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| 1 | Progresses in restoration of post-mining landscape in Africa显示文摘Mining alters the natural landscape and discharges large volumes of wastes that pose serious pollution hazards to the environment, to human health and to agriculture. As a result, the recent 2 decades have witnessed a global surge in research on post-mining landscape restoration, yielding a suite of techniques including physical, chemical, biological(also known as phytoremediation) and combinations. Despite the long history of mining in Africa, no systematic review has summarized advances in restoration research and practices after mining disturbance. Thus, the aim of this review was to document the state-of-knowledge and identify gaps in restoration of postmining landscape in Africa through literature review. We found that:(1) there has been substantial progress in identifying species suitable for phytoremediation;(2) few studies evaluated the feasibility of organic amendments to promote autochthonous colonization of mine wastelands or growth of planted species; and(3) restoration of limestone quarries in Kenya, sand mining tailings in South Africa,and gold mine wasteland in Ghana are successful cases of large-scale post-mining restoration practices in Africa.However, the pace of post-mining landscape restoration research and practice in Africa is sluggish compared to other parts of the global south. We recommend:(1)mainstreaming the restoration of mine wastelands in national research strategies and increased development planning to make the mining sector ‘‘Green'';(2) inventory of the number, area, and current status of abandoned mine lands;(3) expanding the pool of candidate species for phytostabilization;(4) further evaluating the phytostabilization potential of organic amendments, e.g., biochar;(5)assessing the impacts of mining on regional biodiversity. | Emma Sandell Festin Mulualem Tigabu Mutale N.Chileshe Stephen Syampungani Per Christer Oden | 2019 | Journal of Forestry Research2019，30，2： | 4 |
| 2 | Physico-chemical characteristics and heavy metal concentrations of copper mine wastes in Zambia:implications for pollution risk and restoration显示文摘Soil characterization is a vital activity to develop appropriate and effective restoration protocols for mine wastelands while insights into the total content of heavy metals in the soil is an important step in estimating the hazards that the metals may pose to the vital roles of soil in the ecosystem.This study addressed the following research questions:(1)To what extent do the physico-chemical characteristics vary between mine waste sediments and the nearby forest soil?(2)Are the concentrations of heavy metals high enough to be considered as toxic?and(3)Are heavy metals present in mine waste sediments potential sources of pollution?We hypothesized that the physicochemical characteristics of mine waste sediments are less favorably for plant establishment and growth while the concentrations of heavy metals are very high,thus restricting the success of revegetation of mine waste lands.Mine waste sediments were sampled following a diagonal transect across tailings dams,overburden dump sites and the local forest soil from the top layer(0-20 cm)using a closed auger.Samples were analyzed for arsenic,barium,lead,cadmium,cobalt,copper,chromium,nickel,vanadium,and zinc as well as for soil physico-chemical properties.The mine waste sediments were dominated by silt whilst the forest soil by sand particles,with significantly high bulk density in the former.Both the forest soil and overburden sediments were acidic than the alkaline tailings dam sediment.Total organic carbon and nitrogen contents were significantly low in mine wasteland substrates but the concentration of Ca and Mg were significantly higher in tailings dam substrate than the forest soil.The concentrations of available P,K and Na were similar across sites.The mean concentrations of heavy metals were significantly(p<0.01)higher in mine waste sediments than the forest soil;except for cadmium(p=0.213).The order of contamination by heavy metals on the tailings was Cu>Co>Ba>Ni>As>Zn>Pb>Cr>V>Cd,and that on the overburdens was Cu>Co>Ba>Ni>Zn>Cr>Pb>V>As>Cd.The pollution load index(PLI)was nearly twice higher for the tailings dam(8.97)than the overburden(5.84).The findings show that the copper mine wastes(the tailings dams and overburden waste rock sites)are highly contaminated by heavy metals;which,in turn,might pose serious hazards to human health and agricultural productivity.In addition,poor macro-nutrient availability,substrate compaction and soil acidity(particularly on overburden sites)coupled with toxic level of heavy metals would be the main challenges for successful phytostabilization of copper mine wastelands. | Mutale N.Chileshe Stephen Syampungani Emma Sandell Festin Mulualem Tigabu Abolfazl Daneshvar Per Christer Odén | 2020 | Journal of Forestry Research2020，31，4： | 2 |
| 3 | OFDM Channel Estimation by singular Value Decomposition显示文摘 | Edfors O Sandell M Beek J | 1998 | IEEE Trans on Comm1998，46，7： | 1 |
| 4 | ML estimation of time and frequency offset in OFDM systems显示文摘 | J J van de Beek M Sandell P O Bφrjesson | 1997 | IEEE Trans Signal Processing1997，45，7： | 1 |
| 5 | Liberalism and the limits of justice显示文摘 | MICHAEL J SANDEL | 1982 | Cambridge University1982，5557，： | 1 |
| 6 | The influence of Late Quaternary climate-change ve- locity on species endemism显示文摘 | SANDEL B ARGE L DALSGAARD B | 2011 | Science2011，334，6056： | 1 |
| 7 | Robustness re- suits in linear-quadratic Gaussian based multivariable control desig- ns 显示文摘 | LEHTOMAKI N A SANDELL N R ATHANS M | 1981 | IEEE Transactions on Automatic Control1981，26，1： | 1 |
| 8 | ML estimation of time and frequency offset in OFDM systems显示文摘 | J J van de Beck M Sandell P O Borjessnn | 1997 | IEEE Transaction on Signal Processing1997，45，7： | 1 |
| 9 | ML estimation of time and frequency offset in OFDM systems显示文摘 | Van de Beek J Sandell M Borjesson P O | 1997 | IEEE Trians on Signal Processing1997，45，7： | 1 |
| 10 | ML estimationof time and frequency offset in OFDM systems显示文摘 | Van de Beek J Sandell M Boriesson O P | 1997 | IEEESignal Processing1997，45，7： | 1 |
| 11 | Inflammatory mediators: tracing links between obesity and osteoarthritis显示文摘 | RAI MF SANDELL LJ | 2011 | Crit Rev Eukaryot Gene Expr2011，21，2： | 1 |
| 12 | Motion analysis, carti- lage mechanics, and biology in femoroacetabular impingement: current understanding and areas of future research显示文摘 | Matheney T Sandell L Foucher K | 2013 | J Am Acad Orthop Surg2013，211，： | 1 |
| 13 | ML estimation of time and frequency offset in OFDM systems显示文摘 | BEEK J J V D SANDEL M BORJESSON P O | | 0，，07： | 1 |
| 14 | On channel estimation in OFDM systems 显示文摘 | Van de Beek J J OEdfors Sandell M | 1998 | IEEE Trans Commun1998，46，： | 1 |
| 15 | Dendritic cells in colorectal cancer correlate with other tumor-infiltrating immune cells 显示文摘 | Dadabayev A R Sandel M H Menon A G | 2004 | Cancer Immunol Immunother2004，53，11： | 1 |
| 16 | Priary nucleo tide structure of Predominant and alternate splice forms of equine insulin-like growth factor-1 and their gene expression patterns in tissue显示文摘 | Brower-Toland B D Sandell L J | 1999 | Am J VetRes1999，60，8： | 1 |
| 17 | Detection with distributed sensors显示文摘 | SANDELL N R | 1981 | IEEE Transaction on Aerospace and Electronic Systems1981，17，： | 1 |
| 18 | Dance and movement program improves quality-of-life measures in breast cancer survivors显示文摘 | SANDEL S L JUDGE J O LANDRY N | 2005 | Cancer Nurs2005，28，4： | 1 |
| 19 | Transcription of bone and cartilage genes显示文摘 | Sandell LJ Towler DA | 2002 | Orthop2002，13，5： | 1 |
| 20 | Detection with distributed sensor显示文摘 | Tenney R R Sandell N R | 1981 | IEEETrans AES1981，17，4： | 1 |
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