Ecohydrological feedbacks confound peat-based climate reconstructions

被引：101

作者：

Swindles, Graeme T. ^{[1
]}

Morris, Paul J. ^{[2
]}

Baird, Andy J. ^{[1
]}

Blaauw, Maarten ^{[3
]}

Plunkett, Gill ^{[3
]}

机构：

[1] Univ Leeds, Sch Geog, Leeds LS2 9JT, W Yorkshire, England

[2] Univ Reading, Soil Res Ctr, Dept Geog & Environm Sci, Reading, Berks, England

[3] Queens Univ Belfast, Sch Geog Archaeol & Palaeoecol, Belfast, Antrim, North Ireland

来源：

GEOPHYSICAL RESEARCH LETTERS | 2012年 / 39卷

关键词：

HOLOCENE; PEATLANDS; RECORDS; VARIABILITY; DYNAMICS; BOGS; YR;

D O I：

10.1029/2012GL051500

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Water-table reconstructions from Holocene peatlands are increasingly being used as indicators of terrestrial palaeoclimate in many regions of the world. However, the links between peatland water tables, climate, and long-term peatland development are poorly understood. Here we use a combination of high-resolution proxy climate data and a model of long-term peatland development to examine the relationship between rapid hydrological fluctuations in peatlands and climatic forcing. We show that changes in water-table depth can occur independently of climate forcing. Ecohydrological feedbacks inherent in peatland development can lead to a degree of homeostasis that partially disconnects peatland water-table behaviour from external climatic influences. We conclude by suggesting that further work needs to be done before peat-based climate reconstructions can be used to test climate models. Citation: Swindles, G. T., P. J. Morris, A. J. Baird, M. Blaauw, and G. Plunkett (2012), Ecohydrological feedbacks confound peat-based climate reconstructions, Geophys. Res. Lett., 39, L11401, doi:10.1029/2012GL051500.

引用

页数：4

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