• (5) biochar induces changes in enzyme activities that affect soil elemental cycles related to microbes (Lehmann et al., • 2011; Yang et al., 2016b); • (6) biochar interrupts microbial intra- and inter-specific communication between microbial cells via a combination of sorption and the hydrolysis of signaling molecules (Gao • et al., 2016; Masiello et al., 2013); it should be noted that biochar may contain some molecules that can work as signals for microbial communication; • (7) biochar enhances the sorption and degradation of soil contaminants and reduces their bioavailability and toxicity to microbes (Beesley et al., 2010; Qin et al., 2013; • Stefaniuk and Oleszczuk, 2016).
• New developments in the meta• genomics analysis of soil microbe genes will no doubt be pivotal to • uncovering the hidden dimensions of biochar-microbe interactions • that link biochar properties with microbial functions. Under• standing the mechanisms of the interaction between biochar and • soil microbes is essential to revealing the mechanisms of the het• erogeneous effects of biochar on soi物炭基功能性菌肥的使用可以提 高食品安全
• (1) biochar provides shelter for soil microbes with pore structures and surfaces (Quilliam et al., 2013a); • (2) biochar supplies nutrients to soil microbes for their growth with those nutrients and ions adsorbed on • biochar particles (Joseph et al., 2013); • (3) biochar triggers potential toxicity with VOCs and environmentaly persistent free radicals (Fang et al., 2014a); • (4) biochar modifies microbial habitats by improving soil properties that are essential for microbial growth • (including aeration conditions, water content, and pH) (Quilliam et al., 2013a);
热解温度要作为实验的设计变量， 来考察对菌的生长特性的影响
• • • • • • • • • To enhance carbon sequestration, high temperature biochar, especially fromwoods, should be considered because they generally have stable carbon structure and high C/N ratio that make them recalcitrant to microbial decomposition. To control soilborne pathogens, low temperature biochars may have the advantages, because the relatively high small molecular VOCs on such biochar can be microbial inhibitors. Moreover, moderate temperature biochar with relatively higher adsorption capacity and electron transfercapabilitycan be considered for the purposeof soil contamination remediation.