Arid
DOI10.1002/2013WR015197
The effect of trees on preferential flow and soil infiltrability in an agroforestry parkland in semiarid Burkina Faso
Tobella, A. Bargues1; Reese, H.2; Almaw, A.1; Bayala, J.3; Malmer, A.1; Laudon, H.1; Ilstedt, U.1
通讯作者Tobella, A. Bargues
来源期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2014
卷号50期号:4页码:3342-3354
英文摘要

Water scarcity constrains the livelihoods of millions of people in tropical drylands. Tree planting in these environments is generally discouraged due to the large water consumption by trees, but this view may neglect their potential positive impacts on water availability. The effect of trees on soil hydraulic properties linked to groundwater recharge is poorly understood. In this study, we performed 18 rainfall simulations and tracer experiments in an agroforestry parkland in Burkina Faso to investigate the effect of trees and associated termite mounds on soil infiltrability and preferential flow. The sampling points were distributed in transects each consisting of three positions: (i) under a single tree, (ii) in the middle of an open area, and (iii) under a tree associated with a termite mound. The degree of preferential flow was quantified through parameters based on the dye infiltration patterns, which were analyzed using image analysis of photographs. Our results show that the degree of preferential flow was highest under trees associated with termite mounds, intermediate under single trees, and minimal in the open areas. Tree density also had an influence on the degree of preferential flow, with small open areas having more preferential flow than large ones. Soil infiltrability was higher under single trees than in the open areas or under trees associated with a termite mound. The findings from this study demonstrate that trees have a positive impact on soil hydraulic properties influencing groundwater recharge, and thus such effects must be considered when evaluating the impact of trees on water resources in drylands.


英文关键词semiarid tropics dry lands agroforestry parklands open woodlands trees termites infiltration preferential flow rainfall simulations Brilliant Blue FCF
类型Article
语种英语
国家Sweden ; Mali
收录类别SCI-E
WOS记录号WOS:000336026000033
WOS关键词PINYON-JUNIPER WOODLAND ; BRILLIANT BLUE FCF ; WATER INFILTRATION ; FRACTAL DIMENSIONS ; SOLUTE TRANSPORT ; DESERT ECOSYSTEM ; VEGETATION ; TERMITES ; MACROPORES ; MOVEMENT
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/185279
作者单位1.Swedish Univ Agr Sci SLU, Dept Forest Ecol & Management, Umea, Sweden;
2.Swedish Univ Agr Sci SLU, Dept Forest Resource Management, Umea, Sweden;
3.World Agroforestry Ctr ICRAF, West & Cent Africa Reg Off, Bamako, Mali
推荐引用方式
GB/T 7714
Tobella, A. Bargues,Reese, H.,Almaw, A.,et al. The effect of trees on preferential flow and soil infiltrability in an agroforestry parkland in semiarid Burkina Faso[J],2014,50(4):3342-3354.
APA Tobella, A. Bargues.,Reese, H..,Almaw, A..,Bayala, J..,Malmer, A..,...&Ilstedt, U..(2014).The effect of trees on preferential flow and soil infiltrability in an agroforestry parkland in semiarid Burkina Faso.WATER RESOURCES RESEARCH,50(4),3342-3354.
MLA Tobella, A. Bargues,et al."The effect of trees on preferential flow and soil infiltrability in an agroforestry parkland in semiarid Burkina Faso".WATER RESOURCES RESEARCH 50.4(2014):3342-3354.
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