Provision of contrasted nitrogen-related ecosystem services among grain legumes - Institut Agro Dijon Accéder directement au contenu
Article Dans Une Revue Agronomy for Sustainable Development Année : 2020

Provision of contrasted nitrogen-related ecosystem services among grain legumes

Maé Guinet
Bernard Nicolardot
Anne-Sophie Voisin

Résumé

Legumes deliver unique functions that are complementary to those of other groups of species (cereals and oil-rich crops), providing many ecosystem services related to nitrogen. However, the choice of grain legumes according to their ability to provide these ecosystem services remains difficult due to a lack of references for a variety of species. During two legume – wheat successions established between 2014 and 2017, five nitrogen pools were measured, and considered as proxies of nitrogen functions supporting ecosystem services and dis-services. Nitrogen pools were analyzed together with several of their explanatory shoot and root characteristics (i.e. plant traits and properties). For the first time, a wide range of grain legumes could be characterized by their contrasted functional profiles relative to nitrogen. For each species, synergies and trade-offs between the different nitrogen functions were highlighted and related to the explanatory plant characteristics. Shoot and root characteristics explained 76.1% of the variability of nitrogen functions among legumes species. Chickpea, common bean, and soybean had high capacity to take up soil nitrogen during their growth cycles, reducing the risk of nitrogen losses after their harvest. These species were characterized by a high root lateral expansion rate and their capacity to invest a large proportion of belowground biomass in nodules. Conversely, common vetch, faba bean, lentil, pea and Narbonne vetch, were less able to take up soil nitrogen, with higher risks of nitrogen losses, but these species induced high amounts of nitrogen in the following wheat crop and were characterized by high crop residue nitrogen concentration. Larger amounts of nitrogen fixed and exported in seeds were measured for species characterized by high shoot dry matter, high nitrogen harvest index, high seed nitrogen concentration, and large seeds. Hence, this study should facilitate the selection of legume species according to the expected objectives.
Fichier principal
Vignette du fichier
13593_2020_Article_637.pdf (1.42 Mo) Télécharger le fichier
Origine : Publication financée par une institution

Dates et versions

hal-02974701 , version 1 (30-08-2021)

Identifiants

Citer

Maé Guinet, Bernard Nicolardot, Anne-Sophie Voisin. Provision of contrasted nitrogen-related ecosystem services among grain legumes. Agronomy for Sustainable Development, 2020, 40 (5), pp.33. ⟨10.1007/s13593-020-00637-0⟩. ⟨hal-02974701⟩
144 Consultations
62 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More