Making use of quasar spectra from LAMOST, in the spectral data around the Mg ii emission lines, research described in this paper has detected 217 Mg ii narrow absorption lines (NALs) with and in a redshift range of 0.4554 ≤ z _abs ≤ 2.1110. For quasars observed by both LAMOST and SDSS, we find that 135 Mg ii NALs were obviously observed in the LAMOST spectra, 347 Mg ii NALs were were apparent in the SDSS spectra, and 132 Mg ii NALs were clearly present in both the SDSS and LAMOST spectra. The missed Mg ii NALs are likely ascribed to low signal-to-noise ratios of corresponding spectra. Among the Mg ii NALs obviously observed in SDSS or LAMOST spectra, eight Mg ii NALs were significantly changed with in time intervals of Δ MJD/(1 + z _em) = 359 – 2819 d.

从LAMOST利用的类星体光谱，在所述Mg周围的光谱数据II的发射线，研究在本文中所描述已检测217的Mg二窄的吸收线（的NAL）与和在0.4554红移范围≤ Ž _腹肌≤2.1110。对于 LAMOST 和 SDSS 观测到的类星体，我们发现在 LAMOST 光谱中明显观察到135 Mg ii NALs ，在 SDSS 光谱中明显观察到 347 Mg ii NALs，并且在 SDSS 和 LAMOST光谱中明显存在132 Mg ii NALs光谱。错过的 Mg ii NAL 可能归因于相应光谱的低信噪比。在 Mg ii在SDSS或LAMOST光谱中明显观察到NAL，8个Mg ii NAL在Δ MJD/(1 + z _em ) = 359 – 2819 d的时间间隔内发生显着变化。