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为了解不同植被恢复模式对土壤纤毛虫群落特征的影响,于2011年10月至2012年9月用“活体观察法”和“三级十倍环式稀释法”对定西市巉口林业试验场3种不同植被恢复模式(云杉林、杨树林、混交林)和不同恢复阶段的土壤纤毛虫群落进行了研究。共鉴定到141种纤毛虫,隶属于3纲10目37科50属。结果表明,不同植被恢复模式样点的土壤纤毛虫群落特征存在明显差异,混交林群落最优,而杨树林最差,纤毛虫物种数、丰度、物种多样性及群落组成的复杂性都表现为混交林>云杉林>杨树林。随着植被恢复时间的延长,云杉林和混交林纤毛虫群落结构趋于复杂化,物种数、丰度和物种多样性均呈现出明显的上升趋势,而杨树林相反。结果显示,混交林恢复模式大大改善了该区土壤环境质量,使得纤毛虫群落结构不断优化,更有利于该区生态环境的恢复重建。
In order to understand the effect of different vegetation restoration patterns on soil ciliates community characteristics, from October 2011 to September 2012, using “live observation method” and “three-stage ten-fold circular dilution method” Three different vegetation restoration models (Picea mongolica, Populus × bracteatum, mixed forest) and soil ciliates communities under different restoration stages were studied in the field of experimental forestry. A total of 141 species of ciliates were identified, belonging to 3 orders, 10 orders, 37 families and 50 genera. The results showed that there were significant differences in soil ciliates community characteristics among different vegetation restoration patterns. The mixed forest community was the best, while the poplar forest was the worst. The species, abundance, species diversity and community composition complexity of the ciliates showed as Mixed forest> spruce forest> poplar forest. With the extension of vegetation restoration time, the structure of ciliate community in spruce and mixed forest tended to be complicated, and the species number, abundance and species diversity showed a clear upward trend, while the poplar forest was the opposite. The results showed that the restoration model of mixed forest greatly improved the soil environmental quality in this area, making the structure optimization of ciliates community more conducive to the restoration and reconstruction of ecological environment.