SOIL ORGANIC-CARBON DYNAMICS AFTER 80 YEARS OF CROPPING A DARK BROWN CHERNOZEM

被引：53

作者：

MONREAL, CM ^{[1
]}

JANZEN, HH ^{[1
]}

机构：

[1] AGR CANADA,RES STN,LETHBRIDGE T1J 4B1,ALBERTA,CANADA

来源：

CANADIAN JOURNAL OF SOIL SCIENCE | 1993年 / 73卷 / 01期

关键词：

ORGANIC CARBON; DRY COMBUSTION; COLD-WET DICHROMATE DIGESTION;

D O I：

10.4141/cjss93-014

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The temporal change of soil organic-carbon (C(org)) was studied in soil samples taken from long-term crop rotations at Lethbridge. Between 1910 and 1990, net C(org) losses for the 0-15 cm depth varied between 23% under fallow-wheat (FW) and 21% under fallow-wheat-wheat (FWW) and 17% under continuous wheat (W). Analysis of variance and an LSD test indicated that in 1990 the surface C(org) concentrations were similar among all crop rotations. C(org) in the 15-30 cm depth decreased over time and was significantly lower than in surface samples.

引用

页码：133 / 136

页数：4

共 14 条

[1]

ATKINSON HJ, 1958, PUBL AGR CANADA, V169

[2]

DFFREYMAN S, 1982, CAN J PLANT SCI, V62, P609

[3] CHEMICAL-PROPERTIES OF SOIL AND WATER-STABLE AGGREGATES AFTER 67 YEARS OF CROPPING TO SPRING WHEAT [J].