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Author: SAID.. BELKACEM
Publisher:
ISBN:
Category :
Languages : fr
Pages : 188
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Book Description
LA RESATURATION DES SOLS FORESTIERS ACIDES ET LEUR DYNAMIQUE SONT ABORDEES PAR L'ETUDE DES EFFETS DES FORMES ET QUANTITES D'AMENDEMENTS APPORTES, EN INTERACTION AVEC LA QUALITE DE L'HUMUS. LE CACO#3, CACO#3+MGO ET CASO#4 SONT APPORTES EN SURFACE AVEC DES DOSES DE 0, 0.56, 2.8 ET 5.6 T/HA EQUIVALENT CAO ET LES PRINCIPAUX RESULTATS SONT: LE SOL: LA VALEUR DU PH DU SOL EST AUGMENTEE DE 4 UNITES PH DANS LES COUCHES DE SURFACE (A#1) ET D'UNE UNITE PH EN MOYENNE EN PROFONDEUR (B) AVEC LES AMENDEMENTS CARBONATES. LA RESATURATION A ETE RAPIDE (MOINS DE 7 MOIS) DANS LES PREMIERS CENTIMETRES DU SOL AVEC UNE MIGRATION EGALEMENT DE PARTICULES DE CARBONATES (>40% DU CA) DE LA LITIERE VERS LA COUCHE A#1#1 (-3 CM). LA SATURATION N'EST PAS MODIFIEE DANS LES COUCHES INFERIEURES DU (B) (16 A 21 CM), SAUF POUR LA FORME SULFATE OU ELLE A AUGMENTE DE 50% PAR RAPPORT AU TEMOIN. LES MECANISMES D'ECHANGES DE L'ALUMINIUM PAR LE CALCIUM EXPLIQUENT CES CHANGEMENTS SUR LES SURFACES D'ECHANGE; LA SOLUTION DU SOL: PAR RAPPORT AU TEMOIN, LA COMPOSITION DES EAUX A ETE MODIFIEE RAPIDEMENT (2 MOIS) PAR LE SULFATE AVEC UN ENRICHISSEMENT DU FLUX D'ALUMINIUM ET DE CALCIUM. L'EFFET DES CARBONATES SUR LA SOLUTION, SOUS (B) (-21 CM), A ETE MOINS RAPIDE (7 MOIS). LES ANALYSES DES EAUX MONTRENT UNE MODIFICATION DE LA DYNAMIQUE DE L'AZOTE. DANS LE TRAITEMENT CARBONATE LE MECANISME RESTE LE MEME ET L'ANION DOMINANT EST LE NITRATE. DANS LE TRAITEMENT CASO#4, L'ANION VECTEUR EST LE SULFATE, 52% DE L'AZOTE D'AZOTE EST TRANSPORTE HORS DU PROFIL SOUS FORME D'AMMONIUM
Author: SAID.. BELKACEM
Publisher:
ISBN:
Category :
Languages : fr
Pages : 188
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Book Description
LA RESATURATION DES SOLS FORESTIERS ACIDES ET LEUR DYNAMIQUE SONT ABORDEES PAR L'ETUDE DES EFFETS DES FORMES ET QUANTITES D'AMENDEMENTS APPORTES, EN INTERACTION AVEC LA QUALITE DE L'HUMUS. LE CACO#3, CACO#3+MGO ET CASO#4 SONT APPORTES EN SURFACE AVEC DES DOSES DE 0, 0.56, 2.8 ET 5.6 T/HA EQUIVALENT CAO ET LES PRINCIPAUX RESULTATS SONT: LE SOL: LA VALEUR DU PH DU SOL EST AUGMENTEE DE 4 UNITES PH DANS LES COUCHES DE SURFACE (A#1) ET D'UNE UNITE PH EN MOYENNE EN PROFONDEUR (B) AVEC LES AMENDEMENTS CARBONATES. LA RESATURATION A ETE RAPIDE (MOINS DE 7 MOIS) DANS LES PREMIERS CENTIMETRES DU SOL AVEC UNE MIGRATION EGALEMENT DE PARTICULES DE CARBONATES (>40% DU CA) DE LA LITIERE VERS LA COUCHE A#1#1 (-3 CM). LA SATURATION N'EST PAS MODIFIEE DANS LES COUCHES INFERIEURES DU (B) (16 A 21 CM), SAUF POUR LA FORME SULFATE OU ELLE A AUGMENTE DE 50% PAR RAPPORT AU TEMOIN. LES MECANISMES D'ECHANGES DE L'ALUMINIUM PAR LE CALCIUM EXPLIQUENT CES CHANGEMENTS SUR LES SURFACES D'ECHANGE; LA SOLUTION DU SOL: PAR RAPPORT AU TEMOIN, LA COMPOSITION DES EAUX A ETE MODIFIEE RAPIDEMENT (2 MOIS) PAR LE SULFATE AVEC UN ENRICHISSEMENT DU FLUX D'ALUMINIUM ET DE CALCIUM. L'EFFET DES CARBONATES SUR LA SOLUTION, SOUS (B) (-21 CM), A ETE MOINS RAPIDE (7 MOIS). LES ANALYSES DES EAUX MONTRENT UNE MODIFICATION DE LA DYNAMIQUE DE L'AZOTE. DANS LE TRAITEMENT CARBONATE LE MECANISME RESTE LE MEME ET L'ANION DOMINANT EST LE NITRATE. DANS LE TRAITEMENT CASO#4, L'ANION VECTEUR EST LE SULFATE, 52% DE L'AZOTE D'AZOTE EST TRANSPORTE HORS DU PROFIL SOUS FORME D'AMMONIUM
Author: Leslie Rainer
Publisher: Getty Publications
ISBN: 1606060430
Category : Architecture
Languages : fr
Pages : 438
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Book Description
Earthen architecture constitutes one of the most diverse forms of cultural heritage and one of the most challenging to preserve. It dates from all periods and is found on all continents but is particularly prevalent in Africa, where it has been a building tradition for centuries. Sites range from ancestral cities in Mali to the palaces of Abomey in Benin, from monuments and mosques in Iran and Buddhist temples on the Silk Road to Spanish missions in California. This volume's sixty-four papers address such themes as earthen architecture in Mali, the conservation of living sites, local knowledge systems and intangible aspects, seismic and other natural forces, the conservation and management of archaeological sites, research advances, and training.
Author: Eric J. Roose
Publisher: CRC Press
ISBN: 113546054X
Category : Nature
Languages : en
Pages : 499
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Book Description
The most complete, nonpartisan source of information on this hot agronomic topic available today, this book brings together a diverse group of papers and data to resolve the debate between sedimentologists and soil scientists and agronomists over whether the effects of soil erosion on carbon and atmospheric CO2 is beneficial or destructive. Divided into four sections, it offers data on how soil erosion affects soil, water, and air quality. Topics include mineralization rate, inundation, sediment deposition, and global warming potential, as well as carbon dioxide, methane, and nitrous oxide emissions, and the implications of soil erosion on the global carbon cycle and carbon budget.
Author: Jojo Moyes
Publisher: Penguin
ISBN: 1101606371
Category : Fiction
Languages : en
Pages : 385
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Book Description
From the #1 New York Times bestselling author of The Giver of Stars and the forthcoming Someone Else's Shoes, discover the love story that captured over 20 million hearts in Me Before You, After You, and Still Me. They had nothing in common until love gave them everything to lose . . . Louisa Clark is an ordinary girl living an exceedingly ordinary life—steady boyfriend, close family—who has barely been farther afield than their tiny village. She takes a badly needed job working for ex–Master of the Universe Will Traynor, who is wheelchair bound after an accident. Will has always lived a huge life—big deals, extreme sports, worldwide travel—and now he’s pretty sure he cannot live the way he is. Will is acerbic, moody, bossy—but Lou refuses to treat him with kid gloves, and soon his happiness means more to her than she expected. When she learns that Will has shocking plans of his own, she sets out to show him that life is still worth living. A Love Story for this generation and perfect for fans of John Green’s The Fault in Our Stars, Me Before You brings to life two people who couldn’t have less in common—a heartbreakingly romantic novel that asks, What do you do when making the person you love happy also means breaking your own heart?
Author: Samuel Adjei-Nsiah
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 234
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Book Description
However, there is still considerable scope for further development of these self-organised innovations.
Author: J. Gautheyrou
Publisher: CRC Press
ISBN: 9789054107163
Category : Technology & Engineering
Languages : en
Pages : 514
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Book Description
The objective of this book is to provide a better understanding of tools for soil analysis in order to use them more efficiently. It covers sampling problems as well as difficulties relating to actual analysis and quality control.
Author: Jacqueline Ki-Zerbo
Publisher: Univ of California Press
ISBN: 9780520066960
Category : History
Languages : en
Pages : 372
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Book Description
"This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description
Author: Bihini won wa Musiti
Publisher: IUCN
ISBN: 2831706904
Category : Conservation of natural resources
Languages : ru
Pages : 344
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Book Description
This bilingual publication results from a four-day symposium aimed at capturing the general directions and analytical issues that characterize approaches to sustainable use in Africa. The papers included in this work are organized under four major headings: modes of use, devolution, scale issues and external issues. Authors explore these themes through the use of case studies and the description of specific regional experiences. External issues are further explored in a series of commissioned policy papers which have also been included.
Author: Valentina Mazzucato
Publisher:
ISBN:
Category : Agricultural systems
Languages : en
Pages : 424
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Book Description
Author: Stuart Hill
Publisher: Birkhäuser
ISBN: 3034863101
Category : Science
Languages : en
Pages : 364
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Book Description
