| 000 | 02308nab|a22004577a|4500 | ||
|---|---|---|---|
| 999 |
_c62814 _d62806 |
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| 001 | 62814 | ||
| 003 | MX-TxCIM | ||
| 005 | 20211006074511.0 | ||
| 008 | 200325s2009||||xxu|||p|op||||00||0|eng|d | ||
| 022 | _a1095-9203 | ||
| 024 | 8 | _ahttps://doi.org/10.1126/science.1170261 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 100 | 1 |
_aVitousek, P.M. _916778 |
|
| 245 | 1 | 0 | _aNutrient imbalances in agricultural development |
| 260 |
_aWashington, DC (USA) : _bAAAS, _c2009. |
||
| 500 | _aPeer review | ||
| 520 | _aNutrient cycles link agricultural systems to their societies and surroundings; inputs of nitrogen and phosphorus in particular are essential for high crop yields, but downstream and downwind losses of these same nutrients diminish environmental quality and human well-being. Agricultural nutrient balances differ substantially with economic development, from inputs that are inadequate to maintain soil fertility in parts of many developing countries, particularly those of sub-Saharan Africa, to excessive and environmentally damaging surpluses in many developed and rapidly growing economies. National and/or regional policies contribute to patterns of nutrient use and their environmental consequences in all of these situations (1). Solutions to the nutrient challenges that face global agriculture can be informed by analyses of trajectories of change within, as well as across, agricultural systems. | ||
| 546 | _aText in English | ||
| 650 | 7 |
_2AGROVOC _916779 _aNutrient cycles |
|
| 650 | 7 |
_aAgricultural development _gAGROVOC _2 _91002 |
|
| 650 | 7 |
_2AGROVOC _91109 _aFarming systems |
|
| 700 | 1 |
_97060 _aNaylor, R. |
|
| 700 | 1 |
_916780 _aCrews, T. |
|
| 700 | 1 |
_916781 _aDavid, M.B. |
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| 700 | 1 |
_916782 _aDrinkwater, L.E. |
|
| 700 | 1 |
_916783 _aHolland, E. |
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| 700 | 1 |
_916784 _aJohnes, P.J. |
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| 700 | 1 |
_916785 _aKatzenberger, J. |
|
| 700 | 1 |
_916786 _aMartinelli, L.A. |
|
| 700 | 1 |
_97054 _aMatson, P.A. |
|
| 700 | 1 |
_96862 _aNziguheba, G. |
|
| 700 | 1 |
_916787 _aOjima, D. |
|
| 700 | 1 |
_92456 _aPalm, C.A. |
|
| 700 | 1 |
_97491 _aRobertson, G. P. |
|
| 700 | 1 |
_92457 _aSanchez, P.A. |
|
| 700 | 1 |
_916788 _aTownsend, A.R. |
|
| 700 | 1 |
_916789 _aZhang, F.S. |
|
| 773 | 0 |
_tScience _gv. 324, no. 5934, p. 1519-1520 _dWashington, DC (USA) : AAAS, 2009. _x1095-920 _wu444126 |
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| 942 |
_cJA _n0 _2ddc |
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