气候变化领域集成服务门户(CCPortal): Global extent of rivers and streams

CCPortal

DOI	10.1126/science.aat063
	Global extent of rivers and streams
	Allen G.H.; Pavelsky T.
发表日期	2018
ISSN	0036-8075
起始页码	585
结束页码	588
卷号	361 期号:6402
英文摘要	The turbulent surfaces of rivers and streams are natural hotspots of biogeochemical exchange with the atmosphere. At the global scale, the total river-atmosphere flux of trace gasses such as carbon dioxide depends on the proportion of Earth’s surface that is covered by the fluvial network, yet the total surface area of rivers and streams is poorly constrained. We used a global database of planform river hydromorphology and a statistical approach to show that global river and stream surface area at mean annual discharge is 773,000 ± 79,000 square kilometers (0.58 ± 0.06%) of Earth’s nonglaciated land surface, an area 44 ± 15% larger than previous spatial estimates. We found that rivers and streams likely play a greater role in controlling land-atmosphere fluxes than is currently represented in global carbon budgets. 2017 © The Authors.
英文关键词	carbon dioxide; air-water interaction; biogeochemical cycle; carbon budget; carbon dioxide; flux measurement; global perspective; river discharge; river system; stream; trace gas; Article; astronomy; atmosphere; biogeochemistry; environmental aspects and related phenomena; glaciation; grass; human; priority journal; river ecosystem; stream (river); surface area; turbulent flow
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/242801
作者单位	Department of Geological Sciences, University of North Carolina, Chapel Hill, NC, United States; Department of Geography, Texas A and M University, College StationTX, United States
推荐引用方式 GB/T 7714	Allen G.H.,Pavelsky T.. Global extent of rivers and streams[J],2018,361(6402).
APA	Allen G.H.,&Pavelsky T..(2018).Global extent of rivers and streams.Science,361(6402).
MLA	Allen G.H.,et al."Global extent of rivers and streams".Science 361.6402(2018).