ARCTIC TUNDRA - A SOURCE OR SINK FOR ATMOSPHERIC CARBON-DIOXIDE IN A CHANGING ENVIRONMENT

被引：234

作者：

BILLINGS, WD ^{[1
]}

LUKEN, JO ^{[1
]}

MORTENSEN, DA ^{[1
]}

PETERSON, KM ^{[1
]}

机构：

[1] CLEMSON UNIV, DEPT BOT, CLEMSON, SC 29631 USA

来源：

OECOLOGIA | 1982年 / 53卷 / 01期

关键词：

D O I：

10.1007/BF00377129

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Intact cores from the wet coastal arctic tundra at Barrow, Alaska [USA], were used as microcosms in the measurement of CO2 fluxes between peat, vegetation and atmosphere under controlled conditions. Net ecosystem CO2 uptake was almost twice as high at present summer temperature (4.degree. C) than at 8.degree. C. Lowering the water table from the soil surface to -5 cm had a pronounced effect in decreasing net ecosystem C storage. Warming of the tundra climate could change this ecosystem from a sink for atmospheric CO2 to a source.

引用

页码：7 / 11

页数：5

共 21 条

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