| zinc and cadmium accumulation and tolerance in populations of sedum alfredii. | to investigate the variation of zn and cd accumulation and tolerance of sedum alfredii (a newly reported zn/cd hyperaccumulator), field surveys and hydroponic experiments were conducted among three populations of this species: two originating from old pb/zn mines in zhejiang (zj) and hunan (hn) provinces and one from a "clean" site in guangdong (gd) province, china. under field conditions, up to 12,524 and 12,253 mg kg(-1) zn, and 1400 and 97 mg kg(-1) cd in shoots of zj and hn plants were recor ... | 2007 | 16828210 |