Spohn, M; Novàk, TJ,; Incze, J; Giani, L: Dynamics of soil carbon, nitrogen, and phosphorus in calcareous soils after land-use abandonment - A chronosequence study, Plant Soil, 401, 185-196 (2016), doi:10.1007/s11104-015-2513-6
Abstract:
Aims 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.

Methods 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.

Results 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.

Conclusions 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.

Aktuelle Termine


Antrittsvorlesung:
Mi. 19.12.2018
Antrittsvorlesung von Juniorprofessorin Dr. Johanna Pausch (Agrarökologie)
BayCEER-Kolloquium:
Do. 13.12.2018
High resolution mass spectrometry in environmental sciences and beyond.
Do. 10.01.2019
From research to agro-environmental policy: success stories for biodiversity conservation
Do. 17.01.2019
Hot spots of C turnover in soil
Geographisches Kolloquium:
Mi. 12.12.2018
Die Mittelterrassen des Rheins und ihre Deckschichten – Genese, Stratigraphie und Chronologie
Wetter Versuchsflächen
Luftdruck (356m): 966.7 hPa
Lufttemperatur: 3.7 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 17m): 19.3 km/h
Wind (Max.): 42.5 km/h
Windrichtung: NW

...mehr
Globalstrahlung: 2 W/m²
Lufttemperatur: 0.7 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 32m): 15.5 km/h
Wind (Max.): 34.6 km/h

...mehr
Diese Webseite verwendet Cookies. weitere Informationen