摘要
本研究调查了外来入侵植物互花米草在漳江口红树林自然保护区的分布状况,分析了不同生长阶段互花米草的无性扩散能力。结果表明:漳江口红树林自然保护区沿江不同盐度梯度下都有互花米草的生长分布,相比红树植物,互花米草具有较宽的生态幅度,盐度适应范围也较广(2‰-30‰)。互花米草主要以无性繁殖的方式扩散,苗期是快速扩散时期,在互花米草与红树植物分布集中区,互花米草在苗期的扩散距离最大,可达到238±20cm,适当的盐度(15‰左右)可以促进互花米草的繁殖扩散,25‰以上的高盐度对互花米草的繁殖扩散则有明显的抑制作用。
This study investigated the distribution and the diffusion of the invasive plant Spartina alterniflora along the Zhangjiang River in Fujian. The results showed that S. alterniflora can grow and propagate along the river under different salinity gradients in Zhangjiang Estuary, compared to mangrove species, it has a wider ecological amplitude, as for the wider scope to adapt the salinity （2‰ -30‰）. S. alterniflora ates by asexual reproduction. The seeding stage spreads rapidly, at the seeding stage S. alterniflora prolifercan out- ward diffusion to 238 ± 20 cm,The appropriate salinity （about 15‰） stimulated the proliferation of the S. alterniflora while higer salinity （above 25‰） inhibited its proliferation.
出处
《青海农林科技》
2013年第3期19-21,87,共4页
Science and Technology of Qinghai Agriculture and Forestry
关键词
漳江口
互花米草
分布
扩散
Zhangjiang Estuary
Spartina alterniflora
Distribution
Diffusion
