Experimental research on sand intercepting process of shrub vegetation in Arakan area

With the purpose of conducting some preliminary research on sand intercepting process of shrub vegetation, field experiment was conducted in Arakan area, by using 4 multi-stepped and standard sand traps, under given conditions of atmosphere (dryness, temperature etc.) and vegetation (density, coverage, height etc.) on May 19-22, 2010. Results show that, vertically, optimal fitting results of the sand amount with height H is power function to number 1 sand trap with the fitting degree of 98.75%; fitting degrees of quadratic curve functions are highest to sand traps 2 and 3, which are 96.77% and 99.66%, respectively; as far as sand trap 4 is concerned, the exponential function, quadratic curve function and stepwise regression fitting function share the same fitting degree which reaches up to 94.41%. Horizontally, the fitting curve of quadratic function optimizes among all 4 different functions and the fitting degree is high up to 99.67%. With regard to the values of wind velocity differences, on the whole, the changes of the values of wind velocity differences present a characteristic of an irregular single waveform pattern. All of the above-mentioned results acquired in this field experiment may provide some practical reference to related research on desertification and the prevention of wind and fixation of sand.