Remediation of Cu-Ni contaminated forest soil using organic mulch and native woody plants
Our main aim was to determine how the application of a mulch cover onto heavy-metal polluted forest soil affects long-term survival and growth of planted dwarf shrubs and tree seedlings, and natural revegetation. Native woody plants (Pinus sylvestris, Betula pubescens, Empetrum nigrum, Arctostaphylos uva-ursi) were planted in mulch pockets on mulch- covered and uncovered plots in a highly polluted Scots pine stand in Finland. Despite initial mortality, establishment was successful during the following ten years. Only 3.5％ of Empetrum cuttings died on the mulch-covered plots, and 48％ on the uncovered plots. Over half of the Arctostaphylos cuttings died in both treatments, but the survived plants have spread over a wide area. The mortality rate of Pinus was low, <12％ in both treatments. The mortality of Betula on the mulch-covered plots (48％) was higher than on the uncovered plots (17％). Natural recolonization of pioneer species (e. g. Epilobium angustifolium, Taraxacum sp. and grasses) and tree seedlings (Pinus sylvestris, Betula sp. and Salix sp.) were strongly enhanced on the mulched plots, whereas there was no natural vegetation on the untreated plots.
downy birch dwarf shrubs heavy-metal pollution Scots pine revegetation
Nieminen T. M. Derome, J. Kuekkilae, O. Salemaa, M. Uhlig, C. Ukonmaanaho, L. Helmisaari, H. S
Finnish Forest Research Institute, P. O. Box 18, FI-01301 Vantaa, Finland Finnish Forest Research Institute, P. O. Box 16, FI-96301 Rovaniemi, Finland Holt Research Centre, Norwegian Crop Research Institute, N-9292 Troms, Norway
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
215-216
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）