摘要
沙地云杉种群种子雨的时空分布规律邹春静徐文铎（中国科学院沈阳应用生态研究所，１１００１５）刘广田（内蒙古白音敖包自然保护区，０２５３７５）ＴｈｅＳｐａｔｉａｌ－ＴｅｍｐｏｒａｌＤｉｓｔｒｉｂｕｔｉｏｎｏｆＳｅｅｄＲａｉｎｉｎＰｉｃｅａＭｏｎｇｏｌｉｃ...
Chinese Journal of Ecology,1998,17(3):16-19.The flux of seed into and out of a unit of habitat determmines the potential population of that habitat. The process is called seed rain. Based on the study of spatialtemporal heterogeneity of seed rain in Picea mongolica population, we found that its seed rain is a spatial process, that is to say, the seed rain intensity (SRI) is maximum in the distance 5-10 meters from the mother tree and it is difference in different directions. SRI is maximum with wind, then across wind and finally against wind. Furthermore, the seed rain is a temporal process too. The period of seed rain is about two weeks. SRI is maximum in 2-5 days and its spatial heterogeneity is as former. Based on the seed characters and dispersibility of Picea mongolica, we estimate that a single mature tree (DBH=50cm, Height=17m) can produce 1.6kg seed and 40kg fresh cores.
出处
《生态学杂志》
CAS
CSCD
北大核心
1998年第3期16-19,共4页
Chinese Journal of Ecology
基金
国家自然科学基金
关键词
沙地
云杉
种子雨
时空分布
Picea mongolica, seed rain, dynamics, heterogeneity.
