Organic-Matter Pools of Soil under Pines and Annual Cultures

被引:33
作者
Wendling, B. [1 ]
Jucksch, I. [1 ]
Mendonca, E. S. [1 ]
Alvarenga, R. C. [1 ]
机构
[1] Univ Fed Uberlandia, Inst Agr Sci, BR-38400902 Uberlandia, MG, Brazil
关键词
Labile fractions; management indexes; nitrogen; no tillage; organic carbon; MICROBIAL BIOMASS CARBON; DIFFERENT MANAGEMENT-SYSTEMS; DIRECT EXTRACTION METHOD; NO-TILLAGE; FRACTIONS; NITROGEN; CULTIVATION; STORAGE; FOREST; MINERALIZATION;
D O I
10.1080/00103624.2010.489135
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
When submitted to different uses and managements, soils can suffer alterations in the amount and in the quality of carbon and nitrogen present in the soil. This study's objective was to evaluate carbon and nitrogen in different compartments of the organic matter of the soil under savannah, 30-year-old pine plantation, and annual cultivations with corn and soy under conventional preparation and direct planting after 10 years of age. The substitution of the savannah for the pines and annual cultures reduces the carbon and total nitrogen in the soil. Among the compartments, only the particulate-free light fraction is not reduced in the Pinus in relation to the savannah. No tillage presents potential for improvement of the quality of the soil to make the fractions of carbon more labile in the soil. The more labile fractions reflect the alterations well imposed in the use and management of the soil, and they can be used as sensitive and premature indicators of the quality of the soil. They can be used for calculation of the carbon management index.
引用
收藏
页码:1707 / 1722
页数:16
相关论文
共 41 条
[1]  
Alvarenga M. I. N., 1999, Ciencia e Agrotecnologia, V23, P617
[2]   RATIOS OF MICROBIAL BIOMASS CARBON TO TOTAL ORGANIC-CARBON IN ARABLE SOILS [J].
ANDERSON, TH ;
DOMSCH, KH .
SOIL BIOLOGY & BIOCHEMISTRY, 1989, 21 (04) :471-479
[3]  
[Anonymous], 2002, MICROBIOLOGIA BIOQUI
[4]   Carbon storage in labile fractions of soil organic matter in a tropical no-tillage Oxisol [J].
Bayer, C ;
Martin-Neto, L ;
Mielniczuk, J ;
Pavinato, A .
PESQUISA AGROPECUARIA BRASILEIRA, 2004, 39 (07) :677-683
[5]  
Bayer Cimélio, 2002, Cienc. Rural, V32, P401, DOI 10.1590/S0103-84782002000300006
[6]   Soil carbon changes resulting from sugarcane trash management at two locations in Queensland, Australia, and in North-East Brazil [J].
Blair, GJ ;
Chapman, L ;
Whitbread, AM ;
Ball-Coelho, B ;
Larsen, P ;
Tiessen, H .
AUSTRALIAN JOURNAL OF SOIL RESEARCH, 1998, 36 (06) :873-881
[7]   SOIL CARBON FRACTIONS BASED ON THEIR DEGREE OF OXIDATION, AND THE DEVELOPMENT OF A CARBON MANAGEMENT INDEX FOR AGRICULTURAL SYSTEMS [J].
BLAIR, GJ ;
LEFROY, RDB ;
LISE, L .
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 1995, 46 (07) :1459-1466
[8]   LIGHT-FRACTION SOIL ORGANIC-MATTER - ORIGIN AND CONTRIBUTION TO NET NITROGEN MINERALIZATION [J].
BOONE, RD .
SOIL BIOLOGY & BIOCHEMISTRY, 1994, 26 (11) :1459-1468
[9]   CHLOROFORM FUMIGATION AND THE RELEASE OF SOIL-NITROGEN - A RAPID DIRECT EXTRACTION METHOD TO MEASURE MICROBIAL BIOMASS NITROGEN IN SOIL [J].
BROOKES, PC ;
LANDMAN, A ;
PRUDEN, G ;
JENKINSON, DS .
SOIL BIOLOGY & BIOCHEMISTRY, 1985, 17 (06) :837-842
[10]   PARTICULATE SOIL ORGANIC-MATTER CHANGES ACROSS A GRASSLAND CULTIVATION SEQUENCE [J].
CAMBARDELLA, CA ;
ELLIOTT, ET .
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1992, 56 (03) :777-783