互花米草自1979年引入我国后在沿海滩涂迅速蔓延,产生多种危害,甚至威胁红树林的生长。虽然互花米草已经成功侵占光滩、红树林的边缘,甚至入侵到红树林内的林窗,但迄今为止,互花米草还未能入侵林冠完整的红树林生境。 为了解漳江口红树林区互花米草不同入侵格局的成因,我们在漳江口国家级红树林自然保护区的红树林、红树林-互花米草交错区、互花米草丛及光滩这四种生境开展实验:通过调查单位面积互花米草产量、一定体积土壤中互花米草种子的数目、实生苗自然更新的数量来了解繁殖体压力对互花米草在四种生境中更新的效应;设置野外四种生境下实生苗存活生长的控制实验及动物取食种子实验,结合四种生境中蟹类种群的时空动态调查、室...Spartina alterniflora is invading the entire Chinese coast, occupying mudflats through this range, forming mangrove-Spartina ecotone and displacing mangroves in the upper intertidal of south China. Multiple factors may interact to mediate the spread of S. alterniflora, however, the mechnaism was poorly understood. We carried out experiments in four habitats of Zhangjiang Estuary: mangrove, ecoton...学位:理学硕士院系专业:生命科学学院_水生生物学学号:2162011115236