CAJ | 학술논문

本研究以中国科学院红壤生态实验站侵蚀地植被恢复试验区为依托,调查侵蚀裸地不同植被恢复类型林地表层土壤微生物特性.结果表明:侵蚀裸地种植植被后,表层土壤酸化程度减小,土壤养分含量和孔隙度显著提高,微生物生物量增加、活性增强;不同植被恢复类型相比,各指标的大小顺序均为樟树>胡枝子>马尾松;侵蚀裸地植被恢复前后表层土壤均以细菌为主,其中马尾松林地表层土壤真菌比例最高:植被恢复林地土壤有机C处于累积阶段,土壤微生物对C的利用率显著提高,但不同植被恢复类型之间无显著差异.
본연구이중국과학원홍양생태실험참침식지식피회복시험구위의탁,조사침식라지불동식피회복류형임지표층토양미생물특성.결과표명:침식라지충식식피후,표층토양산화정도감소,토양양분함량화공극도현저제고,미생물생물량증가、활성증강;불동식피회복류형상비,각지표적대소순서균위장수>호지자>마미송;침식라지식피회복전후표층토양균이세균위주,기중마미송임지표층토양진균비례최고:식피회복임지토양유궤C처우루적계단,토양미생물대C적이용솔현저제고,단불동식피회복류형지간무현저차이.
This study reports the effects of different vegetation restoration on soil microbial characteristics, based on a long-term experiment established in 1987 at the Ecological Experimental Station of Red Soil, Chinese Academy of Sciences. This experiment included different types of vegetation planted on eroded bare land. The results showed that soil pH, soil nutrients, soil total porosity, soil microbial biomass and soil respiration rate increased significantly under different vegetations restoration compared with the eroded bare land. The concentrations of indices measured under Cinnamomum camphora were higher than that under Lespede=a bicolor, Pings massoniana forest had the lowest the concentrations of indices measured. Soil microbial community was mainly composed of bacteria in all treatments. The ratio of ergosterol-C to microbial biomass carbon was the highest under Pings massoniana among all treatments. Soil organic matter accumulated with vegetation restoration land. At the same time, the availability of carbon for soil microbe increased significantly, but not significantly different among vegetation types.