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红树林是生长于热带、亚热带潮间带特有的植物群落,不仅对海岸带起到极为重要的保护作用,也是生物多样性最丰富的生态系统之一,因而受到广泛的关注。本文采用遥感方法,并结合野外路线调查验证,对北部湾地区红树林分布进行分析。结果来看,①北部湾沿岸红树林丰富,从西部北仑河口至东部安铺港沿岸均有分布,研究区红树林分布总面积7172 hm~2,其中位于我国境内为6331 hm~2,长势良好。②对北部湾沿岸分10区进行统计分析,面积超过700 hm~2的有五区:北仑河口区、珍珠港区、茅尾海-钦州港区、铁山港区和丹兜海-英罗港区,分布面积最小的是北海银滩-白龙港区,面积只有217 hm~2。③从分布密度和成片性来看,分布最好的丹兜海-英罗港区、珍珠港区和北仑河口区,其分布成片性好,密度大,长势较好。
Mangroves are a kind of plant community that grows in tropical and subtropical intertidal zone. It not only plays an important role in protecting the coastal zone, but also one of the most biodiverse ecosystems. In this paper, the remote sensing method, combined with the field route survey verification, mangrove distribution in the Beibu Bay area. The results show that: ①British mangroves along the coast of Beibu Gulf are distributed from the Beilun estuary in the west to the coast of Anbu Port in the east. The total area of mangroves distributed in the study area is 7172 hm ~ 2, of which 6331 hm ~ 2 in China, which is in good condition . ② According to the statistical analysis of the Beibu Gulf coast in 10 districts, the area is over 700 hm ~ 2. There are five districts: Beilun estuary area, Pearl Harbor area, Maoweihai-Qinzhou port area, Tieshangang area and Danduhai-Yingluo Port area, the smallest distribution area is Beihai Silver Beach - Bailonggang area, an area of only 217 hm ~ 2. ③ From the distribution density and into the sheet of view, the distribution of the best Dandong - Yingluo Port, Pearl Harbor and Beilun estuary, the distribution of the film is good, dense, good growth.