Solid Earth, 6, 609–620, 2015 www.solid-earth.net/6/609/2015/ doi:10.5194/se-6-609-2015 © Author(s) 2015. CC Attribution 3.0 License. Remediation of degraded arable steppe soils in Moldova using vetch as green manure M. Wiesmeier1, M. Lungu2, R. Hübner3, and V. Cerbari2 1Lehrstuhl für Bodenkunde, Wissenschaftszentrum Weihenstephan für Ernährung, Landnutzung und Umwelt, Technische Universität München, 85350 Freising-Weihenstephan, Germany 2Institute for Pedology, Agrochemistry and Soil Protection “Nicolae Dimo”, Chisinau, Moldova 3Chair for Strategic Landscape Planning and Management, Center of Life and Food Sciences Weihenstephan, Technische Universität München, 85350 Freising-Weihenstephan, Germany Correspondence to: M. Wiesmeier (
[email protected]) Received: 12 January 2015 – Published in Solid Earth Discuss.: 30 January 2015 Revised: 8 April 2015 – Accepted: 24 April 2015 – Published: 29 May 2015 Abstract. In the Republic of Moldova, non-sustainable 1 Introduction arable farming led to severe degradation and erosion of fer- tile steppe soils (Chernozems). As a result, the Chernozems lost about 40 % of their initial amounts of soil organic car- In the Republic of Moldova, located at the western edge bon (SOC). The aim of this study was to remediate degraded of the Eurasian steppe belt, about 80 % of the land area arable soils and promote carbon sequestration by implemen- is covered by Chernozems, which are thick, dark steppe tation of cover cropping and green manuring in Moldova. soils. These soils are characterized by an exceptionally high Thereby, the suitability of the legume hairy vetch (Vicia amount of soil organic matter (SOM) and belong to the most sativa) as cover crop under the dry continental climate of fertile soils of the world.