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| 1 | UV/Vis Characterization and Fate of Organic Amendment Fractions in a Dune Soil in Dakar, Senegal显示文摘The application of organic amendments on soils poor in organic matter(OM) can improve long-term soil fertility, but may also enhance the mineralization of native soil organic matter. Three organic amendments, compost, sewage sludge and horse manure, used by urban market gardeners in Dakar, Senegal were analyzed for their OM maturity. Their fate was evaluated in a 45-d agronomic trial in a sandy Arenosol with lettuce. In each case, water-extractable organic matter(WEOM) and humic-like substances(HLS)were isolated from raw amendments and amended soils, and characterized using ultraviolet-visible(UV/Vis) spectroscopy. Results highlighted the general more aromatic character of HLS and WEOM fractions extracted from compost compared to the other two amendments. When applied to soils, however, these differences were not clearly observed. The aromaticity and humification degree of the labile fraction(WEOM) increased with depth in the first 30 cm for all amendments. This indicated the high lixiviation rates that fresh OM underwent in the studied sandy soil. Finally, a statistical analysis of the results was able to discriminate between surface and deeper horizons and between amended- and non-amended soil samples. Spectroscopic indices showed indeed strong increase/decrease with depth linked with the mineralization/humification processes that the fresh OM from amendments underwent during the 45 d of the agronomic trial. This study highlights the potential of spectroscopic techniques to study agricultural amendment organic matter fractions and their fate in soils. | Silwan DAOUK Mohammad HASSOUNA Anne GUEYE-GIRARDET Seydou NIANG Hans-Rudolf PFEIFER | 2015 | Pedosphere2015，25，3： | 6 |
| 2 | Predictors of bone mineral density in patients on hemodialysis显示文摘 | Zayour D Daouk M Medawar W | 2004 | Transplant Proc2004，36，5： | 1 |
| 3 | Electronic individual identifica- tion of zebrafish using radio frequency identification (RFID)mierotags 显示文摘 | Cousin X Daouk T P6an S | 2012 | Journal of Experimental Biology2012，215，16： | 1 |
| 4 | The world price of earnings opacity显示文摘 | Bhattacharya U Daouk H Welker M | 2003 | The Accounting Review2003，，78： | 1 |
| 5 | Desiccant cooling air conditioning: a review 显示文摘 | DaouK Wang RZ XiaZZ | 2006 | Renewable and Sustainable Energy Reviews2006，10，2： | 1 |
| 6 | The world price of earnings opacity 显示文摘 | Bhattacharya U Daouk H Welker M | 2003 | The accounting Review2003，78，3： | 1 |
| 7 | Capital Market Govern- ance: How Do Security Laws Affect Market Performance? 显示文摘 | Daouk H M C Lee D Ng | 2006 | Journal of Corporate Finance2006，12，3： | 1 |
| 8 | Using investment portfolio return to combine forecasts: a multi-objective approach显示文摘 | Leung M T Daouk H Chen A-S | 2001 | European Journal of Operational Research2001，134，： | 1 |
| 9 | The world price of earnings opacity 显示文摘 | Bhattacharya U Daouk H Welker M | 2003 | The Accounting Review2003，78，3： | 1 |
| 10 | A practical way to improve contrast-to-noise ratio and quantitation for statistical-based iterative reconstruction in whole-body PETimaging显示文摘 | Fin L Bailly P Daouk J | 2009 | Medical Physics2009，36，7： | 1 |
| 11 | The World Price of Earnings Opacity显示文摘 | Bhattacharya U Daouk H Welker M | | 0，，03： | 1 |
| 12 | Forecasting exchange rates us- ing general regression neural networks 显示文摘 | Leung M T CHEN A DAOUK H | 2000 | Computers and Operations Re- search2000，27，1112： | 1 |
| 13 | Using investment portfolio returns to combine forecasts: A multi-objective approach显示文摘 | Leung M T Daouk H Chen A S | 2001 | European Journal of Operational Research2001，134，1： | 1 |
| 14 | Using investment portfolio return to combine forecasts: Multi-objective approach 显示文摘 | Leung M T Daouk H Chen A S | 2001 | European Journal of Operational Research2001，134，1： | 1 |
| 15 | Predictors of bone mineral density in patients on hemodialysis显示文摘 | Zayour D Daouk M Medawar W | 2004 | Transplant Proc2004，36，5： | 1 |
| 16 | The world price of earnings opacity显示文摘 | Bhattacharya U Daouk H Welker M | 2003 | The Accounting Review2003，78，3： | 1 |
| 17 | The world price of insider trading显示文摘 | Bhattacharya Utpal Hazem Daouk | 2002 | Journal of Finance2002，，： | 1 |
| 18 | Efficacy and safety oflasilactone, a new combination diuretic, in essential hypertension显示文摘 | Birbari A E Daouk M M Mukaddam-Daher S | 1987 | Gen Pharmacol1987，18，6： | 1 |
| 19 | The world price of earnings opacity显示文摘 | Bhattacharya U Daouk H Welker M | 2003 | The Accounting Review2003，78，3： | 1 |
| 20 | Forecasting stock indices:a comparison of classification and level estimation models显示文摘 | Leung M T Daouk H Chen A S | | 0，，2： | 1 |
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