Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics

Water scarcity contributes to the poverty of around one-third of the world’s people. Despite many benefits, tree planting in dry regions is often discouraged by concerns that trees reduce water availability. Yet relevant studies from the tropics are scarce, and the impacts of intermediate tree cover...

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Main Authors:	Ilstedt, Ulrik, Bargués Tobella, A, Bazié, HR, Bayala, J, Verbeeten, E, Nyberg, G, Sanou, J, Benegas, Laura, Murdiyarso, D, Laundon, H
Format:	Artículo
Language:	Inglés
Published:	2016
Subjects:	ECOLOGIA FORESTAL PLANTACION FORESTAL ARBOLES ORDENACION DE AGUAS AGUAS SUBTERRANEAS RECARGA DE AGUAS SUBTERRANEAS MOVIMIENTO DEL AGUA EN EL SUELO PROCESOS DE TRANSPORTE EN EL SUELO TRANSPIRACION DRENAJE LIXIVIACION INFILTRACION ZONA TROPICAL
Online Access:	https://repositorio.catie.ac.cr/handle/11554/8461 http://www.nature.com/articles/srep21930

id	RepoCATIE8461
record_format	dspace
spelling	RepoCATIE84612021-12-22T19:22:49Z Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics Ilstedt, Ulrik Bargués Tobella, A Bazié, HR Bayala, J Verbeeten, E Nyberg, G Sanou, J Benegas, Laura Murdiyarso, D Laundon, H ECOLOGIA FORESTAL PLANTACION FORESTAL ARBOLES ORDENACION DE AGUAS AGUAS SUBTERRANEAS RECARGA DE AGUAS SUBTERRANEAS MOVIMIENTO DEL AGUA EN EL SUELO PROCESOS DE TRANSPORTE EN EL SUELO TRANSPIRACION DRENAJE LIXIVIACION INFILTRACION ZONA TROPICAL Water scarcity contributes to the poverty of around one-third of the world’s people. Despite many benefits, tree planting in dry regions is often discouraged by concerns that trees reduce water availability. Yet relevant studies from the tropics are scarce, and the impacts of intermediate tree cover remain unexplored. We developed and tested an optimum tree cover theory in which groundwater recharge is maximized at an intermediate tree density. Below this optimal tree density the benefits from any additional trees on water percolation exceed their extra water use, leading to increased groundwater recharge, while above the optimum the opposite occurs. Our results, based on groundwater budgets calibrated with measurements of drainage and transpiration in a cultivated woodland in West Africa, demonstrate that groundwater recharge was maximised at intermediate tree densities. In contrast to the prevailing view, we therefore find that moderate tree cover can increase groundwater recharge, and that tree planting and various tree management options can improve groundwater resources. We evaluate the necessary conditions for these results to hold and suggest that they are likely to be common in the seasonally dry tropics, offering potential for widespread tree establishment and increased benefits for hundreds of millions of people. 2016-09-21T15:53:01Z 2016-09-21T15:53:01Z 2016 Artículo https://repositorio.catie.ac.cr/handle/11554/8461 http://www.nature.com/articles/srep21930 en Scientific reports. Volúmen 6 (2016), páginas 1-12 Programa de Cambio Climático y Cuencas (PCCC) info:eu-repo/semantics/openAccess application/pdf
institution	Centro Agronómico Tropical de Investigación y Enseñanza
collection	Repositorio CATIE
language	Inglés
topic	ECOLOGIA FORESTAL PLANTACION FORESTAL ARBOLES ORDENACION DE AGUAS AGUAS SUBTERRANEAS RECARGA DE AGUAS SUBTERRANEAS MOVIMIENTO DEL AGUA EN EL SUELO PROCESOS DE TRANSPORTE EN EL SUELO TRANSPIRACION DRENAJE LIXIVIACION INFILTRACION ZONA TROPICAL
spellingShingle	ECOLOGIA FORESTAL PLANTACION FORESTAL ARBOLES ORDENACION DE AGUAS AGUAS SUBTERRANEAS RECARGA DE AGUAS SUBTERRANEAS MOVIMIENTO DEL AGUA EN EL SUELO PROCESOS DE TRANSPORTE EN EL SUELO TRANSPIRACION DRENAJE LIXIVIACION INFILTRACION ZONA TROPICAL Ilstedt, Ulrik Bargués Tobella, A Bazié, HR Bayala, J Verbeeten, E Nyberg, G Sanou, J Benegas, Laura Murdiyarso, D Laundon, H Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics
description	Water scarcity contributes to the poverty of around one-third of the world’s people. Despite many benefits, tree planting in dry regions is often discouraged by concerns that trees reduce water availability. Yet relevant studies from the tropics are scarce, and the impacts of intermediate tree cover remain unexplored. We developed and tested an optimum tree cover theory in which groundwater recharge is maximized at an intermediate tree density. Below this optimal tree density the benefits from any additional trees on water percolation exceed their extra water use, leading to increased groundwater recharge, while above the optimum the opposite occurs. Our results, based on groundwater budgets calibrated with measurements of drainage and transpiration in a cultivated woodland in West Africa, demonstrate that groundwater recharge was maximised at intermediate tree densities. In contrast to the prevailing view, we therefore find that moderate tree cover can increase groundwater recharge, and that tree planting and various tree management options can improve groundwater resources. We evaluate the necessary conditions for these results to hold and suggest that they are likely to be common in the seasonally dry tropics, offering potential for widespread tree establishment and increased benefits for hundreds of millions of people.
format	Artículo
author	Ilstedt, Ulrik Bargués Tobella, A Bazié, HR Bayala, J Verbeeten, E Nyberg, G Sanou, J Benegas, Laura Murdiyarso, D Laundon, H
author_facet	Ilstedt, Ulrik Bargués Tobella, A Bazié, HR Bayala, J Verbeeten, E Nyberg, G Sanou, J Benegas, Laura Murdiyarso, D Laundon, H
author_sort	Ilstedt, Ulrik
title	Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics
title_short	Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics
title_full	Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics
title_fullStr	Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics
title_full_unstemmed	Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics
title_sort	intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics
publishDate	2016
url	https://repositorio.catie.ac.cr/handle/11554/8461 http://www.nature.com/articles/srep21930
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Intermediate tree cover can maximize groundwater recharge in the seasonally dry tropics

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