Detecting and assessing Spartina invasion in coastal region of China: A case study in the Xiangshan Bay
文献类型：期刊论文
| 作者 | Zhu Changming1; Zhang Xin1; Qi Jiaguo1 |
| 刊名 | ACTA OCEANOLOGICA SINICA
 |
| 出版日期 | 2016 |
| 卷号 | 35期号:4页码:35-43 |
| 关键词 | LAND-USE CHANGE DENSITY-FUNCTION FAVORITE PLACES DYNAMICS URBAN CLASSIFICATION BIODIVERSITY IMPACTS HABITAT SYSTEMS |
| 通讯作者 | Zhang, X (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing 100101, Peoples R China. |
| 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 1970s. 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 hm(2), but quickly reached to 1 745 hm(2) in 2009, and 5 715 hm(2) 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. |
| 学科主题 | Oceanography |
| 类目[WOS] | Oceanography |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000374250700005 |
| 源URL | [http://ir.radi.ac.cn/handle/183411/39476]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | 1.Jiangsu Normal Univ, Dept Geog & Environm, Xuzhou 221116, Peoples R China 2.Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing 100101, Peoples R China 3.Michigan State Univ, Ctr Global Change & Earth Observat, E Lansing, MI 48864 USA |
| 推荐引用方式 GB/T 7714 | Zhu Changming,Zhang Xin,Qi Jiaguo. Detecting and assessing Spartina invasion in coastal region of China: A case study in the Xiangshan Bay[J]. ACTA OCEANOLOGICA SINICA,2016,35(4):35-43. |
| APA | Zhu Changming,Zhang Xin,&Qi Jiaguo.(2016).Detecting and assessing Spartina invasion in coastal region of China: A case study in the Xiangshan Bay.ACTA OCEANOLOGICA SINICA,35(4),35-43. |
| MLA | Zhu Changming,et al."Detecting and assessing Spartina invasion in coastal region of China: A case study in the Xiangshan Bay".ACTA OCEANOLOGICA SINICA 35.4(2016):35-43. |
入库方式： OAI收割
来源：遥感与数字地球研究所
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