运动中的水分：将绿色水纳入跨界水治理和发展融资——跨界水从业者的指导说明

Moisture in MotionPublic Disclosure Authorized Integrating Green Water in TransboundaryWater Governance and Development Finance A G U I D A N C E N O T E F O RT R A N S B O U N D A R Y W A T E R S P R A C T I T I O N E R S Edoardo BorgomeoLara Loske-GarciaChristina Leb © 2026 International Bank for Reconstruction and Development / The World Bank1818 H Street NWWashington DC 20433Telephone: 202-473-1000Internet:www.worldbank.org This work is a product of the staff of The World Bank with external contributions. The findings, interpretations,and conclusions expressed in this work do not necessarily reflect the views of The World Bank, its Board ofExecutive Directors, or the governments they represent. The World Bank does not guarantee the accuracy, completeness, or currency of the data included in this work anddoes not assume responsibility for any errors, omissions, or discrepancies in the information, or liability with respectto the use of or failure to use the information, methods, processes, or conclusions set forth. The boundaries, colors,denominations, links/footnotes and other information shown in this work do not imply any judgment on the part ofThe World Bank concerning the legal status of any territory or the endorsement or acceptance of such boundaries.The citation of works authored by others does not mean the World Bank endorses the views expressed by thoseauthors or the content of their works. Nothing herein shall constitute or be construed or considered to be a limitation upon or waiver of the privilegesand immunities of The World Bank, all of which are specifically reserved. Rights and Permissions The material in this work is subject to copyright. Because The World Bank encourages dissemination of itsknowledge, this work may be reproduced, in whole or in part, for noncommercial purposes as long as fullattribution to this work is given. Any queries on rights and licenses, including subsidiary rights, should be addressed to World Bank Publications,The World Bank Group, 1818 H Street NW, Washington, DC 20433, USA; fax: 202-522-2625; e-mail:pubrights@worldbank.org. Cover photo:© Linda Photography / Adobe Stock. Used with the permission of Linda Photography / AdobeStock. Further permission required for reuse. Acknowledgements This technical note was prepared by Edoardo Borgomeo (Water Resources Management Specialist, WKTWS),Lara Loske-Garcia (Water Analyst, WKTWS), and Christina Leb (Lead Water Specialist, WKTWP). The note wasprepared in response to a request from the Planet World Bank Group VPU leadership. The team is grateful to SarojKumar Jha (WBG Director, Water), Yogita Mumssen (Manager, WKTWP), and Eileen Burke (Global Lead for WaterResources, WKTWS) for support and guidance. The team is grateful to the following World Bank Group colleagues:Richard Damania, Esha Zaveri, Anders Jagerskog, Paola Agostini, Francine Kalgora, Sergio Vallesi, Zaki Shubber,Marcus Wishart, Poolad Karimi, and Hiromi Yamaguchi, and to Owen McIntyre (University College Cork), SusanneSchmeier (IHE-Delf and Utrecht University), John Dore (Australian Department of Foreign Affairs and Trade),and Paridis Someth (eWater) for their review, inputs, and suggestions. The team is grateful to Dieter Gerten andSimon Fahrlaender (Potsdam Institute for Climate Impact Research) and Elena De Petrillo (Politecnico di Torino)for providing data on green water recycling. This technical note was made possible with support from the GlobalWater Security and Sanitation Partnership (GWSP) and the Global Environment Facility (GEF). About This Note Key Takeaways This note examines theimplications of green waterfor transboundary watergovernance and finance,drawing on recent scientificadvances and a review ofgovernance and regulatoryframeworks. It presentsrecommendations to riverbasin organizations, nationalgovernments, multilateralorganizations, civil society,the private sector, andacademia for leveraginggreen water to deliver watersecurity, growth, and jobs. •Green water is one of the most abundant sources offreshwater on the planet and contributes profoundlyto jobs, economic development, and resilience.Green water is soil moisture in the root zone (stock)and land-based evapotranspiration (flows), bothof which directly affect rainfall downwind. Healthyforests and sustainable land management areessential for maintaining green water stocks and flowsand ensuring benefits for people and ecosystems.Low-income economies rely mostly on rainfall andtherefore suffer disproportionate impacts fromreduced green water flows. •Transboundary water governance frameworksprimarily focus on blue water (surface andgroundwater) management and need to be expandedto explicitly account for green water.A key questionfor governance regimes is how to shift from a corefocus on blue water to more integrated managementof the hydrological cycle. Existing national andinternational legal and institutional frameworksprovide a solid foundation; however, improvements