气候变化领域集成服务门户(CCPortal): Strategic basin and delta planning increases the resilience of the Mekong Delta under future uncertainty

CCPortal

DOI	10.1073/pnas.2026127118
	Strategic basin and delta planning increases the resilience of the Mekong Delta under future uncertainty
	Schmitt R.J.P.; Giuliani M.; Bizzi S.; Kondolf G.M.; Daily G.C.; Castelletti A.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:36
英文摘要	The climate resilience of river deltas is threatened by rising sea levels, accelerated land subsidence, and reduced sediment supply from contributing river basins. Yet, these uncertain and rapidly changing threats are rarely considered in conjunction. Here we provide an integrated assessment, on basin and delta scales, to identify key planning levers for increasing the climate resilience of the Mekong Delta. We find, first, that 23 to 90% of this unusually productive delta might fall below sea level by 2100, with the large uncertainty driven mainly by future management of groundwater pumping and associated land subsidence. Second, maintaining sediment supply from the basin is crucial under all scenarios for maintaining delta land and enhancing the climate resilience of the system. We then use a bottom-up approach to identify basin development scenarios that are compatible with maintaining sediment supply at current levels. This analysis highlights, third, that strategic placement of hydropower dams will be more important for maintaining sediment supply than either projected increases in sediment yields or improved sediment management at individual dams. Our results demonstrate 1) the need for integrated planning across basin and delta scales, 2) the role of river sediment management as a nature-based solution to increase delta resilience, and 3) global benefits from strategic basin management to maintain resilient deltas, especially under uncertain and changing conditions. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Global environmental change; Mekong; Resilience; River deltas; Sediment
语种	英语
scopus关键词	ground water; Article; climate resilience; dam (barrier); environmental change; hydropower; Mekong Delta; planning; river; river basin; sediment; uncertainty
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238648
作者单位	Natural Capital Project, Stanford University, Stanford, CA 94305, United States; The Woods Institute for the Environment, Stanford University, Stanford, CA 94305, United States; Department of Electronics Information and Bioengineering, Politecnico di Milano, Milano, 20133, Italy; Department of Geosciences, University of Padova, Padova, 35122, Italy; Department of Landscape Architecture and Environmental Planning, University of California, Berkeley, CA 94720, United States; Institute of Environmental Engineering, ETH Zurich, Zurich, 8049, Switzerland
推荐引用方式 GB/T 7714	Schmitt R.J.P.,Giuliani M.,Bizzi S.,et al. Strategic basin and delta planning increases the resilience of the Mekong Delta under future uncertainty[J],2021,118(36).
APA	Schmitt R.J.P.,Giuliani M.,Bizzi S.,Kondolf G.M.,Daily G.C.,&Castelletti A..(2021).Strategic basin and delta planning increases the resilience of the Mekong Delta under future uncertainty.Proceedings of the National Academy of Sciences of the United States of America,118(36).
MLA	Schmitt R.J.P.,et al."Strategic basin and delta planning increases the resilience of the Mekong Delta under future uncertainty".Proceedings of the National Academy of Sciences of the United States of America 118.36(2021).