摘要
调查了南岭小坑森林公园4种典型林型针阔混交林、常绿阔叶林、杉木林、毛竹林,并在不同林型采集土壤样本,分析该地区4种不同林型土壤微生物的种群分布情况.结果表明:(1)不同林型土壤微生物数量存在极显著差异(p<0.001),微生物总数平均值以针阔混交林最高,数量是(40.5±13.4)×105CFU.g-1,毛竹林[(27.9±8.1)×105CFU.g-1]和常绿阔叶林[(30.2±11.0)×105CFU.-g 1]次之,杉木林的数量最少[(17.9±5.8)×105CFU.g-1];(2)不同林型土壤微生物中,各类微生物组成比例不尽相同.从总体来看,以细菌占绝大多数(平均为74.6%),其次是放线菌(平均为13.9%),真菌较少(平均为11.5%);(3)同一林型在不同时间条件下,各种土壤微生物的数量与其占微生物总数的比例均呈现出明显动态变化特征.
Four different forest types in Xiaokeng forestry farm, Nanling mountains, South China, were investigated and some soil samples were obtained with a simple sampling method from the four forest types. The amount of soil microbes, including bacteria, epiphytes and actinomyces in the forest types, was analyzed with microculture plate dilution method. The results show as follows. （1） There was significant difference in soil microbial amounts among the different forest types （p= 0. 001）. They were ranked according to soil microbial amounts as the mixed broadleaf-conifer forest （（40. 5±13.4）×10^5CFU·g^-1）〉the evergreen broad-leaved forest （（30.2±11.0）×10^5CFU·g^-1）〉 the moso bamboo （phyllostachys heterocycla pubescens） forest （（27.9±8. 1）×10^5CFU·g^-1）〉 the Chinese fir （Cunningiamia lanceolata） plantation （（17. 9±5. 8）×10^5CFU·g^-1）. （2） The percentage composition of soil micorbes varied with different stands. The amount of soil becteria accounted for the majority of the total amount of soil microbes with an average of 74.6% while the amounts of soil actinomycetes and epiphyte were in the minority, with an average of 13. 9% and 11.5 %, respectively. （3） The amounts of soil microbes and its percentage composition show an obvious change even in the same forest stand.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2007年第3期1-4,13,共5页
Journal of Central South University of Forestry & Technology
基金
中南林业科技大学青年科学重点基金项目(05009A)
广东省自然科学基金项目(032384)
韶关学院重点学科建设蔬菜学
韶关学院博士启动基金(316-140222)
关键词
南岭
林型
土壤微生物
数量
Nanling mountains
forest types
soil microbes
amount
