Impacts of rising atmospheric carbon dioxide on model terrestrial ecosystems

被引:183
作者
Jones, TH
Thompson, LJ
Lawton, JH
Bezemer, TM
Bardgett, RD
Blackburn, TM
Bruce, KD
Cannon, PF
Hall, GS
Hartley, SE
Howson, G
Jones, CG
Kampichler, C
Kandeler, E
Ritchie, DA
机构
[1] Univ London Imperial Coll Sci Technol & Med, NERC, Ctr Populat Biol, Ascot SL5 7PY, Berks, England
[2] Univ Manchester, Sch Biol Sci, Manchester M13 9PT, Lancs, England
[3] Univ Liverpool, Sch Biol Sci, Donnan Lab, Liverpool L69 7ZD, Merseyside, England
[4] CABI Biosci, Surrey TW20 9TY, England
[5] Inst Terr Ecol, Banchory Res Stn, Banchory AB31 4BY, Kincardine, Scotland
[6] Inst Terr Ecol, Merlewood Res Stn, Grange Over Sands LA11 6JU, Cumbria, England
[7] Inst Ecosyst Studies, Millbrook, NY 12545 USA
[8] Univ Vienna, Inst Zool, A-1090 Vienna, Austria
[9] Fed Agcy & Res Ctr Agr, Inst Soil Management, A-1226 Vienna, Austria
关键词
D O I
10.1126/science.280.5362.441
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In model terrestrial ecosystems maintained for three plant generations at elevated concentrations of atmospheric carbon dioxide, increases in photosynthetically fixed carbon were allocated below ground, raising concentrations of dissolved organic carbon in soil. These effects were then transmitted up the decomposer food chain. Soil microbial biomass was unaffected, but the composition of soil fungal species changed, with increases in rates of cellulose decomposition. There were also changes in the abundance and species composition of Collembola, fungal-feeding arthropods. These results have implications for long-term feedback processes in soil ecosystems that are subject to rising global atmospheric carbon dioxide concentrations.
引用
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页码:441 / 443
页数:3
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