Abstract
AbstractSoil degradation limits the potential for the re‐establishment of native plants. Most land restoration practices typically concentrate on the recovery of soil physical properties and plant establishment, while neglecting the recovery of soil microbiota. Mediterranean wild leguminous shrubs are ideal candidates for use in land recovery projects, as they are drought tolerant, improve soil fertility through biological nitrogen fixation and exhibit high stem net photosynthesis that increases their carbon gain. In this study, we used the legumes Cytisus balansae, Cytisus multiflorus, Cytisus striatus and Genista florida in a long‐term trial to recover a degraded soil in southwestern Spain. The main objective of this trial was to investigate to what extent the introduction of shrubby legumes inoculated with their own rhizobial symbionts can improve the properties and associated vegetation of a degraded soil. The results showed that the inoculation of legumes with nitrogen‐fixing bacteria enhanced plant performance in all four legumes. Whereas in the absence of legumes, soil fertility and plant community did not improve significantly, amelioration was observed in plots with non‐inoculated legumes, with maximum values in terms of the number of accompanying species, soil nitrogen content and organic matter recorded in soils with inoculated legumes. Copyright © 2015 John Wiley & Sons, Ltd.
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