2Bachmaier H, Effenberger M, Gronauer A, et al. Changes in greenhouse gas balance and resource demand of biogas plants insouthern Germany after a period of three years [J]. Waste Management and Research, 2012,33(2):8-11.
3Feng Y Z, Guo Y, Yang G H, et al. Household biogas development in rural China: On policy support and othermacro sustainable condi-tions [J]. Renewable and Sustainable Energy Reviews, 2012,16:5617-5624.
4Zakrzewski M, Goesmann A, Jaenicke S, et al. Profiling of the metabolically active community from a product ion scale biogas plant by means of high-through put metatran-scriptome sequencing [J]. Biotechnol., 2012,158(4):248-258.
5Pathak H, Jain N, Bhatia A, et al. Global warming mitigation potential of biogas plants in India [J]. Environmental Monitoring and Assessment, 2009,157(1/4):407-418.
6Hofman-Bang J, Zheng D, Westermann P, et al. Molecular ecology of anaerobic reactor systems [J]. Advances in Biochemical Engineering/Bintechnology, 2003,81:151-203.
7Feligini M, Panelli S, Buffoni J N, et al. Identification ofmicrobiota present on the surface of Taleggio cheese using PCR-DGGE and RAPD-PCR [J]. Food Science, 2012,77( 11 ):609-615.
8Li S, Sun L, Wu H, et al. The intestinal microbial diversity in mud crab (Scylla paramamosain) as determined by PCR-DGGE and clone library analysis [J]. Applied Microbiology and Biotechnology, 2012,113 (6): 1341 - 1351.
9Konstantinov S R, Zhu W Y, Williams B A, et al. Effect of fermentable carbohydrates on piglet faecal bacterial communities as revealed by denaturing gradient gel electrophoresis analysis of 16S ribosomal DNA [J]. FEMS Microbiology Ecology, 2003,43(2):225-235.
10Muyzer G, Smalla K. Application of denaturing gradient gel electrophoresis (DGGE)and temperature gradient gel electrophoresis (TGGE) in microbial ecology [J]. Antonie Van Leeuwenhoek International Journal of General and Molecular Microbiology, 1998,73(1):127-141.