腾冲地区鱼类资源现状调查

Investigation on the Current Situation of Fish Resources in Tengchong Region

摘要: 该研究于2023年4月至11月期间，对云南省腾冲地区伊洛瓦底江水系的三个主要支流(龙川江、大盈江、槟榔江)进行了鱼类资源调查。研究团队通过在8个采样断面进行标本采集，并结合走访当地从业人员，共鉴定出鱼类34种。研究发现，尽管腾冲地区的鱼类资源总量尚可，但土著鱼类多样性已明显下降，传统名优经济鱼类资源减少，且鱼类群落呈现出小型化和外来物种增多的趋势。文章将资源变化的主要原因归结为生境破坏、过度捕捞和外来物种入侵。

Abstract: From April to November 2023, a comprehensive fish resource survey was conducted on the three principal tributaries—Longchuan River, Daying River, and Binglang River—of the Irrawaddy River system in Tengchong, Yunnan Province. Utilizing specimens collected from eight sampling sites and incorporating insights from interviews with local practitioners, the research team successfully identified 34 distinct fish species. The findings indicate that while the overall fish resource quantity in Tengchong remains relatively satisfactory, there has been a notable decline in the diversity of indigenous fish species, coupled with a reduction in populations of traditional, high-value economic fish. Additionally, the fish community is undergoing a trend of miniaturization and an increasing presence of invasive species. The study attributes these resource changes primarily to habitat degradation, overfishing, and the encroachment of invasive alien species.