68 research outputs found
The measurement of wind erosion through field survey and remote sensing: a case study of the Mu Us Desert, China
Analyzing airborne environmental DNA: A comparison of extraction methods, primer type, and trap type on the ability to detect airborne eDNA from terrestrial plant communities
Perceptions of Intoxication and Impairment at Arrest among Adults Convicted of Driving under the Influence of Alcohol
Quantifying the effect of geomorphology on aeolian dust emission potential in northern China
Representation of dust sources remains a key challenge in quantifying the dust cycle and its environmental and climatic impacts. Direct measurements of dust fluxes from different landform types are useful in understanding the nature of dust emission and characterizing the dynamics of soil erodibility. In this study we used the PIâSWERLÂź instrument over a seasonal cycle to quantify the potential for PM10 (particles with diameter â€10 ÎŒm) emission from several typical landform types across the Tengger Desert and Mu Us Sandy Land, northern China. Our results indicate sparse grasslands and coppice dunes showed relatively high emission potentials, with emitted fluxes ranging from 10â1 to 101 mg mâ2 sâ1. These values were up to five times those emitted from sand dunes, and 1â2 orders of magnitude greater than the emissions from dry lake beds, stone pavements and dense grasslands. Generally, PM10 emission fluxes were seen to peak in the spring months, with significant reductions in summer and autumn (by up to 95%), and in winter (by up to 98%). Variations in soil moisture were likely a primary controlling factor responsible for this seasonality in PM10 emission. Our data provide a relative quantification of differences in dust emission potential from several key landform types. Such data allow for the evaluation of current dust source schemes proposed by prior researchers. Moreover, our data will allow improvements in properly characterizing the erodibility of dust source regions and hence refine the parameterization of dust emission in climate models
Quantifying the effect of geomorphology on aeolian dust emission potential in northern China
Low-rank coal research: Volume 3, Combustion research: Final report. [Great Plains]
Volume III, Combustion Research, contains articles on fluidized bed combustion, advanced processes for low-rank coal slurry production, low-rank coal slurry combustion, heat engine utilization of low-rank coals, and Great Plains Gasification Plant. These articles have been entered individually into EDB and ERA. (LTN
Dust activity and surface sediment characteristics of the dustiest river in southern Africa: the Kuiseb River, Central Namib
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