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Seasonal variations and mechanism for environmental control of NEE of CO$_{2}$ concerning the Potentilla fruticosa in alpine shrub meadow of Qinghai-Tibet Plateau

Seasonal variation in carbon exchange and its ecological analysis over Leymus chinensis steppe in Inner Mongolia

Effect of water stress on ecosystem photosynthesis and respiration of a Leymus chinensis steppe in Inner Mongolia

Net ecosystem CO$_{2}$ exchange and controlling factors in a steppe—Kobresia meadow on the Tibetan Plateau

Response of canopy quantum yield of alpine meadow to temperature under low atmospheric pressure on Tibetan Plateau

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Science in China Series D: Earth Sciences : Volume 49, Issue 10, October 2006

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Seasonal variation in carbon exchange and its ecological analysis over Leymus chinensis steppe in Inner Mongolia

Content Provider	Springer Nature Link
Author	Hao, Yanbin Wang, Yanfen Sun, Xiaomin Huang, Xiangzhong Cui, Xiaoyong Niu, Haishan Zhang, Yahong Yu, Guirui
Copyright Year	2006
Abstract	Eddy covariance technique was used to measure carbon flux during two growing seasons in 2003 and 2004 over typical steppe in the Inner Mongolia Plateau, China. The results showed that there were two different CO$_{2}$ flux diurnal patterns at the grassland ecosystem. One had a dual peak in diurnal course of CO$_{2}$ fluxes with a depression of CO$_{2}$ flux after noon, and the other had a single peak. In 2003, the maximum diurnal uptake and emitting value of CO$_{2}$ were −7.4 and 5.4 g·m$^{−2}$·d$^{−1}$ respectively and both occurred in July. While in 2004, the maximum diurnal uptake and release of CO$_{2}$ were −12.8 and 5.8 g·m$^{−2}$·d$^{−1}$ and occurred both in August. The grassland fixed 294.66 and 467.46 g CO$_{2}$·m$^{−2}$ in 2003 and 2004, and released 333.14 and 437.17 g CO$_{2}$·m$^{−2}$ in 2003 and 2004, respectively from May to September. Water availability and photosynthetic active radiation (PAR) are two important factors of controlling CO$_{2}$ flux. Consecutive precipitation can cause reduction in the ability of ecosystem carbon exchange. Under favorable soil water conditions, daytime CO$_{2}$ flux is dependent on PAR. CO$_{2}$ flux, under soil water stress conditions, is obviously less than those under favorable soil water conditions, and there is a light saturation phenomena at PAR=1200 μmol·m$^{−2}$·s$^{−1}$. Soil respiration was temperature dependent when there was no soil water stress; otherwise, this response became accumulatively decoupled from soil temperature.
Starting Page	186
Ending Page	195
Page Count	10
File Format	PDF
ISSN	10069313
Journal	Science in China Series D: Earth Sciences
Volume Number	49
Issue Number	2
e-ISSN	18622801
Language	English
Publisher	Science in China Press
Publisher Date	2006-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	Leymus chinensis CO$_{2}$ flux photosynthetic active radiation light saturation phenomena eddy covariance technique Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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Effect of water stress on ecosystem photosynthesis and respiration of a Leymus chinensis steppe in Inner Mongolia

CH$_{4}$ uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China

Influencing factors and partitioning of respiration in a Leymus chinensis steppe in Xilin River Basin, Inner Mongolia, China

Seasonal and annual variation of CO$_{2}$ flux above a broad-leaved Korean pine mixed forest

Hydrometeorological controls on net carbon dioxide exchange over a temperate desert steppe in Inner Mongolia, China

Diversity and taxonomy of endophytes from Leymus chinensis in the Inner Mongolia steppe of China.

Rhizome Severing Increases Root Lifespan of Leymus chinensis in a Typical Steppe of Inner Mongolia

Characterization of caloric value in fifteen plant species in Leymus chinensis steppe in Xilin River Basin,Inner Mongolia

Carbon dioxide exchange processes over the grassland ecosystems in semiarid areas of China

Seasonal variation in carbon exchange and its ecological analysis over Leymus chinensis steppe in Inner Mongolia

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Effect of water stress on ecosystem photosynthesis and respiration of a Leymus chinensis steppe in Inner Mongolia

CH$_{4}$ uptake flux of Leymus chinensis steppe during rapid growth season in Inner Mongolia, China

Influencing factors and partitioning of respiration in a Leymus chinensis steppe in Xilin River Basin, Inner Mongolia, China

Seasonal and annual variation of CO$_{2}$ flux above a broad-leaved Korean pine mixed forest

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Seasonal variation in carbon exchange and its ecological analysis over Leymus chinensis steppe in Inner Mongolia