Ali Mohammad Ghaeminia
Abstract
One of the natural landscapes observed in arid and desert areas is the accumulation of loose sand in and around plants, which over time causes the formation of sand masses. In Arabic, this type of land is called “نَبکَة: /næbkæ/”, which means small hill and ridge. The word ...
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One of the natural landscapes observed in arid and desert areas is the accumulation of loose sand in and around plants, which over time causes the formation of sand masses. In Arabic, this type of land is called “نَبکَة: /næbkæ/”, which means small hill and ridge. The word has been translated from Arabic into English as well as Persian, and in most scientific texts in these two languages, the word “nebkha” and “نبکا /nebkɑ/” are used to express this form of land, respectively. Studying the scientific texts, it was found that there are other writing methods such as nabkha, nebka, nabka and nabkhah for this word, which with the images used to show this phenomenon, indicates that all the authors meant nebkha. These differences in spelling prevent researchers from accessing most of the research done on this phenomenon. In addition, terms such as coppice dune and phytogenic hillock are found in the equivalent of nebkha in the literature. In this short article, the use of the word nebkha in the texts as one of the landform of deserts has been studied. The results showed that in order to obtain more comprehensive information when studying this phenomenon from different aspects such as geomorphology and ecology, it is necessary to search for different writing methods and equivalent words.
Ali Mohammad Ghaeminia; Mohammadali Hakimzadeh Ardakani
Abstract
With regards to the wind erosion phenomenon importance, it is vital to quick identification of areas that are sensitive to dust removal and wind erosion processes. In this research, a lightweight and efficient device is designed, fabricated and evaluated in order to create conditions for applying constant ...
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With regards to the wind erosion phenomenon importance, it is vital to quick identification of areas that are sensitive to dust removal and wind erosion processes. In this research, a lightweight and efficient device is designed, fabricated and evaluated in order to create conditions for applying constant wind stress on soil particle surfaces and measuring erosive particles. The production of wind power by a blower and measuring the amount of loose and unstable particles that were harvested in the reservoir with the highest efficiency were the principles of designing the device. The prototype of the device was designed using components and parts, and the device was evaluated in the field. The device is usable by a user in the field without the need for a power generator and the weight of the particles collected in the tank indicates the relative erodibility of the test site to the wind. Using the air filter bag (tank), it was possible to achieve a minimum loss of fine particulate matter and has been reduced the measure of less than the actual amount of land erosion. The result of the comparison of the sensitivity of soil sensitivity to erosion by the device in desert lands of northern Yazd-Ardakan Plain with the height of winding of the soil with the installation of the index showed that this device has good capability (R2= 0.57) in the rapid detection of areas susceptible to wind and without measuring physical and chemical properties of the soil, there is an early identification of wind erosion-sensitive land. This device does not actually simulate the natural processes of wind erosion created by the particle saltation, but using it, a new index can be obtained for assessing soil erodibility and subsequently identified the location of dust emissions.
