after abandonment. At the later stages of succession, TOP concentrations decreased again, while the ratio of TOC/TOP increased continuously over 200 years. The ratio of arbuscular-mycorrhizal-fungi-to-bacteria (AMF/bacteria) increased strongly during the first decade after abandonment of the vineyards.
Our study indicates that impacts of former cultivation on secondary ecosystems persisted for more than a century, and that especially P concentrations showed long lasting legacy effects.
KeywordsLand-use abandonment Chronosequence Phosphorus fractions Organic phosphorus Stoichiometry Microbial community composition
Research was allowed by the Northern-Hungary Inspectorate for Environmental Protection Nature Conservation and Water Management, Miskolc, in accordance with decree No. 16496-3/2011. We would like to thank all students that helped with the field work. We are grateful to Carolin Apostel and Michaela Dippold for their help with the PLFA analysis, and to Carlos A. Sierra for his help with the software program R.
- Allison VJ, Yermakov Z, Miller RM, Jastrow JD, Matamala R (2007) Using landscape and depth gradients to decouple the impact of correlated environmental variables on soil microbial community composition. Soil Biol Biochem 39:505–516Google Scholar
- R Core Team (2013) R: A language and environment for statistical computing R Foundation for Statistical Computing, Vienna, Austria URL http://www.R-projectorg/
- De Schrijver A, Vesterdal L, Hansen K, De Frenne P, Augusto L, Achat DL, Verheyen K (2012) Four decades of post-agricultural forest development have caused major redistributions of soil phosphorus fractions. Oecologia 169:221–234Google Scholar
- Hinsinger P (2001) Bioavailability of soil inorganic P in the rhizosphere as affected by root-induced chemical changes: a review. Plant Soil 237:173–195Google Scholar
- Matar A, Torrent J, Ryan J (1992) Soil and fertilizer phosphorus and crop responses in the dryland Mediterranean zone. In: Advances in Soil Science (pp 81–146) Springer, New YorkGoogle Scholar
- Olsen SR, Cole CV, Watanabe FS, Dean LA (1954) Estimation of available phosphorus in soils using NaHCO3. United States Department of Agriculture Circular 939Google Scholar
- Poschlod P, WallisDeVries MF (2002) The historical and socioeconomic perspective of calcareous grasslands—lessons from the distant and recent past. Biol Conserv 104:361–376Google Scholar
- Post WM, Kwon KC (2000) Soil carbon sequestration and land‐use change: processes and potential. Glob Chang Biol :317–327Google Scholar