干旱区生态环境知识资源中心(Arid): A novel approach for ecosystem respiration simulation in drylands

Arid

DOI	10.3389/fevo.2023.1186272
	A novel approach for ecosystem respiration simulation in drylands
	Ai, Jinlong; Qi, Xiaowen; Zhang, Rensen; He, Mingye; Li, Jingyang; Xu, Ronghan; Li, Yapeng; Sarmah, Sangeeta; Wang, Huan; Zhao, Junfang
通讯作者	Wang, H
来源期刊	FRONTIERS IN ECOLOGY AND EVOLUTION
ISSN	2296-701X
出版年	2023
卷号	11
英文摘要	Terrestrial ecosystem respiration (Reco) in drylands (arid and semi-arid areas) contributes to the largest uncertainty of the global carbon cycle. Here, using the Reco data from 24 sites (98 site-years) in drylands from Fluxnet and corresponding MODIS remote sensing products, we develop a novel semi-empirical, yet physiologically-based remote sensing model: the ILEP_Reco model (a Reco model derived from ILEP, the acronym for integrated LE and EVI proxy). This model can simulate Reco observations across most biomes in drylands with a small margin of error (R2 = 0.56, RMSE = 1.12 gCm-2d-1, EF = 0.46, MBE = -0.06 gCm-2d-1) and performs significantly better than the previous model: Ensemble_all. The seasonal variation of Reco in drylands can be well simulated by the ILEP_Reco model. When we relate ILEP to the Q10 model, the corresponding ILEP_Q10 values in all 98 site-years distribute quite convergently, which greatly facilitates fixing the ILEP_Q10 value as a constant in different site-years. The spatial variation of Reco in drylands is then defined as reference respiration at the annual mean ILEP, which can be easily and powerfully simulated by the ILEP_Reco model. These results help us understand the spatial-temporal variations of Reco in drylands and thus will shed light on the carbon budget on a regional scale, or even a global one.
英文关键词	terrestrial ecosystem respiration remote sensing drylands FLUXNET simulation
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001082924500001
WOS关键词	GLOBAL SOIL RESPIRATION ; CARBON-DIOXIDE EXCHANGE ; LATENT-HEAT FLUXES ; TEMPERATURE SENSITIVITY ; INTERANNUAL VARIABILITY ; SUBTERRANEAN VENTILATION ; ORGANIC-MATTER ; CO2 EMISSIONS ; SPRUCE FOREST ; CLIMATE
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396491
推荐引用方式 GB/T 7714	Ai, Jinlong,Qi, Xiaowen,Zhang, Rensen,et al. A novel approach for ecosystem respiration simulation in drylands[J],2023,11.
APA	Ai, Jinlong.,Qi, Xiaowen.,Zhang, Rensen.,He, Mingye.,Li, Jingyang.,...&Zhao, Junfang.(2023).A novel approach for ecosystem respiration simulation in drylands.FRONTIERS IN ECOLOGY AND EVOLUTION,11.
MLA	Ai, Jinlong,et al."A novel approach for ecosystem respiration simulation in drylands".FRONTIERS IN ECOLOGY AND EVOLUTION 11(2023).