中文摘要：

Spartina alterniflora 是沿着在中国的沿海的区域的异国情调的植物之一。它在以后的 1970 年代作为生态的恢复的一条重要工程途径被介绍。由于它的好适应性和强壮的繁殖能力，然而，介绍种类爆发地快速沿着沿海的区域正在传播并且在沿海的沼泽地生态系统的健康和安全上导致重要影响。确定是必要的空间程度和 S 的率。alterniflora 散漫以便估计它的生态的损坏和经济影响。遥感技术被用来探讨这些挑战但是大由于失败混合光谱性质。在这研究，一个混合方法为 S 被建议。用由集成 S 的空间、光谱的特征的中等决定遥感图象的 alterniflora 察觉。alterniflora。混合方法由二个阶段组成：(1 ) intertidal 地区的描述作为 S 的潜在的区域。alterniflora 分发并且(2 ) S 的抽取。有混合象素分析的 alterniflora 部分分发。建议方法在东方上在 Xiangshan 海湾被测试浙江省的沿海的区域，中国，并且印射 S 的空间程度。有 Landsat 数据集在的 alterniflora 2003， 2009 和 2014。结果显示出那， S。alterniflora 在过去的 10 年指数地成长了。在 2003， S 的全部的区域。alterniflora 是大约 590 hm ², ，但是快速在 2014 在 2009，和 5 715 hm ² 到达了到 1 745 hm ² 。与在一十年以内的近似 10 褶层生长的率，侵略的种几乎占据了所有泥泞沙滩在这个区域成为最主导的沿海的盐植被。强壮的生物繁殖能力是为如此的快传播和同时人的开垦的主要原因，这被相信活动也被相信为 S 便于环境条件。alterniflora 散漫。

英文摘要：

Spartina alterniflora is one of exotic plants along the coastal region in China. It was introduced as an important engineering approach to ecological restoration in the later 1970 s. However, owing to its good adaptability and strong reproductive capacity, the introduced species is explosively spreading along the coastal region quickly and resulting in a significant impact on the health and safety of coastal wetland ecosystems. It is imperative to quantify the spatial extent and the rate of S. alterniflora sprawl in order to assess its ecological damages and economic impacts. Remote sensing techniques have been used to address these challenges but large unsuccessful due to mixed spectral properties. In this study, a hybrid method was proposed for S. alterniflora detection using medium resolution remote sensing images by integrating both spatial and spectral features of S. alterniflora. The hybrid method consists of two phases：（1） delineation of intertidal zone as the potential area of S. alterniflora distribution and（2） extraction of S. alterniflora fraction distribution with a mixture pixel analysis. The proposed method was tested at the Xiangshan Bay on the east coastal region of Zhejiang Province, China, and mapped the spatial extent of S. alterniflora with Landsat datasets in the 2003, 2009 and 2014. The results showed that, the S. alterniflora has grown exponentially over past 10 years. In 2003, the total area of S. alterniflora was about 590 hm2, but quickly reached to 1 745 hm2 in 2009, and 5 715 hm2 in 2014. With a rate of approximately 10-folds growth within a decade, the invasive species almost occupied all muddy beaches to become the most dominant coastal salt vegetation in this region. It is believed that the strong biological reproductive capacity was the primary reason for such quick spread and at the same time human reclamation activities were also believed to have facilitated the environmental conditions for S. alterniflora sprawl.