生态环境学报2017，Vol.26Issue(8)：1292-1300,9.DOI:10.16258/j.cnki.1674-5906.2017.08.003
不同红树植物类群土壤微生物功能多样性的研究
Study on Functional Diversity of Soil Microorganism in Different Mangrove Plants Based on Biolog-ECO Technology
摘要
Abstract
As the mainly ocean wetland plant, mangrove plants play an important role in intertidal zone between the land and ocean. In order to reveal the internal structure and function of mangrove wetland ecosystem, functional diversity of soil microorganism in different mangrove plants had been explored, which toke an important part in vegetation-soil system. Research had been studied by Biolog-ECO technology on the soil microorganism of 11 species of true mangrove plants and 4 species of semi-mangrove plants in the Tielu Habor, SanYa, Hainan, China. The results showed that the soil microbial average absorbance (AWCD) curves in the soil microorganism of all tested mangrove plants almost had the same tendency. However, the total carbon source utilization ability was different among the mangrove species: for the true mangrove plants, the highest and the lowest specie were Laguncularia racemose and Bruguiera sexangula var. rhynchopetal, as the values of AWCD in 96 h were 0.93 and 0.48 separately; for the semi-mangrove plants, the highest specie was Pluchea indica with 1.27, and the lowest plants was Hibiscus tiliaceus with 0.68. For the Shananon index (H'), Simpson index (D) and Pielou index (E), there were no-significant differences in the soil microorganism of most tested mangrove plants. Obviously, the soil microorganism in most mangrove plants had high utilization ability with amino acids and polymers of carbon kinds. Based on the principal component analysis (PCA), PC1 and PC2 in the soil microorganism of true mangrove were 60.625％ and 17.356％, for the semi-mangrove plants were 67.378％ and 21.535％. Carbohydrates and amino acids were the main contribution carbon sources for PC1 and PC2. All the results indicated that soil microorganism of most mangroves had the same community structure and diversity, but the utilization and bias in carbon source of soil microorganism showed difference, as the reason might likely dued to the effection of mangrove species, root exudates and environmental pollution.关键词
红树林植物/土壤微生物/Biolog-ECOKey words
mangrove/soil microorganism/Biolog-ECO分类
农业科技引用本文复制引用
金映虹,吴红萍,谭方正,张颖..不同红树植物类群土壤微生物功能多样性的研究[J].生态环境学报,2017,26(8):1292-1300,9.基金项目
国家自然科学基金项目(31360173) （31360173）
海南自然科学基金面上项目(417103) （417103）
