Fraction of Cd in oasis soil and its bioavailability to commonly grown crops in Northwest China

摘要: Heavy metals in the soil–plant system resulting from mining and wastewater irrigation have greatly threatened human health sustainable development Northwest China. This research used pot experiments to study bioavailability of Cd irrigated desert soil oasis regions conducted a risk assessment content vegetables. The results show that associated with exchangeable carbonate metal fractionations is not uniform arid soils cultivated commonly grown These common growth vegetables are: Cole (Brassica campestris L.), Celery (Apium Graveolens L.) carrots (Daucus carota L.). edible part cole was significantly higher than celery almost all treatments. However, can grow normally keep increasing its biomass at rate under highest concentration added experiment. suitable vegetable be planted for consumption contaminated Cd, lower will threaten health, are even According this conclusion, stricter management systems should implemented protect land resources toxicity impacts.