广西岑溪县七坪林区土壤微生物生态分布及生化活性的研究

广西气候温和,雨量充沛,亚热带和热带森林资源十分丰富。为了合理利用和开发广西梧州、玉林等地区南亚热带的土地资源和充分发挥该地区森林资源的经济效益,1987年我们

Ecological Distribution and Biochemical Activity of Soil Microorganisms in Qiping Forest Region of Cenxi County, Guangxi Province.

Th ecological distribution and biochemical activity of soil microorganisms have notable differences under six forest types: 1. the total number of soil microbes and that of bacteria and actinomycetes are greatest under evergreen broadleaved forest,then under broadleavedconiferous and homana mixed forest, and least under masson-pine forest, but the number of soil fungi under Chinese fir and masson pine forests is greater than that under Illicium verum and homana forests. 2. the species, groups and genera of bacillus, streptomyces and fungi are more abuncant under broadleaved and coniferous mixed forest and evergreen broadleaved forent than those under mascon pine and Chinese fir forests. 3. the activities of soil microbes and roil enzymes and the soil respiration rate are higher under evergreen broadleaved forest and broadleaved-coniferous mixed forest, and lower under Chinese-fir and masson-pine forests. These results indicate the quick transformation of organic matter, intense biological metabolism and higher fertility and productivity of soils under evergreen broadleaved forest and broadleaved-coniferous mixed forest.