Global Frameworks for Aeolian Geomorphology

Warren, A.

doi:10.1002/9781118945650.ch1

Cited by 2 publications

(2 citation statements)

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“…The upper and lower thresholds represent the values of NDVI veg and NDVI soil in the image, respectively. Here, dune morphology is the classification of mobility on surface material of hill under wind force, which is divided into bare (mobile) and vegetation cover (fixed, semi-fixed) according to fixing extent of dune [ 56 ]. According to the Technical Code of Practice on the Sandified Land Monitoring (GB/T 24255–2009) and Wu [ 56 ], the sandified land is divided into three categories: mobile dune (0< FVC <10%), semi-fixed dune (10%≤ FVC <30%), and fixed dune ( FVC ≥30%).…”

Section: Methodsmentioning

confidence: 99%

Research on the sustainability of "greening" process in the Mu Us Sandy Land based on the spatiotemporal stability of ecological land

Zhang,

Jia,

et al. 2024

PLoS ONE

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In environmentally sensitive areas, especially the arid and semi-arid regions, the greening stability process and its influencing factors can directly affect the sustainable development of the ecological environment. In this study, multi-source remote sensing data such as land use/cover data, MODIS NDVI, and soil moisture, methods such as stability index, vegetation quantitative remote sensing, and Geodetector were employed to analyze the sustainability of the greening process in the Mu Us Sandy in 2000–2020, which were viewed from three aspects: changes in stability of land use types and function, soil moisture change and influencing factors on greening stability. The results showed that, (1) From the stability of land use types, continuous stable ecological land accounted for more than 50%, showing that decreased from northwest toward southeast. (2) From the functional stability, NDVI showed a fluctuated growth (0.035/a), with an increasing distribution pattern from northwest to southeast. Additionally, Vegetation changes were unstable and concentrated in the western part of the study area (OtogBanner and Otog Front Banner), while the eastern part was stable, in which vegetation improvement took the main position. Moreover, mobile dunes almost disappeared, and semi-fixed dunes decreased and gradually shrank to the west of the sandy area, while fixed dunes soared and were concentrated in the middle of the sandy land. (3) From the soil moisture change, soil moisture at different underground depths showed an overall increasing trend, but the deep soil moisture was higher than the shallow, and spatial distribution varied greatly. (4) From the influencing factors, natural factors significantly influence greening stability, among which precipitation had a particularly profound impact, and interactions with other natural and social factors were higher explanatory. The paper aims to explore whether the ecological environment is developing in a good and orderly direction in the Mu Us Sandy Land, and the potential factors that cause its changes, to provide a theoretical basis for scientific governance in the Mu Us Sandy Land and other arid and semi-arid areas in the future.

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Section: Methodsmentioning

confidence: 99%

Research on the sustainability of "greening" process in the Mu Us Sandy Land based on the spatiotemporal stability of ecological land

Zhang,

Jia,

et al. 2024

PLoS ONE

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“…There are two clear sets of processes by which aeolian dunes are thought to be established (Courrech du Pont, 2015; Courrech du Pont et al., 2014). The first is associated with the hydrodynamic instability of an erodible granular flat bed with unlimited sand availability (Andreotti et al., 2002a; Charru et al., 2013; Claudin et al., 2013; Warren, 1979). This instability results from the combination of the response of wind stress to the modulated topographic profile, and the response of sand transport to the spatial variation in that wind stress (Charru et al., 2013).…”

Section: Introductionmentioning

confidence: 99%