CAJ | 학술논문

为探明内蒙古乌梁素海湿地土壤微生物主要类群的分布特征，选取湿地过渡带典型植被包括芦苇、碱蓬、白刺3种不同的植物群落，在小河口和退水处设两条平行样带，采用平板计数法对湿地土壤中细菌、真菌和放线菌的数量、组成和分布特征进行了研究。结果表明，不同群落下土壤微生物类群数量和分布明显不同，而且优势类群明显。好气性细菌在小河口芦苇土壤中最多，芽孢型细菌在对照的周边农田土壤中最多，放线菌和真菌在白刺土壤中最多。常年积水的芦苇群落土壤中细菌占主导，季节性淹水的白刺群落土壤中放线菌和真菌数量明显增加，微生物组成结构随环境因子的变化而改变。土壤芽孢型细菌、真菌和放线菌与土壤全氮含量显著相关，说明土壤氮素是调节湿地生态系统土壤微生物代谢及物质转化的关键因子之一。
위탐명내몽고오량소해습지토양미생물주요류군적분포특정，선취습지과도대전형식피포괄호위、감봉、백자3충불동적식물군락，재소하구화퇴수처설량조평행양대，채용평판계수법대습지토양중세균、진균화방선균적수량、조성화분포특정진행료연구。결과표명，불동군락하토양미생물류군수량화분포명현불동，이차우세류군명현。호기성세균재소하구호위토양중최다，아포형세균재대조적주변농전토양중최다，방선균화진균재백자토양중최다。상년적수적호위군락토양중세균점주도，계절성엄수적백자군락토양중방선균화진균수량명현증가，미생물조성결구수배경인자적변화이개변。토양아포형세균、진균화방선균여토양전담함량현저상관，설명토양담소시조절습지생태계통토양미생물대사급물질전화적관건인자지일。
Wuliangsuhai wetland is the largest wetland on the same latitude in the world, and plays important roles in maintaining ecological functions of its surrounding area. In the present study, community structure of bacteria, fungi and actinomycetes were profiled in three types of wetland soils and a farmland soil grown with Phragmites australis, Suaeda salsa, Nitraria tangutorum and Helianthus annuus, respectively, from Wuliangsuhai wetland. Bacteria were dominant, while fungi minor in all soils. Quantities of microorganisms were different under differ-ent types of plants. The largest number of bacteria was found at Phragmites australis soil of Xiaohekou site, whereas fungi and actinomycetes were the most abundant in Nitraria tangutorum soil. Farmland soil had the highest spore-forming bacteria. The results indicate that the dis-tribution of microbes in soil is closely related with vegetation type and soil nutrients.