Abstract:Effects of seabuckthorn ( Hippophae rhamnoides L.) on nutrient distribution and nutrient cycling of poplar plantations in dry subhumid area of China were examined over 3 years by introducing seabuckthorn into three poplar stands of different varieties ( Populus ‘Xiaohei’, P. ‘Zaolin06’ and P. euramericane cv. ‘N3016’), and in two different mixing designs (individual or strip mixing patterns). The concentrations of N, P and K were found to be significantly higher in the seabuckthorn leaves th...