دانلود رایگان مقاله لاتین محیط مکانیکی بیابان زایی از سایت الزویر
عنوان فارسی مقاله:
صحرای Soilization : یک راه حل سازگار با محیط مکانیکی برای بیابان زایی
عنوان انگلیسی مقاله:
Desert “Soilization”: An Eco-Mechanical Solution to Desertification
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
To verify the feasibility of desert “soilization,” in April 2016, we started a large-scale planting experiment in “soilized” sand in the Ulan Buh Desert, the Inner Mongolia Autonomous Region, China. Covering an area of approximately 10 000 km2 , the Ulan Buh Desert is located at approximately 1100 m above sea level. This desert is characterized by little rainfall, with an average annual precipitation of only 102.9 mm, and severe wind erosion. It is one of the most severely desertified regions in China and one of those that are most difficult to control. Our experimental field is located at 39°36′32″N, 106°39′02″E in the Ulan Buh Desert with the altitude of 1110 m above the sea level (Fig. 2). Because the underground water resources in Ulan Buh Desert are quite abundant (the reserve volume is approximately 5.7 × 109 m3 ), all of the water used to convert the sand into “soil” and for the irrigation of the plants growing in it is sourced from underground water. In the experiment, the content of added constraining material, such as modified CMC, in the sand is between 0.1% and 0.4%. The desert sand and the constraining material were first mixed using a mixer and then paved onto the desert surface with an average thickness of 10 cm (Fig. 2(a)). A nitrogen-phosphorus-potassium compound fertilizer was also added at a weight ratio of 0.3% with respect to the sand. The “soilized” sand possesses a strong water retention capability (Fig. 2(b)). A spray atomization irrigation system was used in the experiment (Fig. 2(c)). In an attempt at largescale mechanized preparation, we even used a rotary cultivator to mix the “soilized” sand and apply it over an area of 2000 m2 , and the results suggest that such a mechanized preparation approach is feasible for large-scale desert “soilization” (Fig. 2(d)). Approximately 50 different plant seeds or seedlings, including Festuca arundinacea, coreopsis, wheat, corn, sunflower, sand jujube tree, and poplar tree, were sowed in the experimental field (Fig. 2(e)) beginning on May 20th, 2016. At present, more than 70 kinds of plants (over 20 of which may have been introduced by wind or birds) are growing healthily and robustly in the field (Fig. 3(a)–(e)),
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کلمات کلیدی:
Desert "Soilization": An Eco-Mechanical Solution to Desertification ... news.alumni.net/.../Desert-Soilization-An-Eco-Mechanical-Solution-to-Desertification http://engineering.org.cn/EN/10.1016/J.ENG ... Washington, DC: World Resources Institute; 2005. 3 Mainguet M. Desertification: natural background and human ... E13 - Soil arrangement technologies to fight against desertification ... www.wikiwater.fr › Facilitating access to water › Collecting There is no standard technical solution to control desertification : Every place ... The first stage in the process is to build linear mechanical obstacles (barriers, ... Combating Desertification in Asia, Africa and the Middle East: ... https://books.google.com/books?isbn=9400766521 G. Ali Heshmati, Victor R. Squires - 2013 - Science ... species are planted immediately after the shifting sand is fixed so that permanent solutions can be attained. Keywords Desertification • Mechanical measures ... [PDF]A Solution to Desertification - Overseas Development Institute https://www.odi.org/resources/docs/5343.pdf by A Savory - 1989 - Cited by 10 - Related articles A SOLUTION TO DESERTIFICATION: HOLISTIC RESOURCE MANAGEMENT1 by. Allan Savory. Founding Director. Center for Holistic Resource Management. Talk to focus on desertification problems, solutions in New Mexico ... engineering.unm.edu › Home › News › 2016 › October Oct 26, 2016 - Talk to focus on desertification problems, solutions in New Mexico ... Water and the Environment, the Department of Mechanical Engineering, ... Ad Solution Desertification - Save the World with a Shovel Adwww.justdiggit.org/Desertification Stop Desertification & Donate Now! Unique Recovery Approach · Worldwide Greenification · Return of Vegetation BlogsContact usCampaignsHydrologic CorridorAbout UsApproach
