羊草－杂类草草原火状况研究  

Fire regime of Aneurolepidium chinense-herbage steppe

作　　者：周道玮[1] 郑焕能[1] 周以良[1] 

机构地区：[1]东北师范大学国家草地生态工程实验室,东北林业大学森林资源与环境学院

出　　处：《应用生态学报》1995年第1期34-38,共5页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金

摘　　要：研究了羊草－杂类草草原火状况，设计一种研究无树草原火周期的方法．结果表明，羊草－杂类草草原较为稳定的着火季节时间为每年的５月和１０月．自然火周期为４年，人为火周期为２５年．火强度足以彻底清除地上草本枯落物．草原牲畜粪便等大型可燃物是影响火烧迹地内部格局的主要因素．讨论了火烧产生的各种现象的生态学意义，定义了火成因子．In this paper, the fire regime of Aneurolepidium chinense-herbage steppe is studied and adevised method is used to study the fire cycle of treeless grassland. The results show thatgrassland fire often occurs in May and October, the natural fire cycle is 4 years, and theman-made one is 25 years. The herbaceous layer on grassland is burned by the fire. andthe burned dung of livestocks is the major factor affecting the internal pattern of burnedarea. The ecological implications of phenomena produced by burning are discussed and thefire-generated factors are definited.

关 键 词：羊草 草原 火状况 火成因子 

分 类 号：S812[农业科学—草业科学] S543.901[农业科学—畜牧学]