小隴山林區(qū)魚類資源現狀調研

打開文本圖片集

中圖分類號：S931.1 文獻標志碼：A 文章編號：1004—6755（2025）06-0060—04

Investigation on current situation of fish resources in Xiaolongshan forest region

ZHANG Yan，ZHOU Jie

（Gansu Province Xiaolongshan Forestry Pest Control and Quarantine Station，Tianshui 74lO2o，China）

Abstract：A systematic investigation was conducted on the current status and conservation challenges of fish re sources in the Xiaolongshan forest region. Through standardized sampling methods including netting，angling， market purchases，and interviews with local residents，anglers，and wildlife protection authorities，6l fish species were documented，belonging to 1 class，5 orders，6 families，and 46 genera. Cypriniformes dominated（57 species， 93.44% ），while Salmoniformes，Synbranchiformes，Perciformes，and Siluriformes each comprised 1 species （1.64% .The community consisted primarily of small一sized fish with pronounced seasonal dynamics，showing peak species richness and biomass in late summer/early autumn and minimal levels in winter/spring. Spatial analysis revealed northern areas and the Wei River Basin had lower diversity compared to southern zones and the Jialing River Basin.Key conservation concerns include widespread but low一density populations and severe habitatfragmentation，highlighting the need for targeted management strategies in this ecologicallysignificantregion. Kev words：Xiaolongshan forest area： fish resources： threaten

魚類資源是維持淡水生態(tài)系統穩(wěn)定的關鍵生物類群，掌握區(qū)域魚類資源現狀以及面臨的威脅，既是保護生態(tài)系統的前提，也是區(qū)域生物多樣性評估的關鍵指標[1]。（剩余3140字）