Present Study on Biological Soil Crusts in China

Biological soil crusts are a unique mini-nature landscape in desert district,as well as the obvious sign of fixing mobile dune.At the same time,biological soil crusts play an important role in fixing drift sand,nutrients circulation and ecological environment changes,and so on,respectively.Since 2000,the Chinese researchers began to make study on biological soil crusts from all sides,which closely combined with their majors and regions feature,and they obtained a lot of results.In this paper,we expound the study situation of biological soil crusts in China from the biological composition of biological soil crusts,structure and its development features,physicochemical properties and its enzyme active,ecological function,effects of disturbances,distribution characteristics and fixed technological of artifical inoculation algae,and so on,respectively.We hope this paper can offer some references and experiences for future study on biological soil crusts in desert district in China.