关键词: 物种多样性, 物种多样性指数, 物种丰富度, 海拔带, 祁连山区

Abstract: A hydroponic experiment was conducted to study the growth responses and cadmium (Cd) accumulation characteristics of  Lonicera japonica  under stress of different concentration Cd. Cd had less impact on the growth of  L. japonica , and even, low concentration (5 and 10 mg·L ^-1) Cd could increase the stem height and leaf chlorophyll content. When the Cd concentration was up to 50 mg·L ^-1, the stem height and root length had somewhat decrease but less difference with the control. The index of tolerance (IT) was above 0.8, indicating that L. japonica had stronger tolerance to Cd. When the Cd concentration was 25 mg·L ^-1, the shoot Cd content reached 28612 μg·g ^-1 , and the bioaccumulation factor (BF) was above 1, suggesting that  L. japonica  possessed the characteristics of Cd-hyperaccumulator and had great potentiality in the phytoremediation of Cd-contaminated soil.

Key words: Species diversity, Biodiversity index, Species richness, Altitude level, Qilian Mountains