摘要
This paper studied the reproductive strategies of Kobresia humilis in alpine meadow about its sexual reproduction,vegetative reproduction and reproductive efforts respectively.The results show that the seed output of Kobresia humilis is 715.5 per unit(m 2).The germination is above 60% in fit condition,while only about 3% in field.There is only 16.13% seed which get into seed bank and remain vitality till grass greening.So the seedling is only 3.46 per unit(m 2) in field.But the new ramets of Kobresia humilis are 711.34 unit(m 2) from vegetative reproduction.In addition,vegetative reproductive effort is more than sexual reproductive effort. It constitutes 93.5% of all reproductive efforts.Therefore,the main reproductive strategy of Kobresia humilis is vegetative reproduction,and sexual reproduction is secondary in alpine condition.
This paper studied the reproductive strategies of Kobresia humilis in alpine meadow about its sexual reproduction,vegetative reproduction and reproductive efforts respectively.The results show that the seed output of Kobresia humilis is 715.5 per unit(m 2).The germination is above 60% in fit condition,while only about 3% in field.There is only 16.13% seed which get into seed bank and remain vitality till grass greening.So the seedling is only 3.46 per unit(m 2) in field.But the new ramets of Kobresia humilis are 711.34 unit(m 2) from vegetative reproduction.In addition,vegetative reproductive effort is more than sexual reproductive effort. It constitutes 93.5% of all reproductive efforts.Therefore,the main reproductive strategy of Kobresia humilis is vegetative reproduction,and sexual reproduction is secondary in alpine condition.
出处
《生态学杂志》
CAS
CSCD
北大核心
2001年第6期68-70,共3页
Chinese Journal of Ecology
基金
中国科学院海北高寒草甸生态系统开放实验站基金资助
南通师范学院课题资助
关键词
高寒草旬
矮蒿草种群
繁殖对策
alpine meadow,Kobresia humilis,ramet,reproductive effort.reproductive strategy.
