Results 31 to 40 of about 5,356 (162)

Perspectives on conservation grazing: The need for monitoring and communication

open access: yesEcological Solutions and Evidence
Conservation grazing is widely used to manage open ecosystems, but inconsistent definitions and inadequate reporting of grazing patterns hinder effective communication among researchers, practitioners and policymakers, limiting the understanding and ...
Jonathan Millett   +9 more
doaj   +1 more source

Minimal Model for Sand Dunes [PDF]

open access: yesPhysical Review Letters, 2002
We propose a minimal model for aeolian sand dunes. It combines an analytical description of the turbulent wind velocity field above the dune with a continuum saltation model that allows for saturation transients in the sand flux. The model provides a qualitative understanding of important features of real dunes, such as their longitudinal shape and ...
Kroy, Klaus   +2 more
openaire   +3 more sources

Aeolian Geomorphology of Ergs and Dunefields in Iran. [PDF]

open access: yesDesert
Iran's geographical location causes the majority of the country to be semi-arid, arid, or hyper-arid. The existence of ergs and dunefields in the central and eastern parts of Iran has caused residential areas and all kinds of land use to be affected by ...
Mehran Maghsoodi, Hamid Ganjaeian
doaj   +1 more source

Sand-Dunes [PDF]

open access: yesThe Geographical Journal, 1897
n ...
openaire   +2 more sources

Effects of Sand Dune Stabilization on the Spatial Pattern of Artemisia ordosica Population in Mu Us Desert, Northwest China. [PDF]

open access: yesPLoS ONE, 2015
Vegetation patterns are strongly influenced by sand mobility in desert ecosystems. However, little is known about the spatial patterns of Artemisia ordosica, a dominant shrub in the Mu Us desert of Northwest China, in relation to sand fixation.
Jiachen Zhang   +8 more
doaj   +1 more source

Contribution of Lake-Dune Patterning to the Dune Height of Mega-Dunes in the Badain Jaran Sand Sea, Northern China

open access: yesRemote Sensing, 2021
Mega-dunes in the lake group area of the Badain Jaran Sand Sea, China, are generally taller than dunes in the non-lake group area. This spatial distribution of dune heights may provide a new perspective on the controversy regarding the dunes’ formation ...
Zhenmin Niu   +9 more
doaj   +1 more source

Continuum saltation model for sand dunes [PDF]

open access: yesPhysical Review E, 2001
11 pages, 7 ...
Sauermann, G., Kroy, K., Herrmann, H. J.
openaire   +3 more sources

Application of Aeolian Sediments Granulometry Characteristics to Determine the Morphology of Homogenous Sand Dunes through Multivariate Data Analysis (Case Study: Kashan Erg) [PDF]

open access: yesمدیریت بیابان, 2013
Kashan Erg is one of the most important sand seacomplexes in Iran. The Current research tried to determine the homogeneity of Kashan Erg through multivariate data analysis.
Asghar Tavakkoli Fard   +3 more
doaj   +1 more source

On the non-linear evolution of sand dunes [PDF]

open access: yesGeophysical Journal International, 1981
Adopting a multiple scale method, the non-linear evolution of fully developed dunes of non-cohesive sand is studied using Kennedy’s model. It is shown that both the twoand three-dimensional problems are, in general, governed by three coupled second-order partial differential equations. However, for boundary conditions appropriate to localized solutions
Eltayeb, I. A., Hassan, M. H. A.
openaire   +2 more sources

Measuring Sand Dune Dynamics in the Badain Jaran Desert, China, Using Multitemporal Landsat Imagery

open access: yesRemote Sensing, 2022
The Badain Jaran Desert (BJD) and surrounding deserts are the main sources of sand and dust storms in Asia. However, for complex factors, the descriptions of the sand dune dynamics in the BJD and investigations on the contribution of the BJD to the ...
Yusen Dong   +2 more
doaj   +1 more source

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