MODIS数据在浒苔遥感监测中的应用能力评价

发布时间：2018-01-08 18:09

本文关键词：MODIS数据在浒苔遥感监测中的应用能力评价　出处：《遥感信息》2017年04期 　论文类型：期刊论文

【摘要】：鉴于MODIS数据空间分辨率较低,混合像元效应影响显著导致的浒苔面积提取具有较大不确定性的问题,在对浒苔以及海水光谱信息分析的基础上,提出了基于归一化植被指数的浒苔面积提取方法,然后选取山东半岛周边海域作为研究区域,以空间分辨率较高的Landsat-8OLI卫星影像提取的浒苔信息为基准,与准同步MODIS卫星影像提取的结果进行比较,来评价MODIS数据在浒苔遥感检测中的应用能力。结果表明:1)MODIS影像容易漏提面积小、分布离散的浒苔,而对面积大、分布集中的浒苔存在面积夸大的问题;2)MODIS数据识别出浒苔的概率随着MODIS像元内浒苔所占面积比的增加而快速增加,当单个MODIS像元内的浒苔面积比为75%时,有50%的浒苔像元被识别出来。
[Abstract]:In view of the low spatial resolution of MODIS data, the effect of mixed pixels leads to significant area extraction of Enteromorpha with uncertainty problems, based on the analysis of Enteromorpha and seawater spectral information, extraction method is proposed based on the normalized difference vegetation index of Enteromorpha area, and then select the surrounding waters of Shandong Peninsula as the study area, extracted from Landsat-8OLI satellite image the high spatial resolution of Enteromorpha information as a benchmark, compared with the quasi synchronous MODIS satellite image extraction results, to evaluate the MODIS data in the remote sensing detection of Enteromorpha application ability. The results showed that: 1) the MODIS image provided easy to leak a small area, the distribution of discrete Enteromorpha, large area, concentrated the existence of Enteromorpha the area of exaggerated problems; 2) MODIS data to identify the probability of MODIS pixel with Enteromorpha Enteromorpha area ratio increases rapidly increased, when a single A MODIS pixel in Enteromorpha area ratio is 75%, there are 50% pixel Enteromorpha were identified.

【作者单位】：山东科技大学测绘科学与工程学院;曲阜师范大学地理与旅游学院;航天五院503所;水利部黄河水利委员会;
【分类号】：TP751;X87
【正文快照】： 3.航天五院503所,北京100086;4.水利部黄河水利委员会,郑州450003)0引言浒苔(enteromorpha)是重要的经济海藻,属于绿藻门,绿藻纲,石莼目,浒苔属[1]。在一定的环境条件下,浒苔的爆发性繁殖和高度聚集将形成绿潮灾害[2-4],严重破坏海洋的生态环境,甚至影响人类的生活,已经引起了

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