广东雷州珍稀海洋生物国家级自然保护区 海水环境质量状况分析与评价

2018年9月和12月,两次调查了广东雷州珍稀海洋生物国家级自然保护区海域海水的环境质量。结果表明,该保护区平均综合水质指数为0.38,一类海水平均达标率为93.59%,海水中铅、磷酸盐、锌的含量达标率偏低,分别为53.85%、73.1%、96.15%。12月保护区海水中的无机氮、磷酸盐、溶解氧、叶绿素a含量明显高于9月,保护区实验区和缓冲区站位的水质优于核心区站位的水质。该保护区海域综合水质定性评价结果为优。靠近康港附近站位的营养盐相对偏高,磷酸盐的平均达标率仅为73.1%,因此,需加强对康港附近海域养殖情况的监控,尽量减少养殖废水对保护区海域的排放,保持保护区海水清洁,以利于对保护区内珍稀海洋生物及其栖息地的保护。

Analysis and Evaluation of Seawater Environment Quality in Guangdong Leizhou Rare Marine Life National Nature Reserve

Sea water quality in Guangdong Leizhou Rare Marine Life National Nature Reserve was investigated twice in September and December of 2018.The results showed that the average comprehensive water quality index was 0.38 and compliance rate of the first class seawater standard was 93.59%.In addition,the compliance rates of Pb,P,Zn were low to 53.85%,73.1% and 96.15% respectively.The content of DIN,P,DO and Chl.a in December were significantly higher than that in September.The water quality in the experimental area and the buffer area of the Nature Reserve were better than that of the core area.The qualitative evaluation result of the comprehensive water quality of the Nature Reserve was superior.The nutrient content in the seawater nearby Kanggang station was relatively high,especially the average standard reaching rate of phophate was only 73.1%.Accordingly,it was necessary to strengthen the monitoring of aquaculture nearby Kanggang sea area and reducing the discharge of aquaculture wastewater.So that we can keep sea water clean and facilitate the protection of the rare marine organisms and their habitats in the Nature Reserve.