[1]DANG Xiao-hong,YU Yi,GAO Yong,et al.Analysis on Impact of PLA Barrier on Soil Particle sizes of Sand Dunes[J].Research of Soil and Water Conservation,2014,21(03):16-19,24.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 03
Page number:
16-19,24
Column:
Public date:
2014-06-28
- Title:
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Analysis on Impact of PLA Barrier on Soil Particle sizes of Sand Dunes
- Author(s):
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DANG Xiao-hong1, YU Yi2, GAO Yong1, YUAN Li-min1, MA Ying-bin3, GAO Jun-liang3, WANG Shan1, ZHANG Xi-wei1
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1. College of Ecology and Environmental Science, Inner Mongolia Agricultural University, Hohhot, 010019, China;
2. International Center for Bamboo and Rattan, Beijing 100102, China;
3. Desert Forestry Experimental Center, Chinese Academy of Forestry, Dengkou, Inner Mongolia 015200, China
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- Keywords:
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PLA; ballast sand barrier; layout specifications; soil particle size
- CLC:
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S152.3
- DOI:
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- Abstract:
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Biodegradable PLA fiber is a new type of fixing material. The tubular shapes of sandbags made of PLA are filling with sands, and are piled up on the sand dunes, which can effectively change the near-surface wind flow structure and roughness. Based on the impact to surface wind speed, PLA sandbag barriers can also impact the redistribution of soil particle sizes on the surface dunes. Through the measure of soil particle sizes in 0—11 cm in different specification sand barriers, this article discussed the impact of different specifications and different slope positions to soil particle sizes. The results showed that: specifications (2 m×2 m) of laid sand barrier has the greater impact on soil particle size, and soil particle sizes on average are 16% bigger than that of sand dunes without laid sand barriers. Instead, specification (1 m×1 m) showed minimum impact. Soil particle size in the same specification showed the most obvious change on the top position. They are 21% bigger than those of sand dunes without laid sand barriers. The soil particle sizes on windward slope of the leeward slope were 3.9% and 2.4% larger compared to the control; soil particle size changes with the different soil depth. Soil particle size of 0—1 cm depth changes most obviously, which is 16% bigger than that of sand dunes without sand barriers. Therefore, It can be seen that the sand particle size of dunes surface increases after the laying of sand barrier.