气候变化领域集成服务门户(CCPortal): The impact of vegetation on meandering rivers

CCPortal

DOI	10.1038/s43017-021-00249-6
	The impact of vegetation on meandering rivers
	Ielpi, Alessandro; Lapotre, Mathieu G. A.; Gibling, Martin R.; Boyce, C. Kevin
发表日期	2022
EISSN	2662-138X
起始页码	165
结束页码	178
卷号	3 期号:3
英文摘要	The relationships between the evolution of land plants, meandering-river dynamics and global biogeochemical fluxes remain poorly understood. This Review explores the relationships between vegetation and the stability and dynamics of meandering rivers and will serve anthropogenic stressors on Earth's rivers. The Palaeozoic evolution of land plants revolutionized river geomorphology. However, the relationships between biotic forcing and channel dynamics are still debated and, as such, the impacts of anthropogenic stressors such as climate change, reduced biodiversity and aridification on modern meandering rivers and their biogeochemical fluxes remain poorly understood. In this Review, we propose a unifying framework based on field and modelling data that describes the stability and dynamics of meandering rivers in both the presence and the absence of land plants. Based on evidence from the pre-vegetation rock record and from modern systems, we emphasize that meandering streams can indeed arise in the absence of land plants. However, plant evolution provided widespread settings suitable for stable meandering systems through retention of floodplain mud, sediment baffling and mechanical strengthening of channel banks. Altogether, these processes slowed the characteristic rates of meander growth and floodplain-soil reworking by up to an order of magnitude. Continued anthropogenic removal of riparian and watershed vegetation due to increased urbanization, deforestation, aridification and pollution could revert streams to pre-vegetation functioning, thereby increasing their channel and sediment mobility. Future research can use this framework to constrain the pace of ancient landscape processes on Earth and Mars, in addition to modern terrestrial rivers impacted by humans.
语种	英语
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary
WOS类目	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000746759600001
来源期刊	NATURE REVIEWS EARTH & ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/281060
作者单位	Laurentian University; Laurentian University; Stanford University; Dalhousie University
推荐引用方式 GB/T 7714	Ielpi, Alessandro,Lapotre, Mathieu G. A.,Gibling, Martin R.,et al. The impact of vegetation on meandering rivers[J],2022,3(3).
APA	Ielpi, Alessandro,Lapotre, Mathieu G. A.,Gibling, Martin R.,&Boyce, C. Kevin.(2022).The impact of vegetation on meandering rivers.NATURE REVIEWS EARTH & ENVIRONMENT,3(3).
MLA	Ielpi, Alessandro,et al."The impact of vegetation on meandering rivers".NATURE REVIEWS EARTH & ENVIRONMENT 3.3(2022).