铜冶炼尾矿废弃地土壤种子库特征研究  

Character of the Soil Seed Bank in Copper Tailing

作　　者：张熙 龙荣 韩郸 王雪梅 胡金朝 ZHANG Xi;LONG Rong;HAN Dan;WANG Xue-mei;HU Jin-zhao(Panxi Geological Team,Bureau of Geology and Mineral Resources Exploration and Development of Sichuan Province,Xichang 615000,China;不详)

机构地区：[1]四川省地质矿产勘察开发局攀西地质队,四川西昌615000 [2]西昌学院资源与环境学院,四川西昌615013

出　　处：《环境科学导刊》2021年第3期34-37,共4页Environmental Science Survey

摘　　要：以西昌市康铜冶炼厂尾矿废弃地为例采用种子萌发实验研究了其土壤种子库特征,并与相邻生环境土壤种子库进行对比,以期为凉山地区铜冶炼废弃地恢复提供科学依据。结果表明:矿渣土共萌发3种植物,种子密度为350粒/m^(2)。尾矿废弃地土壤共萌发5种植物,种子密度为375粒/m^(2),其中狗牙根占比最大。相邻生环境土壤共萌发6种植物,种子密度为300粒/m^(2)。尾矿废弃地与相邻生环境土壤种子库相似性为0.400,与矿渣种子库相似性为0.857,与地上植被相似性为0.276,三者之间表现差异较大。尾矿废弃地土壤种子库的多样性指数平均值为1.116,多样性较低。Soil seed bank plays an important role in vegetation restoration of degraded ecosystem.In order to provide scientific basis for the recovery of copper tailing in Liangshan area,a case study was carried out on the soil of a copper tailing in Xichang City.The characteristics of the soil seed bank were studied by the method of seed germination,and compared with the soil seed bank of the adjacent habitat.The results showed that the seed density of the copper mine was 350grain/m^(2),which germinated three kinds of plants.The seed density of tailing was 375grain/m^(2),and the number of Cynodondactylon(L.)pers.was accounted for the largest proportion in this group.The seed density was 300grain/m^(2) in adjacent habitat.The Sorensen's coefficient of species between the tailing seed bank with the adjacent habitat seed bank was 0.400,with the copper mine seed bank was 0.857,and with the above-ground vegetation was 0.276.The species diversity index of the soil seed bank in the tailing was low as 1.116.

关 键 词：土壤种子库 特征研究 相似性指数 铜冶炼尾矿 

分 类 号：X53[环境科学与工程—环境工程]