Analysis of Ecological Environment Characteristics and Species Diversity Dynamic Changes of Restored Mangroves under the Semi-natural Pond-to-mangrove Model
Mangroves are one of the most biodiverse and productive ecosystems on Earth,an ecological barrier against disasters such as typhoons,tsunamis and storm surges,and essential habitats for numerous fish,shrimps,crabs,shellfish,insects and birds.The Zhubijiang estuary wetland in Changjiang County,Hainan Province,was used as the study object,and the research on the ecological environment and the flora and fauna communities was carried out from May 2021 to October 2023.Mangrove species diversity was evaluated using the Shannon-Wiener index,Simpson index and Pielou evenness index,and correlation analysis was performed with Canoco 5.0.The results showed that the nitrate nitrogen and active phosphate content in the water body showed a decreasing trend with the increase of the years of pond retreat,and the semi-natural pond retreat mode improved the water environment quality to a certain extent.The diversity of benthic fauna and fish showed a decreasing and then an increasing trend at each pond retreat stage,and the species diversity and ecosystem function of the pond retreat area were improved to a certain extent.The water temperature and sediment pH were significantly correlated with the mangrove species diversity index,and more attention should be paid to the mangrove restoration process in the future.
Pond-to-mangroveMangroveBiodiversityEnvironmental factorHainan Island
维普
万方数据
