NDLI: Temporal patterns of soil CO2 efflux in a temperate Korean Larch (Larix olgensis Herry.) plantation, Northeast China

Content Provider	Springer Nature Link
Author	You, Wenzhong Wei, Wenjun Zhang, Huidong Yan, Tingwu Xing, Zhaokai
Copyright Year	2013
Abstract	There is little information available regarding seasonal and annual variations in soil CO2 efflux from Korean Larch plantations, which are an important component of forests’ carbon balance in temperate China. In this study, the soil respiration rate (R s), soil temperature (T 10) and soil moisture (SM10) at 10 cm depth were observed in a Korean Larch (Larix olgensis Herry.) plantation in Northeast China from 2008 to 2012. Mean R s in growing season (GS) varied greatly, ranged from 2.32 ± 0.08 to 3.88 ± 0.09 μmol CO2 m−2 s−1 (mean ± SE) over the period of 2008–2012. In comparison with T-model, the increase of explained variability by applying both T 10 and SM10 to the T-M model is very small. It is indicated that R s was controlled largely by T 10 in the present study. By accounting for 22.2 and 17.7 % of the total soil CO2 emissions in 2010/2011 and 2011/2012, respectively, the soil CO2 efflux in dormant season (DS) was an essential component of the total soil CO2 efflux. The Q 10 value in the study period was always smaller for GS than DS, suggesting that soil carbon cycling may be more sensitive to the temperature changes at low than at high temperature range. These results indicated that climate changes may have great potential impacts on temperate Larch plantations in Northeast China, owing to soil carbon emissions of Larch plantation during the long period of DS being more sensitive to T 10 than in GS, and played a significant role in the annual forest ecosystems carbon budget.
Starting Page	1417
Ending Page	1428
Page Count	12
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	27
Issue Number	5
e-ISSN	14322285
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-06-29
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Korean Larch plantation Soil respiration rate Soil CO2 efflux Growing season Dormant season Forestry Plant Sciences Agriculture Plant Anatomy/Development Plant Pathology Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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