Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau

NWIPB OpenIR

	Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau
	Kato, T ; Hirota, M ; Tang, YH ; Cui, XY ; Li, YN ; Zhao, XQ ; Oikawa, T
	2005-10-01
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY ; Kato Tomomichi, Hirota Mitsuru, Tang Yanhong, Cui Xiaoyong, Li Yingnian, Zhao Xinquan, Oikawa Takehisa.Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau.SOIL BIOLOGY & BIOCHEMISTRY,2005,37(10):1966-1969
摘要	We examined the CO2 exchange of a Kobresia meadow ecosystem on the Qinghai-Tibetan plateau using a chamber system. CO2 efflux from the ecosystem was strongly dependence on soil surface temperature. The COZ efflux-temperature relationship was identical under both light and dark conditions, indicating that no photosynthesis could be detected under light conditions during the measurement period. The temperature sensitivity (Q(10)) of the COZ efflux showed a marked transition around -1.0 degrees C; Q(10) was 2.14 at soil surface temperatures above and equal to -1.0 degrees C but was 15.3 at temperatures below -1.0 degrees C. Our findings suggest that soil surface temperature was the major factor controlling winter COZ flux for the alpine meadow ecosystem and that freeze-thaw cycles at the soil surface layer play an important role in the temperature dependence of winter CO2 flux. (c) 2005 Elsevier Ltd. All rights reserved.; We examined the CO2 exchange of a Kobresia meadow ecosystem on the Qinghai-Tibetan plateau using a chamber system. CO2 efflux from the ecosystem was strongly dependence on soil surface temperature. The COZ efflux-temperature relationship was identical under both light and dark conditions, indicating that no photosynthesis could be detected under light conditions during the measurement period. The temperature sensitivity (Q(10)) of the COZ efflux showed a marked transition around -1.0 degrees C; Q(10) was 2.14 at soil surface temperatures above and equal to -1.0 degrees C but was 15.3 at temperatures below -1.0 degrees C. Our findings suggest that soil surface temperature was the major factor controlling winter COZ flux for the alpine meadow ecosystem and that freeze-thaw cycles at the soil surface layer play an important role in the temperature dependence of winter CO2 flux. (c) 2005 Elsevier Ltd. All rights reserved.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/15197
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Kato, T,Hirota, M,Tang, YH,et al. Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau[J]. SOIL BIOLOGY & BIOCHEMISTRY, Kato Tomomichi, Hirota Mitsuru, Tang Yanhong, Cui Xiaoyong, Li Yingnian, Zhao Xinquan, Oikawa Takehisa.Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau.SOIL BIOLOGY & BIOCHEMISTRY,2005,37(10):1966-1969,2005.
APA	Kato, T.,Hirota, M.,Tang, YH.,Cui, XY.,Li, YN.,...&Oikawa, T.(2005).Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau.SOIL BIOLOGY & BIOCHEMISTRY.
MLA	Kato, T,et al."Strong temperature dependence and no moss photosynthesis in winter CO2 flux for a Kobresia meadow on the Qinghai-Tibetan plateau".SOIL BIOLOGY & BIOCHEMISTRY (2005).