Employment of algae-based biological soil crust to control desertification for the sustainable development: A mini-review

Desertification is a global challenge threatening the sustainable development of humans. Recently, a concept of employing algae-based biological soil crust (BSC) for desertification control in arid and semi-arid zones is becoming popular. In this paper, we focused on the screening of algal strains, study of BSC formation mechanisms, and optimization of critical parameters, which are important issues for the successful application of algae-based BSCs. In addition, some cases of practical application and field survey related to the use of algae-based BSCs in arid and semi-arid zones are presented. By the end of this paper, challenges and prospects of employment of algae-based BSC for desertification control are discussed in detail. It is expected that with the deeper understanding of algae-based BSC, more research can be conducted to promote its application in desertification control for humans' sustainable development.