Microorganism Characteristics in Decomposition Process of Rubber Tree Leaves Litter in Hainan Island

• 作者: Guan Limin Jin Long Lai Huaying Wu Zhixiang Yang Chuan
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: RUBBER TREE MICROORGANISM LITTER Different ENVIRONMENT China
• 年，卷（期）: 2016,（6）
• 页码范围: 22-28
• 页数: 7页
• 分类号: P

摘要

Microorganism plays an irreplaceable role in litter decomposition, and the dynamics of microbial activity in litter is of ecological significance in understanding the mechanism of litter decomposition. Therefore, the dynamic characteristics of microorganism in rubber litter decomposition were studied during 300 and 240 days by mesh bag method under different control measures in plantations. And the results were as following ：(1) Microbial populations were closely related to litter residues and decomposition environments. The microbial population has been rising firstly and then falling on the ground but directly dropping under the ground by time. (2) Microbial populations under different environments as follows： 0.07mm aperture of mesh bag > 1 mm aperture of mesh bag, non-fertile hole > fertile hole, underground group > ground group. During the entire process of decomposition, the quantity of bacteria holed absolute superiority, then actinomycetes, finally fungi. (3) Through the correlation analysis,the total number of bacteria, fungi and microorganism in aboveground group was significantly associated with the decomposition rate, but there was little correlation to actinomycetes. Ifs suggested that fungi and bacteria are the main participants in litter decomposition on the ground. In underground group, the microbial groups were significantly or extremely significantly related to the dry weight of residues, but was not correlated to decomposition rate significantly, which suggested that litter provided food for underground microbes, and litter decomposition was more dependent on comprehensive effect of microbes, soil animals and soil environments.