Plant Growth and Nutrient Composition of Shrub and Arbor Willows Grown in Cu-Contaminated Flooded Soil

Flooding can adversely worsen metal-contaminated soil and influence phytoremediation efficiency; thus, it is crucial to explore the eco-physiological responses of plants combined stress metals flooding. Here, plant growth, photosynthesis, nutrient composition in arbor willow (Salix jiangsuensis ‘J172’) shrub integra ‘Yizhibi’) were studied using a pot experiment with Cu-contaminated (239.5 mg∙kg−1) under flooded versus non-flooded conditions. S. showed larger bioconcentration factor (BCF) than both treatments. markedly decreased BCFs while obviously increasing translocation two willows (p < 0.05). enhanced leaf C:P N:P ratios significantly root ratios, compared condition. The exhibited better tolerance flooding, little alteration biomass photosynthetic rate, greater potential Cu accumulation capacity, even though its total was lower that willow. Our study also helps further understanding balance stoichiometry response flooding contamination, promoting management soils.