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YX Yunhu Xie
XD Xiaohong Dang
YZ Yujuan Zhou
ZH Zhihui Hou
XL Xiaojia Li
HJ Hongtao Jiang
DZ Dandan Zhou
JW Ji Wang
CH Chunxing Hai
RZ Ruiping Zhou
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The sand barrier materials used in this study included wheat straw and Poly Lactic Acid (PLA; a bioplastic product) tubing (Fig. 2). Sections of wheat straw extends about 75 cm in length. These have the advantages of being low cost, having simple installation and being made of natural materials. The straw was implanted by shovel within the surface of the sand dunes following a gridded barrier pattern. Both sides of the straw are fixed with sand (Fig. 3). PLA is a light bioplastic that biodegrades without leaving harmful residuals in the environment. PLA tubing can reach 500 m and can be filled to 10 cm diameter with local sand. This material can be installed in a gridded pattern established and optimized by previous studies (Fig. 4).

Sand barrier materials including wheat straw (left) and PLA tubing (right).

Installation of straw barrier with 1 m and 1.5 m grid dimensions.

Bare sand dunes (upper left) and three types of mechanical sand barrier: mixed barrier (upper right), straw checkerboard barrier (lower left) and PLA checkerboard barrier (lower right).

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