南京大学学报(自然科学版) ›› 2014, Vol. 50 ›› Issue (5): 715722.
左 平1,2*,欧志吉1,姜启吴1,刘 明3
Zuo Ping1,2, Ou Zhiji1, Jiang Qiwu1, Liu Min3
摘要: 选择了7种江苏盐城的典型滩面作为研究对象,对、不同深度的土壤微生物进行微生物群落生理功能多样性(CLPP)分析,结果表明:互花米草滩和芦苇滩的土壤微生物多样性和活性最高,而碱蓬滩最低,光滩介于二者之间;表土层微生物活性的季节波动比亚表层大;芦苇滩和互花米草滩的多样性季节变化的表层土和亚表层土的差异较小,而碱蓬滩和光滩的差异较大;在7月和10月时,互花米草滩和光滩的多样性较为接近,且群落结构无明显差异,而在1月和4月时多样性差异大,且群落结构明显不同;芦苇滩和互花米草滩的土壤微生物群落结构较为一致;引起不同滩面、不同季节、不同深度的土壤微生物群落结构差异的主要因素是由不同微生物群落对碳源的总体利用能力造成;季相变化是影响土壤微生物群落结构的最重要因子,滩面类型次之,而不同深度(040 cm)所产生的影响则较小。
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