气候变化领域集成服务门户(CCPortal): Potential contributions of pre-Inca infiltration infrastructure to Andean water security

CCPortal

DOI	10.1038/s41893-019-0307-1
	Potential contributions of pre-Inca infiltration infrastructure to Andean water security
	Ochoa-Tocachi B.F.; Bardales J.D.; Antiporta J.; Pérez K.; Acosta L.; Mao F.; Zulkafli Z.; Gil-Ríos J.; Angulo O.; Grainger S.; Gammie G.; De Bièvre B.; Buytaert W.
发表日期	2019
ISSN	2398-9629
起始页码	584
结束页码	593
卷号	2 期号:7
英文摘要	Water resources worldwide are under severe stress from increasing climate variability and human pressures. In the tropical Andes, pre-Inca cultures developed nature-based water harvesting technologies to manage drought risks under natural climatic extremes. While these technologies have gained renewed attention as a potential strategy to increase water security, limited scientific evidence exists about their potential hydrological contributions at catchment scale. Here, we evaluate a 1,400-year-old indigenous infiltration enhancement system that diverts water from headwater streams onto mountain slopes during the wet season to enhance the yield and longevity of downslope natural springs. Infiltrated water is retained for an average of 45 d before resurfacing, confirming the system’s ability to contribute to dry-season flows. We estimate that upscaling the system to the source-water areas of the city of Lima can potentially delay 99 × 106 m3 yr−1 of streamflow and increase dry-season flows by 7.5% on average, which may provide a critical complement to conventional engineering solutions for water security. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	Catchments; Climatology; Drought; Runoff; Water conservation; Climate variability; Engineering solutions; Headwater stream; Human pressures; Infiltrated water; Mountain slopes; Scientific evidence; Water harvesting; Infiltration
来源期刊	Nature Sustainability
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/163385
作者单位	Department of Civil and Environmental Engineering & Grantham Institute—Climate Change and the Environment, Imperial College London, London, United Kingdom; Regional Initiative for Hydrological Monitoring of Andean Ecosystems, Lima, Peru; Institute for Applied Sustainability Research, Quito, Ecuador; Superintendencia Nacional de Servicios de Saneamiento, Gerencia de Regulación Tarifaria, Lima, Peru; Consorcio para el Desarrollo Sostenible de la Ecorregión Andina, Lima, Peru; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom; Department of Civil Engineering, Universiti Putra Malaysia, Serdang, Malaysia; Departamento Académico de Ciencias Sociales, Pontificia Universidad Católica del Perú, Lima, Peru; School of Earth and Environment, University of Leeds, Leeds, United Kingdom; Forest Trends, Washington, DC, United States; Fondo para la Protección del Agua, Quito, Ecuador
推荐引用方式 GB/T 7714	Ochoa-Tocachi B.F.,Bardales J.D.,Antiporta J.,et al. Potential contributions of pre-Inca infiltration infrastructure to Andean water security[J],2019,2(7).
APA	Ochoa-Tocachi B.F..,Bardales J.D..,Antiporta J..,Pérez K..,Acosta L..,...&Buytaert W..(2019).Potential contributions of pre-Inca infiltration infrastructure to Andean water security.Nature Sustainability,2(7).
MLA	Ochoa-Tocachi B.F.,et al."Potential contributions of pre-Inca infiltration infrastructure to Andean water security".Nature Sustainability 2.7(2019).