北京西山采石场不同自然恢复期主要植物叶绿素荧光特征

Chlorophyll Fluorescence Characers of Popular Species in Different Nature Restoration Stage of Beijing Western Hill Stone Pit

本次调查中共记录到35种植物,其中矿区28种植物,非矿区27种植物。矿区和非矿区共有种有20种。测定同时出现在矿区及非矿区的8种植物的荧光动力学曲线,发现白莲蒿(A.sacrorum)、臭椿(Ailanthus altissima)、杠柳(Periplo-ca sepium)、黄栌(Cotinus coggygria)及荆条(Vitex negundo Var.Canna-bifolia)在矿区和非矿区生长状况差异不显著。胡枝子(Lespedeza bicolo)、酸枣(Ziziphus jujuba var.spinosa)及榆树(Ulmus pumila)在矿区生长良好,这说明矿区恶劣的土质条件虽然影响着一些植物的生长,但是良好的光照条件却为这些植物的生长提供更多的机会。

Thirty-five species were recorded in the investigation,including 28 species in mining sites,and 27 species in nature sites.Twenty species were found both in mining and nature sites.Checking the fluorescence dynamic cure of the 8 species both found in mining sites and nature sites,it showed that five species including A.sacrorum,Ailanthus altissima,Periploca sepium,Cotinus coggygria and Vitex negundo Var.Canna-bifolia had better fitness for all kinds of environment.Their growth situation in mining sites and nature sites had no significant differences.Lespedeza bicolor,Ziziphus jujuba var.spinosa and Ulmus pumila had better growth situation in mining sites than in nature sites.The reason is that better light condition may give more chances for those species＇ growth,although the poor soil conditions in mining sites affects the growth of them.