CHANGES IN SOIL ORGANIC-MATTER WITH CROPPING AS MEASURED BY ORGANIC-CARBON FRACTIONS AND C-13 NATURAL ISOTOPE ABUNDANCE

被引：155

作者：

LEFROY, RDB ^{[1
]}

BLAIR, GJ ^{[1
]}

STRONG, WM ^{[1
]}

机构：

[1] QUEENSLAND WHEAT RES INST, TOOWOOMBA, QLD 4350, AUSTRALIA

来源：

PLANT AND SOIL | 1993年 / 155卷

关键词：

C-13; CROPPING SYSTEMS; DELTA-C-13; KMNO(4); OXIDATION; SOIL ORGANIC MATTER;

D O I：

10.1007/BF00025067

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The decline in soil organic matter with cropping is a major factor affecting the sustainability of cropping systems. Changes in total C levels are relatively insensitive as a sustainability measure. Oxidation with different strength KMnO4 has been shown to be a more sensitive indicator of change. The relative size of soil C fractions oxidised by 333mM KMnO4 declined with cropping, whilst the relative size of the unoxidised fraction increased. Changes in delta(13)C ratio have been used to measure C turnover in systems which include C3 and C4 species.

引用

页码：399 / 402

页数：4

共 5 条

[1] NATURAL C-13 ABUNDANCE AS A TRACER FOR STUDIES OF SOIL ORGANIC-MATTER DYNAMICS [J].

BALESDENT, J ;

MARIOTTI, A ;

GUILLET, B .

SOIL BIOLOGY & BIOCHEMISTRY, 1987, 19 (01) :25-30

[2]

LOGINOW W, 1987, Polish Journal of Soil Science, V20, P47

[3] USE OF C-13 VARIATIONS AT NATURAL ABUNDANCE FOR STUDYING THE BIODEGRADATION OF ROOT MUCILAGE, ROOTS AND GLUCOSE IN SOIL [J].

MARY, B ;

MARIOTTI, A ;

MOREL, JL .

SOIL BIOLOGY & BIOCHEMISTRY, 1992, 24 (10) :1065-1072

[4] 2 CATEGORIES OF C-13/C-12 RATIOS FOR HIGHER PLANTS [J].

SMITH, BN ;

EPSTEIN, S .

PLANT PHYSIOLOGY, 1971, 47 (03) :380-&

[5] ORGANIC-MATTER AND NATURAL C-13 DISTRIBUTION IN FORESTED AND CULTIVATED OXISOLS [J].

VITORELLO, VA ;

CERRI, CC ;

ANDREUX, F ;

FELLER, C ;

VICTORIA, RL .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1989, 53 (03) :773-778

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