NDLI: Comparing soil CO$_{2}$ emission in pine plantation and oak shrub: dynamics and correlations

Content Provider	Springer Nature Link
Author	Wu, Yaqiong Liu, Guohua Fu, Bojie Liu, Zhanfeng Hu, Huifeng
Copyright Year	2006
Abstract	The magnitude of soil CO$_{2}$ emission varying significantly among different vegetation types for plants could alter the microclimatic environment of soil. In a Pinus tabulaeformis plantation and an adjacent Quercus aliena var. acuteserrata shrub, which are located in a dry-hot valley region of Minjiang River in the Southwest of China, the daily soil CO$_{2}$ emission dynamics was measured in August 2004 and in May, July, and October 2005. The results showed that the soil CO$_{2}$ emission in the oak shrub was significantly higher than the pine plantation in each measurement period. Additionally, soil organic matter, microbial biomass carbon, and the leaf litter decomposition rate in the two vegetations differed significantly from each other. The variation of soil organic matter and microbial biomass carbon partially contributed to the evident difference in soil CO$_{2}$ emission. Moreover, the correlations between soil CO$_{2}$ emission, soil temperature, and soil water content were evaluated in this study. The soil temperature positively controlled soil CO$_{2}$ emission in the pine plantation and the oak shrub, while the soil water content negatively influenced soil CO$_{2}$ emission in the two vegetation types. However, the soil temperature and soil water content played varied roles in the different vegetation types. By the means of stepwise regression, the soil temperature more significantly influenced the dynamics of soil CO$_{2}$ emission for the plantation than the soil water content; oppositely, the soil water content was the more significant controlling factor for the shrub. Based on the exponent model between the soil CO$_{2}$ emission and soil temperature, the Q $_{10}$ values were estimated, which was 1.7 in the pine plantation and 3.0 in the oak shrub. The former was lower than the global average level of 2.0, whereas the latter was higher than the global average level.
Starting Page	840
Ending Page	848
Page Count	9
File Format	PDF
ISSN	09123814
Journal	Ecological Research
Volume Number	21
Issue Number	6
e-ISSN	14401703
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-10-28
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Soil CO$_{2}$ emission Pine plantation Oak shrub Dynamics Controlling factors Forestry Behavioural Sciences Evolutionary Biology Zoology Plant Sciences Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

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