互花米草( Spartina alterniflora Loisel) 自 1982 年在江苏沿海栽种以来, 在江苏沿海已形成了大片互花米草盐沼。本文通过对历年TM 卫星相片上互花米草盐沼的识别、判读及统计, 认为江苏沿海互花米草盐沼的年扩展速度在早期较慢, 仅为 23.4 %, 中期较快为 89 %, 后期又减慢为 48 %。 结合野外调查, 绘制出了江苏沿海互花米草的分布图。 此外, 就互花米草盐沼对江苏沿海湿地植被演替的影响进行了讨论。
 

Spartina alterniflora Loisel is introduced from the U .S .A .to China and it is a new kind of plant to Chinese environment .There has come into being large area of S. alterniflora salt marsh on Jiangsu Province coast since the planting of S .alterniflora in 1982 .By distinguishing the several remote sensing pictures of TM made in past several years, the expanding process of S. alterniflora salt marsh on Jiangsu Province coast was analyzed .The results show that the average annual expanding rate of S. alterniflora salt march is 23 .4 %in the early time, 89 % in the middle time, and 48 % in the latter time .The distributing picture was drawn combining with the field investigation .Finally, the influence of S. alterniflora on vegetation succession of Jiangsu Province coast was also discussed .