干旱区生态环境知识资源中心(Arid): A probabilistic framework for assessing the hydrological impact of Faidherbia albida in an arid area of Senegal

Arid

DOI	10.1016/j.jhydrol.2023.129717
	A probabilistic framework for assessing the hydrological impact of Faidherbia albida in an arid area of Senegal
	Diongue, Djim M. L.; Brunetti, Giuseppe; Stumpp, Christine; Do, Frederic C.; Roupsard, Olivier; Orange, Didier; Faye, Waly; Sow, Sidy; Jourdan, Christophe; Faye, Serigne
通讯作者	Brunetti, G
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	622
英文摘要	The Faidherbia tree (Faidherbia albida) is frequently used as an intercrop in Sahelian agroforestry parklands due to its multi-purpose advantages and reverse phenology. However, its effect upon the water balance remains unclear, due to the challenges in directly measuring water fluxes in the underlying vadose zone. Mechanistic hydrological models can be inversely calibrated on transient observations and used to partition different hy-drological components, but the computational burden of the analysis can become impractical if the model itself is computationally expensive. To overcome this limitation, and to provide novel insights into the hydrological role of Faidherbia, we combine a low-fidelity, one-dimensional hydrological model (HYDRUS-1D) with a kriging-based correction function to emulate the response of a high-fidelity, two-dimensional axisymmetric descrip-tion of the system (HYDRUS-2D). Multiannual measurements of soil moisture and sap flow in a Senegal agro-forestry parkland are used in conjunction with Bayesian inference to calibrate the resulting validated multifidelity surrogate, and to inversely estimate soil hydraulic and root water uptake parameters. Results show that the model can reproduce observations with good accuracy and limited uncertainty for both the calibration and the validation phases, and also confirm the phreatophytic behaviour of Faidherbia by indicating the exis-tence of a moderately compensated root water uptake. Moreover, a local sensitivity analysis suggests that a fully compensated uptake could potentially reduce groundwater recharge by 13%. Interestingly, estimated soil hy-draulic parameters hint at the possibility of root-induced changes in soil hydraulic properties that mimic pref-erential and/or macropore flow, resulting in sustained recharge fluxes (approximate to 26% of the annual precipitation). The analysis indicates that overall, Faidherbia could have a net positive effect upon the water balance in arid areas.
英文关键词	Arid areas HYDRUS Surrogate Calibration Phreatophyte
类型	Article
语种	英语
开放获取类型	Green Published, hybrid
收录类别	SCI-E
WOS记录号	WOS:001010664800001
WOS关键词	ROOT WATER-UPTAKE ; HYDRAULIC CONDUCTIVITY ; AGROFORESTRY PARKLAND ; GROUNDWATER RECHARGE ; SUBSURFACE FLOW ; FOREST CANOPY ; SAP FLOW ; MODEL ; TRANSPIRATION ; EVAPORATION
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397403
推荐引用方式 GB/T 7714	Diongue, Djim M. L.,Brunetti, Giuseppe,Stumpp, Christine,et al. A probabilistic framework for assessing the hydrological impact of Faidherbia albida in an arid area of Senegal[J],2023,622.
APA	Diongue, Djim M. L..,Brunetti, Giuseppe.,Stumpp, Christine.,Do, Frederic C..,Roupsard, Olivier.,...&Faye, Serigne.(2023).A probabilistic framework for assessing the hydrological impact of Faidherbia albida in an arid area of Senegal.JOURNAL OF HYDROLOGY,622.
MLA	Diongue, Djim M. L.,et al."A probabilistic framework for assessing the hydrological impact of Faidherbia albida in an arid area of Senegal".JOURNAL OF HYDROLOGY 622(2023).