A Footprint Analysis on a Desert Ecosystem in West China

doi:10.7522/j.issn.1000-694X.2013.00289

JOURNAL OF DESERT RESEARCH

2014, Vol. 34

Issue (1): 98-107 DOI: 10.7522/j.issn.1000-694X.2013.00289

A Footprint Analysis on a Desert Ecosystem in West China

Zhou Qi^1,2, Li Pingheng^1,3, Wang Quan^1,3, Zheng Chaolei³, Xu Lu^1,2

1. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumchi 830011, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Shizuoka University, Japan 422-8529

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Abstract Footprint analysis is essential for eddy covariance tower site selection, quality-control and data-interpretation. But only a few of such studies are available in the western China arid region till now. This study aims to fill the empty up by utilizing the FSAM Model (Flux Source Area Model) to analyze the spatial representation of flux measurements in this region. Flux data in the Gurbantunggut Desert Remote Sensing Experimental Station was used in this study. Results revealed that under stable atmospheric conditions, the far end of the source area reached 680.40 m with the maximum contribution source located at 162.50 m (at a 0.9 significant level).Variations of source area in different phenological stages were preliminary due to different wind directions when under similar conditions of atmospheric stability from the beginning to the mid-term of season, even the largest source areas were all found at the end of season ignorant of wind directions. Furthermore, under different conditions of atmospheric stability the source area are inconsistent in different wind directions. About 58.71% of flux came from the southwest to northwest of the tower with a contribution estimated to be as high as 40.16% at the end of growth period under the stable and unstable conditions. Our study suggests that our carbon dioxide flux data adequately revealed the characteristics of surface flux with desert ecosystem.

Key words: eddy covariance desert ecosystem footprint FSAM (Flux Source Area Model)

Received: 15 December 2012 Published: 20 January 2014

ZTFLH:

P404

Corresponding Authors: 王权，qw4academic@gmail.com E-mail: qw4academic@gmail.com



	Articles by authors
	Zhou Qi
	Li Pingheng
	Wang Quan
	Zheng Chaolei
	Xu Lu

Cite this article:

Zhou Qi, Li Pingheng, Wang Quan, Zheng Chaolei, Xu Lu. A Footprint Analysis on a Desert Ecosystem in West China. JOURNAL OF DESERT RESEARCH, 2014, 34(1): 98-107.

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http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00289 OR http://www.desert.ac.cn/EN/Y2014/V34/I1/98

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