Multispecies grasslands produce more yield from lower nitrogen inputs across a climatic gradient

• 成果类型: Article
• 署名作者: O'Malley, James; Finn, John A.; Malisch, Carsten S.; Suter, Matthias; Meyer, Sebastian T.; Peratoner, Giovanni; Thivierge, Marie-Noelle; Abalos, Diego; Adler, Paul R.; Bezemer, T. Martijn; Black, Alistair D.; Ergon, Ashild; Golinska, Barbara; Grange, Guylain; Hakl, Josef; Hoekstra, Nyncke J.; Huguenin-Elie, Olivier; Jing, Jingying; Jungers, Jacob M.; Lajeunesse, Julie; Loges, Ralf; Louarn, Gaetan; Luscher, Andreas; Moloney, Thomas; Reynolds, Christopher K.; Sturite, Ievina; Khan, Ali Sultan; Vishwakarma, Rishabh; Zhang, Yingjun; Zhu, Feng; Brophy, Caroline
• 署名单位: Trinity College Dublin; Teagasc; Aarhus University; Swiss Federal Research Station Agroscope; Technical University of Munich; Laimburg Research Center; Agriculture & Agri Food Canada; United States Department of Agriculture (USDA); Leiden University; Leiden University - Excl LUMC; Royal Netherlands Academy of Arts & Sciences; Netherlands Institute of Ecology (NIOO-KNAW); Lincoln University - New Zealand; Norwegian University of Life Sciences; Poznan University of Life Sciences; Czech University of Life Sciences Prague; China Agricultural University; University of Minnesota System; University of Minnesota Twin Cities; Agriculture & Agri Food Canada; University of Kiel; INRAE; University of Reading; Norwegian Institute of Bioeconomy Research; Chinese Academy of Sciences; Center for Agricultural Resources Research, Institute of Genetic & Developmental Biology, CAS; Institute of Genetics & Developmental Biology, CAS
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8075; 1095-9203
• DOI: 10.1126/science.ady0764
• 发表日期: 2026-01-08
• 页码: 179-183
• 关键词: PLANT-SPECIES DIVERSITY; PRODUCTIVITY; mixtures; FORAGE; time

摘要

High-yielding forage grasslands frequently contain low species diversity and receive high inputs of nitrogen fertilizer. To investigate multispecies mixtures as an alternative strategy, the 26-site international LegacyNet experiment systematically varied the diversity of sown grasslands using up to six high-yielding forage species (grasses, legumes, and herbs) managed under moderate nitrogen inputs. Multispecies mixtures outyielded two widely used grassland practices: a grass monoculture with higher nitrogen fertilizer and a two-species grass-legume community. High yields in multispecies mixtures were driven by strong positive grass-legume and legume-herb interactions. In warmer sites, the yield advantage of legume-containing multispecies mixtures over grass monocultures with higher nitrogen fertilizer inputs increased. Improved design of grassland mixtures can inform more environmentally sustainable forage production and may enhance adaptation of productive grasslands to a warming climate.