Arid
DOI10.1016/j.jaridenv.2017.12.004
Changes in soil hydraulic properties, soil moisture and water balance in Acacia senegal plantations of varying age in Sudan
Abaker, Wafa E.1,2; Berninger, Frank3; Starr, Mike3
通讯作者Abaker, Wafa E.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2018
卷号150页码:42-53
英文摘要

The effects of Acacia senegal trees on soil moisture (SM) and hydraulic properties in relation to plantations age and associated changes in soil organic carbon (SOC) were investigated and compared to grasslands at two sites in Sudan. Soil hydraulic properties were computed using pedotransfer functions based on texture and SOC, and SM measured using TDR. The measured SM data was used to parametrize a simple daily water balance model in which Hortonian runoff was calculated using the SCS runoff curve number (CM) method and evapotranspiration calculated using crop coefficients, K-c, adjusted to seasonal values using NDVI. Measured SM was higher in the grasslands than plantations, but increased with plantation age, reflecting a similar trend in plantation SOC and plant available water capacities. The modelling resulted in lower runoff from the plantations, increased infiltration, evapotranspiration, reduced drainage and lower SM, as shown by measurements. Greater SM contents in the grasslands were attributed to lower evapotranspiration and resulted in greater drainage fluxes compared to the plantations. The study highlighted the need for more empirical studies on the effect of tree density and cover on rainfall-runoff relationships, infiltration, evapotranspiration and drainage in drylands, especially those of the drier parts of semi-arid Africa.


英文关键词Drylands Sahel Woodland Savanna Soil carbon Plant available water capacity
类型Article
语种英语
国家Finland ; Sudan
收录类别SCI-E
WOS记录号WOS:000424718100007
WOS关键词CARBON SEQUESTRATION ; DAILY EVAPOTRANSPIRATION ; CROP COEFFICIENTS ; VEGETATION INDEX ; LAND DEGRADATION ; RUNOFF ; ECOSYSTEMS ; INFILTRATION ; SYSTEM ; MODIS
WOS类目Ecology ; Environmental Sciences
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/2XILL650/210532
作者单位1.Univ Helsinki, Viikki Trop Resources Inst VITRI, Dept Forest Sci, POB 27, FIN-00014 Helsinki, Finland;
2.Univ Khartoum, Fac Forestry, Shambat 13314, Sudan;
3.Univ Helsinki, Dept Forest Sci, POB 27, FI-00014 Helsinki, Finland
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Abaker, Wafa E.,Berninger, Frank,Starr, Mike. Changes in soil hydraulic properties, soil moisture and water balance in Acacia senegal plantations of varying age in Sudan[J],2018,150:42-53.
APA Abaker, Wafa E.,Berninger, Frank,&Starr, Mike.(2018).Changes in soil hydraulic properties, soil moisture and water balance in Acacia senegal plantations of varying age in Sudan.JOURNAL OF ARID ENVIRONMENTS,150,42-53.
MLA Abaker, Wafa E.,et al."Changes in soil hydraulic properties, soil moisture and water balance in Acacia senegal plantations of varying age in Sudan".JOURNAL OF ARID ENVIRONMENTS 150(2018):42-53.
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