Wind erosion of aeolian sandy soil can cause serious land degradation and other environmental problems, and thus its prevention and control is very important. However, there has not been a very effective way to prevent this severe wind erosion until now, and traditional measures such as mechanical methods, chemical sand‐fixing methods, and agronomic methods also have many disadvantages. The main objective of this study is to evaluate feasibility of microbially induced calcite precipitation (MICP) as a novel soil‐strengthening technique, to cement aeolian sandy soil, and reduce wind erosion risk. For this purpose, aeolian sandy soil was cemented with Sporosarcina pasteurii through MICP technique, and the physical and mechanical properties and wind erosion resistance of cemented aeolian sandy soil were tested. The results show that wind erosion resistance of aeolian sandy soil can be effectively improved by spraying S. pasteurii solution and cementing solution (equal concentration of urea and calcium chloride mixture) into it from the surface, and the cemented aeolian sandy soil had good wind erosion resistance. Finally, morphology of precipitated CaCO₃ crystals was studied using scanning electron microscope, optical microscope, and X‐ray diffraction. The calcium carbonate crystals produced in aeolian sandy soil were calcite, and the calcium carbonate crystals had polyhedral, spherical, or flower clusters crystal morphology. The results of this study demonstrate an effective way to use MICP technology to cement aeolian sandy soil and prevent wind erosion, and provide a new way for wind erosion prevention.

中文翻译：

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微生物诱导的碳酸钙沉淀增加风沙土的抗风蚀性

风沙土的风蚀会导致严重的土地退化和其他环境问题，因此其预防和控制非常重要。但是，到目前为止，还没有一种非常有效的方法来防止这种严重的风蚀，传统的措施，例如机械方法，化学固沙方法和农艺方法也有许多缺点。这项研究的主要目的是评估微生物诱导的方解石沉淀（MICP）作为一种新的土壤强化技术，胶结风沙土并降低风蚀风险的可行性。为此，在风沙土上用Sporosarcina pasteurii进行胶结。通过MICP技术，测试了胶结的风沙土的物理机械性能和抗风蚀性。结果表明，从表层喷洒巴氏葡萄球菌溶液和胶结溶液（尿素和氯化钙等浓度的溶液）可以有效改善风沙土的抗风蚀性，胶结的风沙土具有良好的风蚀性。反抗。最后，析出的CaCO _3的形态使用扫描电子显微镜，光学显微镜和X射线衍射研究了晶体。在风沙质土壤中产生的碳酸钙晶体为方解石，并且碳酸钙晶体具有多面体，球形或花簇晶体形态。这项研究的结果证明了使用MICP技术固结风沙质土壤和预防风蚀的有效方法，并为预防风蚀提供了一种新的方法。