Microbial ecology had been witnessed to undergo a virtual revolution with the development of molecular and biochemical techniques for directly detecting the structure and function of soil microbial communities independent of isolation and culturing of microorganisms, DNA-based molecular techniques can determine microbial genetic diversity, biochemical methods can help assess microbial community structure on the basis of the cell component of biological membranes, such as phospholipids fatty acids (PLFAs) [12], [13], [33] and [34]. However, these methods are very complex and cannot be extensively applied to large numbers of soil samples. A relatively simple method that characterizes potential microbial community functions is the generation of community-level physiological profiles (CLPP). Garland and Mills [14] and [15] proposed that the sole-carbon-source utilization as a community-level physiological approach could be used as a functional method for studying heterotrophic microbial communities. Although this method is simple and applicable in large-scale field studies [7], it also has a number of limits, as it does not truly reflect functional diversity in situ [9].