摘要
广西英罗港红树林区滩涂和光滩潮水中大型底栖动物和游泳动物曾很丰富。近４年来由于海鲜价格不断提高，林区的人为滥捕已使大型底栖动物和游泳动物的数量分别下降了约６０％和８０％。捕获方式有挖掘滩涂底栖动物，在红树林光滩潮水和林内潮沟进行网捕、炸鱼和毒鱼，网眼小至０．２５ｃｍ。传统的捕获萎缩了生态食物网的通量，破碎了生境，威胁着种群的繁衍。由于红树林区的渔业多少是当地群众的生计，完全封闭滩涂进行保育目前不可能。为此建议对英罗港红树林区滩涂施行封滩轮育。
Benthic macrofauna and nektons used to be abundant on the tidal flats and mangrove exposed tidal waters in the mangrove zone of Yingluo Bay,Guangxi.However,their amounts decreased by about 60% and 80% respectively in the past four years.This was directly caused by human uncontrolled collection of the species that have increasing commercial values at the markets.The methods of collection included digging macrobenthos on tidal flats,netting,bombing and poisoning fish in mangrove exposed tidal waters and water ways.The mesh size of the nets was usually as small as 0.25 cm.These traditional fishing activities extremely decreased the flow of matter and energy among the mangrove food web,fragmented animal habitats,and endangered the survival of populations.The mangrove fishery was whatever vital for the local residents,thus entire close of the mangrove tidal flat for conservation is impossible at present. So,a technique of turn flat closed nursery was suggested for the management of the mangrove tidal flats in Yingluo mangrove area. Meanwhile, enhance of public education was also recommended.
出处
《生物多样性》
CAS
CSCD
1996年第3期167-174,共8页
Biodiversity Science
基金
国际野生动物保护学会青年野外考察基金
广西科学院科学基金
关键词
渔业资源
传统渔业活动
红树林区
管理
Traditional fishing,influence,mangrove fisheries,turn flat closed nursery
