中文摘要：

江苏海岸上的绳索草殖民，东方中国，以生态系统结构修改本国的盐沼。从 1992 ～ 2003 的 Landsat TM 图象被分析在这个沿海的区域上识别盐沼的植被分发模式和他们的变化，以便评估传播人工地介绍的盐土植物 Spartina 的效果。监督分类用乐队被执行 3， 4 和 5 与一起在训练样品的 situ，在学习区域导出植被的分发模式。进一步，以便与不同潮汐的举起识别 intertidal 区域，一个数据处理过程被设计在密度片提取的 TM 图象上用泛音分析把地区性的水水平数据与吃水线相结合。结果显示出那：(1 ) 自从它被介绍， Spartina alterniflora 区域很快向海一直在膨胀，特别在起始的阶段；( 2 )在内部潮汐的地区，本地沼泽地植物 Suaeda salsa 和异国情调的种类 Spartina 的上面的部分， anglica 在海塘附近仅仅是在场的，占据仅仅全部盐沼的小部分，并且这的区域二种由陆路被减少了开垦；(3 ) 有一个趋势让 Spartina alterniflora 在学习区域在盐沼成为主导的种类；并且(4 ) Spartina alternifloras 朝海的方向穗的举起在小潮上接近了吝啬的高水位线，并且它的向陆地边界比吝啬的高水位线稍微高。学习区域的盐沼环境被 Spartina 植被很快修改最后 12 年了。

英文摘要：

Cord grass colonization on the Jiangsu coast, eastern China, modifies the native salt marshes in terms of ecosystem structure. The Landsat TM images from 1992 to 2003 were analyzed to identify salt-marsh vegetation distribution patterns and their changes over this coastal region, in order to evaluate the effects of the spreading of the artificially introduced halophyte Spartina. Supervised classification was performed using Bands 3, 4 and 5 in conjunction with in situ training samples, to derive the distribution pattern of the vegetation in the study area. Further, in order to identify the intertidal areas with different tidal elevations, a data treatment procedure was designed to combine regional water level data using harmonic analysis with the waterlines on the TM images extracted by density slice. The results show that： （1） the Spartina alterniflora area has been expanding towards the sea rapidly since it was introduced, especially at initial stages; （2） in the upper part of the inter-tidal zone, the local marsh plant Suaeda salsa and the exotic species Spartina anglica were present only near the sea dyke, occupying only a small part of the entire salt marsh, and the area of these two species has been reduced by land reclamation; （3） there has been a trend for Spartina alterniflora to become the dominant species in the salt marshes in the study area; and （4） the elevation of Spartina alterniflora’s seaward fringe was close to mean high water on neaps, and its landward boundary was slightly higher than mean high water. The salt marsh environment of the study area has been modified rapidly by the Spartina vegetation for the last 12 years.