Results 1 to 10 of about 377,749 (305)

Shallow water habitat management influences soil CO2 efflux from agricultural fields in the Lower Mississippi River Basin (LMRB), USA

open access: yesAgrosystems, Geosciences & Environment, 2023
Temporary winter flooding is a common practice for enhancing wildlife habitat in the Lower Mississippi River Basin (LMRB) and other migratory waterfowl flyways in North America. This practice also facilitates nutrient retention and reuse of rainwater‐ or
Amitava Chatterjee   +4 more
doaj   +1 more source

Riverbed evolution characteristics in the Hechangzhou braided reach under new flow-sediment conditions and waterway regulations

open access: yesShuili Shuiyun Gongcheng Xuebao, 2021
The Hechangzhou river reach is a typical braided reach and one of the most violently changed reaches in the lower reaches of the Yangtze River. After the impoundment of Three Gorges Dam, the sediment outflow decreased greatly, the new features of river ...
FAN Hongxia, WANG Jianzhong, ZHU Lijun
doaj   +1 more source

Erosion depth of sand from an immobile gravel bed [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2015
This study was conducted to improve prediction of the depth of erosion of sand (D50 = 0.3–0.9 mm) from immobile gravel (D50 = 36.1 mm) under steady uniform flows with bed shear stresses from 0.1 to 0.9 of that required to entrain the gravel.
R. Kuhnle, D. Wren, E. Langendoen
doaj   +1 more source

Evaluating sediment transport capacity relationships for use in ephemeral gully erosion models [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2015
On cropland, ephemeral gully erosion in the USA may contribute up to 40% of the sediment delivered to the edge of the field. Well-tested, physically- and process-based tools for field and watershed scale prediction of gully erosion are lacking due to the
E. J. Langendoen   +4 more
doaj   +1 more source

Theoretical analysis and experimental study of new structural curtain-stone in pit pools

open access: yesShuili Shuiyun Gongcheng Xuebao, 2021
In the Jiangsu reach of the Yangtze River, one of the most common silting-promoting structures in the cave collapses is tree top-stone. As cutting trees has negative impact on greening and ecology, a kind of curtain-stone composed of floating block ...
YING Qiang   +3 more
doaj   +1 more source

Assessment of cotton and sorghum stand establishment using UAV‐based multispectral and DSLR‐based RGB imagery

open access: yesAgrosystems, Geosciences & Environment, 2022
Plant density and canopy cover are key agronomic traits for cotton (Gossypium hirsutum L.) and sorghum [Sorghum bicolor (L.) Moench] phenotypic evaluation.
Madhav Dhakal   +7 more
doaj   +1 more source

Effects of agricultural conservation practices on oxbow lake watersheds in the Mississippi River alluvial plain

open access: yesSoil and Water Research, 2013
Agricultural lands are considered to be a major source of nonpoint source pollutants such as sediment, pesticides and nutrients in the United States.
Scott Stephen KNIGHT   +2 more
doaj   +1 more source

Trends in Land Use, Irrigation, and Streamflow Alteration in the Mississippi River Alluvial Plain

open access: yesFrontiers in Environmental Science, 2020
The Mississippi River Alluvial Plain is a critical region for agricultural production in the United States, providing the majority of the nation's rice, catfish, and cotton.
Lindsey M. W. Yasarer   +3 more
doaj   +1 more source

Rehabilitation of an Incised Stream Using Plant Materials: the Dominance of Geomorphic Processes

open access: yesEcology and Society, 2008
The restoration of potentially species-rich stream ecosystems in physically unstable environments is challenging, and few attempts have been evaluated scientifically.
F. Douglas. Shields, Jr.   +4 more
doaj   +1 more source

Stability analysis of riverbanks with a dual structure under water–root–soil coupling

open access: yesWater Science and Technology, 2023
The collapse mechanism of dual-structure vegetation riverbanks at different water levels is unclear. A method for calculating the critical collapse width of a dual-structure vegetation bank under different failure modes that consider the variations in ...
Youzhi Hao   +8 more
doaj   +1 more source

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