1. General Analysis Methods of Soil Agriculture Chemistry;Agriculture Chemistry Specialty Council Soil Science Society of China,1983
2. Surface disturbance of cryptobiotic soil crusts: nitrogenase activity, chlorophylla content, and chlorophyll degradation;Belnap;Arid Soil Res. Rehab.,1994
3. Biological Soil Crusts: Structure, Function and Management;Belnap,2001
4. Long-term soil nitrogen and vegetation change on sandhill rangeland;Berg;J. Range Manage.,1997
5. Design principles for ecological engineering;Bergen;Ecol. Eng.,2001