深圳西海岸湿地资源遥感动态监测

Dynamic Remote-sensing Monitoring of Wetland Resources in the Western Coast of Shenzhen City

为了对深圳西海岸湿地资源进行监测研究,以1986年、1998年和2006年三幅Land-sat TM遥感影像为基础,通过对不同地物进行光谱分析,确定阈值,提取各个湿地类型;结合地形图和实地调查进行目视解译纠正,然后叠加进行监督分类,得到了20年来深圳西海岸湿地资源类型以及地理分布和面积的变化结果。在遥感解译的基础上,结合深圳的社会经济发展,探讨了该地区湿地变化的原因,对该地区的湿地变化做出预测,并提出保护建议。

In order to investigate and monitor the wetland resources in the western coast of Shenzhen City, this paper illustrates the image process and interpretation based on Land-sat TM remote-sensing data of 1986, 1998 and 2006. Through the spectral analysis, the threshold values for different ground objects are determined to extract and rectify the wetland types by visual interpretation in combination with topography map and field survey. Then, it uses superposition analysis and supervised classification method to obtain the geographic distribution and area changes of wetland. Finally, based on the results of remote sensing interpretation, the cause of the wetland change in the western coastal of Shenzhen City is discussed by combining the local economic development. Besides, the future tendency of wetland changes in Shenzhen City is predicted. Meanwhile, several good suggestions are put forward to protect the existing wetland resources and promote the sustainable environment development.