Intraspecific Competition in Natural Ulmus pumila var.sabulosa Forests in Hunshandake Sandland浑善达克沙地天然沙地榆种内竞争研究
Studies of Intraspecific Competition of Fruit Flies Bactrocera cucurbitae (Coquillett) and B tau (Walk)(Dipt瓜实蝇和南瓜实蝇的种内竞争
The effects of intraspecific competition on the relationship between height growth and biomass of annual plants种内竞争对一年生植物高生长与生物量关系的影响