基于高分二号数据的湖南省十大水库网箱围栏养殖分布遥感调查

Remote sensing survey on the distribution of cage-fenced culture in the top 10 reservoirs of Hunan province based on GF-2 data

水库尤其是饮用水水源型水库的网箱围栏养殖对水域环境影响较大,利用高分辨率遥感具有丰富空间信息和纹理信息的特点,可以有效提取网箱养殖的分布信息。本文以高分二号卫星遥感影像为数据源,利用人机交互目视解译的方法提取湖南省十大水库等内陆水域网箱养殖信息,研究了网箱养殖空间分布情况,并估算了网箱养殖的氮、磷年排放量,为水产行业部门监管提供了有力的技术支撑。

The cage-fenced culture of reservoirs,especially drinking water source reservoirs,has a great impact on the water environment.High-resolution remote sensing is rich in spatial information and texture information,which can effectively extract the distribution information of cage culture.In this paper,the high-resolution satellite remote sensing image is used as the data source,and the human-computer interaction visual interpretation method is used to extract the cage-fenced culture information of inland waters such as the top ten reservoirs in Hunan province.The spatial distribution of cage culture is studied and estimated.The annual nitrogen and phosphorus emissions from cage culture provide a strong technical support for the supervision of the fisheries industry sector.