[Objective]The research aimed to discuss the tolerance of Salix matsudana to single or compound heavy metals and provide theoretical basis for renovating polluted soil by heavy metals with woody plants.[Method]Using r...[Objective]The research aimed to discuss the tolerance of Salix matsudana to single or compound heavy metals and provide theoretical basis for renovating polluted soil by heavy metals with woody plants.[Method]Using root elongation method,the effects of heavy metal Cu^2＋,Pb^2＋,Zn^2＋ and their mixed solution on the adventitious roots growth of S.matsudana cuttings were studied.[Result]The adventitious roots growth of S.matsudana cuttings was obviously affected by different concentrations of heavy metals solution.Adventitious roots of S.matsudana cuttings could not grow while the concentration of Cu^2＋ was higher than 15 mg/L,the mixture solution concentration was higher than 20 mg/L and Zn^2＋ concentration was higher than 30 mg/L.When the solution concentration reached 40 mg/L,adventitious roots of S.matsudana cuttings could grow only in Pb^2＋ treatment group.With the increasing of the solution concentration,the number of adventitious roots of S.matsudana cuttings gradually decreased.In 5 mg/L Zn^2＋ treatment group,the number of adventitious roots of S.matsudana cuttings was the most,the longest root length and average root length were the longest and the rooting rate was the highest.[Conclusion]The tolerance of S.matsudana to Pb^2＋ was strongest and its tolerance to Cu^2＋ was the weakest.The tolerance order of S.matsudana to three kinds of heavy metals and their mixed solution was as following：Pb^2＋〉Zn^2＋〉Cu^2＋＋Pb^2＋＋Zn^2＋〉Cu^2＋.展开更多
Two new acyclic diterpene-g-lactones named hanliuine III (1) and hanliuine IV (2) were isolated from leaves of Salix matsudana (Chinese name 揾anliu?. Their structures were deduced from spectral data.
The microbial population in rotten living body of Salix matsudana caused by Trametes suaveolens (L.) was researched. 11 bacteria species (1 species of Bacillus, 2 species of Clostridium and 8 species of non-brood-cell...The microbial population in rotten living body of Salix matsudana caused by Trametes suaveolens (L.) was researched. 11 bacteria species (1 species of Bacillus, 2 species of Clostridium and 8 species of non-brood-cell bacteria), 1 species of Actinomyces that belongs to Lavendulac, 8 species of fungi and 6 species of Trichoderma were isolated from rotten trunk. The hyphae of Trametes suaveolens mainly existed between rotten sections and discoioration sections. In over-rotten section and healthy section the fungi (Trametes suaveolens) were not isolated. The microbes that lived in the discoloration section were the most in kinds and number and they were the pioneer microbes of wood rotting. Only after they dwelled in wood and eIiminated its rot-resistance,could wood-rotting fungi invade wood and caused wood-rotting.展开更多
以呼和浩特市赛罕区典型乔木林为研究对象,分别在小钻杨(Populus×xiaozhuanica)和旱柳(Salix matsudana)纯林内设置样地,调查小钻杨和旱柳的生长状况、不同器官的生物量,及林下草本植被的生物量,并测定不同器官的碳含量,以期为研...以呼和浩特市赛罕区典型乔木林为研究对象,分别在小钻杨(Populus×xiaozhuanica)和旱柳(Salix matsudana)纯林内设置样地,调查小钻杨和旱柳的生长状况、不同器官的生物量,及林下草本植被的生物量,并测定不同器官的碳含量,以期为研究区典型乔木林碳储量计算和评价提供参考。结果表明,小钻杨和旱柳的不同器官生物量变化趋势相同,均表现为干>根>枝>叶,小钻杨单株平均生物量为(29.66±2.14)kg,旱柳单株平均生物量为(16.68±1.36)kg。小钻杨林下草本层平均生物量为(14.45±1.58)g.m^(-2),旱柳林下草本层平均生物量为(15.89±2.36)g.m^(-2)。小钻杨各器官碳含量在45%~52%,旱柳各器官碳含量为44%~53%。赛罕区2011年营造的23.5 hm^(2)乔木林可产生的温室气体减排量约为999.99 t CO_(2)当量,其中小钻杨林为602.01 t CO_(2)当量,旱柳林为397.98 t CO_(2)当量。展开更多
基金Supported by Natural Science Foundation of Anhui University(KJ2007B120)Doctor Foundation Projects of Anhui Agricultural University (WD2006-12)~~
文摘[Objective]The research aimed to discuss the tolerance of Salix matsudana to single or compound heavy metals and provide theoretical basis for renovating polluted soil by heavy metals with woody plants.[Method]Using root elongation method,the effects of heavy metal Cu^2＋,Pb^2＋,Zn^2＋ and their mixed solution on the adventitious roots growth of S.matsudana cuttings were studied.[Result]The adventitious roots growth of S.matsudana cuttings was obviously affected by different concentrations of heavy metals solution.Adventitious roots of S.matsudana cuttings could not grow while the concentration of Cu^2＋ was higher than 15 mg/L,the mixture solution concentration was higher than 20 mg/L and Zn^2＋ concentration was higher than 30 mg/L.When the solution concentration reached 40 mg/L,adventitious roots of S.matsudana cuttings could grow only in Pb^2＋ treatment group.With the increasing of the solution concentration,the number of adventitious roots of S.matsudana cuttings gradually decreased.In 5 mg/L Zn^2＋ treatment group,the number of adventitious roots of S.matsudana cuttings was the most,the longest root length and average root length were the longest and the rooting rate was the highest.[Conclusion]The tolerance of S.matsudana to Pb^2＋ was strongest and its tolerance to Cu^2＋ was the weakest.The tolerance order of S.matsudana to three kinds of heavy metals and their mixed solution was as following：Pb^2＋〉Zn^2＋〉Cu^2＋＋Pb^2＋＋Zn^2＋〉Cu^2＋.
文摘Two new acyclic diterpene-g-lactones named hanliuine III (1) and hanliuine IV (2) were isolated from leaves of Salix matsudana (Chinese name 揾anliu?. Their structures were deduced from spectral data.
文摘The microbial population in rotten living body of Salix matsudana caused by Trametes suaveolens (L.) was researched. 11 bacteria species (1 species of Bacillus, 2 species of Clostridium and 8 species of non-brood-cell bacteria), 1 species of Actinomyces that belongs to Lavendulac, 8 species of fungi and 6 species of Trichoderma were isolated from rotten trunk. The hyphae of Trametes suaveolens mainly existed between rotten sections and discoioration sections. In over-rotten section and healthy section the fungi (Trametes suaveolens) were not isolated. The microbes that lived in the discoloration section were the most in kinds and number and they were the pioneer microbes of wood rotting. Only after they dwelled in wood and eIiminated its rot-resistance,could wood-rotting fungi invade wood and caused wood-rotting.
文摘以呼和浩特市赛罕区典型乔木林为研究对象,分别在小钻杨(Populus×xiaozhuanica)和旱柳(Salix matsudana)纯林内设置样地,调查小钻杨和旱柳的生长状况、不同器官的生物量,及林下草本植被的生物量,并测定不同器官的碳含量,以期为研究区典型乔木林碳储量计算和评价提供参考。结果表明,小钻杨和旱柳的不同器官生物量变化趋势相同,均表现为干>根>枝>叶,小钻杨单株平均生物量为(29.66±2.14)kg,旱柳单株平均生物量为(16.68±1.36)kg。小钻杨林下草本层平均生物量为(14.45±1.58)g.m^(-2),旱柳林下草本层平均生物量为(15.89±2.36)g.m^(-2)。小钻杨各器官碳含量在45%~52%,旱柳各器官碳含量为44%~53%。赛罕区2011年营造的23.5 hm^(2)乔木林可产生的温室气体减排量约为999.99 t CO_(2)当量,其中小钻杨林为602.01 t CO_(2)当量,旱柳林为397.98 t CO_(2)当量。
