MARC details
| 000 -LEADER |
|---|
| fixed length control field |
03562naa a22005177a 4500 |
| 001 - CONTROL NUMBER |
|---|
| control field |
39649 |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
CO-PlCIA |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
|---|
| control field |
20130510152949.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
|---|
| fixed length control field |
120502t1999 000 0seng d |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
CO-PlCIA |
| Transcribing agency |
CO-PlCIA |
| 041 ## - LANGUAGE CODE |
|---|
| Language code of text/sound track or separate title |
eng |
| 050 ## - LIBRARY OF CONGRESS CALL NUMBER |
|---|
| Classification number |
S 623 .S977 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Neufeldt, Henry |
| 9 (RLIN) |
6086 |
| 245 ## - TITLE STATEMENT |
|---|
| Title |
Soil organic matter in oxisols of the Brazilian cerrados |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
p. 89-109 |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc |
Little is known about the sustainability of cultivation systems in the Brazilian savannas, also known as the Cerrados, despite its increasing significance for that country's agriculture. To characterize management effects and follow alterations of organic compounds in different fractions, we studied whole-soil samples and particle-size separates from clayey and loamy Oxisols under crops, pastures, reforested sites, and savanna. We assessed soil organic carbon (SOC), polysaccharides, and CuO oxidation products (VSC-lignin). Few changes were found in SOC contents of topsoil (0-12 cm) under different land uses after 10-20 years. But organic carbon clearly diminished under continuous cropping on the loamy soil and under reforestation with pine on the clayey soil. Management effects on SOC were more apparent in sand fractions, suggesting that particulate organic matter (POM) was affected most. In the clay fraction, only minor effects were noted. Carbon-normalized polysaccharide contents were enriched under pastures and depleted under pine, but generally followed a similar distribution to that of SOC. Overall, both polysaccharides and VSC-lignin were closely related to soil porosity. Plant-derived polysaccharides and lignin contents were probably regulated by water availability to soil microbes, so that decomposition was usually more advanced in the clayey soils. Ten years of continuous cropping lowered litter inputs, thus reducing POM, whereas humified organic matter (OM) was unaffected. Planting eucalyptus or well-managed pastures, which produce high amounts of POM, would thus rapidly reverse soil degradation. Continuous cropping does eventually reduce the humified fraction and results in a substantial loss of soil fertility, which is only slowly reversible. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Savannas |
| 9 (RLIN) |
2478 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Particle size |
| 9 (RLIN) |
6104 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Polysaccharides |
| 9 (RLIN) |
6105 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Soil organic matter |
| 9 (RLIN) |
3541 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Lignins |
| 9 (RLIN) |
4915 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Sabanas |
| 9 (RLIN) |
2494 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Oxisoles |
| 9 (RLIN) |
5566 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Tamaño de la partícula |
| 9 (RLIN) |
6106 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Estructura del suelo |
| 9 (RLIN) |
4423 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Polisacáridos |
| 9 (RLIN) |
6107 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Materia orgánica del suelo |
| 9 (RLIN) |
3545 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name as entry element |
Ligninas |
| 9 (RLIN) |
4924 |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Cerrados |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
CIAT Editor |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Book chapters |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Capítulos de libros |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Química y física del suelo |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Cerrados |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Oxisols |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Soil chemistry and physics |
| 653 ## - INDEX TERM--UNCONTROLLED |
|---|
| Uncontrolled term |
Book chapters |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Resck, Dimas Vital Siqueira |
| 9 (RLIN) |
6095 |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Ayarza, Miguel Angel |
| 9 (RLIN) |
644 |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Zech, Wolfgang |
| 9 (RLIN) |
4436 |
| 773 ## - HOST ITEM ENTRY |
|---|
| Title |
In: Thomas, Richard J.; Ayarza, Miguel Angel (eds.). Sustainable land management for the oxisols of the Latin American savannas: Dynamics of soil organic matter and indicators of soil quality |
| Place, publisher, and date of publication |
Cali, CO, Centro Internacional de Agricultura Tropical (CIAT), 1999 |
| Series data for related item |
CIAT publication no. 312 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS |
|---|
| Uniform Resource Identifier |
<a href="http://ciat-library.ciat.cgiar.org/Articulos_Ciat/biblioteca/Sustainable_land_management_for_the_oxis.pdf#page=98">http://ciat-library.ciat.cgiar.org/Articulos_Ciat/biblioteca/Sustainable_land_management_for_the_oxis.pdf#page=98</a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Book Chapters |
| 998 ## - Data Base |
|---|
| DataBase |
CATAL |
| 998 ## - Data Base |
|---|
| DataBase |
BICIAT |