Date (CATENA)

(1) study the growth and Cd and As uptake and accumulation of hyperaccumulators when intercropped with R. pseudoacacia L.; (2) explore the influence of R. pseudoacacia L. intercropped with hyperaccumulators on the fundamental physicochemical characteristics of soil and soil enzymes activities; (3) evaluate the response of N-fixing microbial community and co-occurrence networks under the intercropping of R. pseudoacacia L. and hyperaccumulator; (4) investigate the relationships between the uptake of Cd and As in hyperaccumulators and the soil N-fixing microbial communities under the intercropping system.