摘要
砂质海岸是广东和海南岛主要岸线类型,占岸线总长1/3以上,其规模取决于岸线轮廓、物质来源、海岸动力等因素。据不同动力过程、粒度、结构与历史的差别,从海向陆一般可分为海滩沙、岸堤沙,风积沙和晚更新世老红砂等不同沉积类型;据形态特点、沉积特征和分布情况,可将现代砂质海岸分为7种地貌类型。砂质海岸蕴藏着可供开发利用的资源,如沙荒地的改造利用、砂矿开采、海滨旅游、港口建设等。
The sand coast, which runs about 1861.1 km in length and is 37.3% of the total length of the Guangdong and Hainan coastline, is a major coastal type in Guangdong and Hainan provinces.Development of sand coasts depends on the coastline forms, resources of sediment, dynamic factors, etc. According to geomorphelogic forms, depositional features and distribution, geomor -phologic types of sand coast can be divided into longshore bar, bay bar,sand spit in river mouth, baymouth bar, offshore bar, tombolo and cusp bar.Sand coasts,which are extensively distributed in Guangdong and Hainan, are rich in natural resources which can be developed and utilized, e. g., the utilization of sand desert, exploitation of sand mine in the longshore area, and development of tourism resources at the beach.Due to mobility of the sand coast, more attention must be paid to some problems,such as the deposition in port channels and coastal erosion.
出处
《热带海洋》
CSCD
1989年第1期43-51,共9页
