干旱区生态环境知识资源中心(Arid): Vegetation dynamics dominate the energy flux partitioning across typical ecosystem in the Heihe River Basin: Observation with numerical modeling

Arid

	Vegetation dynamics dominate the energy flux partitioning across typical ecosystem in the Heihe River Basin: Observation with numerical modeling
	Wang Pei; Li Xiaoyan; Tong Yaqin; Huang Yongmei; Yang Xiaofan; Wu Xiuchen
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2019
卷号	29 期号:9 页码:1565-1577
英文摘要	Understanding the controls on seasonal variation of energy partitioning and separation between canopy and soil surface are important for qualifying the vegetation feedback to climate system. Using observed day-to-day variations of energy balance components including net radiation, sensible heat flux, latent heat flux ground heat flux, and meteorological variables combined with an energy-balanced two-source model, energy partitioning were investigated at six sites in Heihe River Basin from 2014 to 2016. Bowen ratio (beta) among the six sites exhibited significant seasonal variations while showed smaller inter-annual fluctuations. All ecosystems exhibit a U-shaped pattern, characterized by smaller value of beta in growing season, with a minimum value in July, and fluctuating day to day. During the growing season, average Bowen ratio was the highest for the alpine swamp meadow (0.60 0.30), followed by the desert riparian forest Populus euphratica (0.47 0.72), the alpine desert(0.46 0.10), the Tamarix ramosissima desert riparian shrub ecosystem (0.33 0.57), alpine meadow ecosystem (0.32 0.17), and cropland ecosystem (0.27 0.46). The agreement of Bowen ratio between simulated and observed values demonstrated that the two-source model is a promising tool for energy partitioning and separation between canopy and soil surface. The importance of biophysical control explains the convergence of seasonal and annual patterns of Bowen ratio for all ecosystems, and the changes in Bowen ratio showed divergence among varied ecosystems because of different physiological responses to energy flow pathways between canopy and soil surface.
英文关键词	vegetation dynamics seasonal variations Bowen ratio two-source modeling
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6544155
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336152
作者单位	Wang Pei, Faculty of Geographical Science, Beijing Normal University, State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China.; Li Xiaoyan, Faculty of Geographical Science, Beijing Normal University, State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China.; Tong Yaqin, Faculty of Geographical Science, Beijing Normal University, State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China.; Huang Yongmei, Faculty of Geographical Science, Beijing Normal University, State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China.; Yang Xiaofan, Faculty of Geographical Science, Beijing Normal University, State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China.; Wu Xiuchen, Faculty of Geographical Science, Beijing Normal University, State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing 100875, China.
推荐引用方式 GB/T 7714	Wang Pei,Li Xiaoyan,Tong Yaqin,et al. Vegetation dynamics dominate the energy flux partitioning across typical ecosystem in the Heihe River Basin: Observation with numerical modeling[J],2019,29(9):1565-1577.
APA	Wang Pei,Li Xiaoyan,Tong Yaqin,Huang Yongmei,Yang Xiaofan,&Wu Xiuchen.(2019).Vegetation dynamics dominate the energy flux partitioning across typical ecosystem in the Heihe River Basin: Observation with numerical modeling.Journal of Geographical Sciences,29(9),1565-1577.
MLA	Wang Pei,et al."Vegetation dynamics dominate the energy flux partitioning across typical ecosystem in the Heihe River Basin: Observation with numerical modeling".Journal of Geographical Sciences 29.9(2019):1565-1577.