论文部分内容阅读
评估森林凋落物的管理效应是一项重要的工作,本文在亚热带湖南会同林区,通过2011年5月布置的野外控制实验,采用区组设计和巢式设计,通过添加凋落物与否来检查凋落物的数量效应,添加阔或针叶凋落物来检查凋落物的质量效应,研究了叶凋落物对土壤动物群落的影响。在2012年7月对土壤动物多度、多样性、群落组成等指标进行测量,检测到跳虫多度对添加凋落物处理以及双翅目幼虫多度对凋落物类型处理有显著响应,其他指标包括土壤动物的群落组成和多样性则未能检测出显著效应。添加凋落物显著提高了土壤的生物学质量值,幅度达32.45%,且巢式方差分析显示这种增加与凋落物类型无关,表明在土壤质量演变的较早阶段,凋落物数量在该地区起到了更加重要的作用。由于土壤生物学质量比多度、多样性等指标要灵敏得多,因此基于土壤动物的土壤生物学质量指数可以作为评估森林凋落物管理效果的指标。
It is an important work to evaluate the management effect of forest litter. In the field of subtropical Hunan Huitong forest, we conducted the field control experiment in May 2011 and adopted the block design and the nested design to check the litter by adding litter or not The quantitative effects of litter on the fauna were studied by adding broad or coniferous litter to examine the quality effects of litter and studying the effects of leaf litter on soil fauna. In July 2012, the indices of soil animal abundance, diversity and community composition were measured. It was detected that the abundance of the hopper had a significant response to litterfall treatment and the abundance of Diptera larvae to the litter type. Other indicators Community composition and diversity, including soil fauna, failed to detect significant effects. Adding litter significantly increased soil biological quality values by 32.45%, and nested analysis of variance showed no association with litter types, indicating that litter abundance in the earlier stages of soil quality To a more important role. Because the soil biological quality is more sensitive than the abundance and diversity indicators, the soil biological quality index based on soil fauna can be used as an index to evaluate the management effect of forest litter.