雅鲁藏布江下游德尔贡河流域土著鱼类濒危程度及优先保护次序定量分析
李洪池 , 贺凯 , 扎西拉姆null , 龚君华
高原科学研究 ›› 2025, Vol. 9 ›› Issue (4) : 18 -24.
雅鲁藏布江下游德尔贡河流域土著鱼类濒危程度及优先保护次序定量分析
Quantitative Analysis on Endangered Status and Priority Conservation Ranking of Native Fish Species in Dergong River Basin of the Lower Reaches of Yarlung Zangbo River
该研究以2022—2024年雅鲁藏布江下游德尔贡河流域渔业资源调查数据为基础,选取物种珍稀性、物种价值和人为干扰3个评价系数以及9个二级指标,建立综合评价体系,对德尔贡河流域10种土著鱼类的优先保护次序进行了定量分析,依据评分标准确定了各物种的综合评分及保护等级。根据综合评价分值,德尔贡河流域的10种土著鱼类优先保护等级次序分别为:平鳍裸吻鱼(Psilorhynchus homaloptera)的综合评价分值最高,为Ⅰ级优先保护鱼类;墨脱新光唇鱼(Neolissochilus hexagonolepis)和藏鰋(Exostoma labiatum)为Ⅱ级优先保护鱼类;平唇鮡(Parachiloglanis hodgarti)、墨脱纹胸鮡(Glyptothorax annandalei)、墨脱裂腹鱼(Schizothorax molesworthi)、弧唇裂腹鱼(Schizothorax curilabiatus)、西藏墨头鱼(Garra Kempi)、黄斑褶鮡(Pseudecheneis sulcatus)为Ⅲ级优先保护鱼类;浅棕条鳅(Nemacheilus subfuscus)为Ⅳ级优先保护鱼类。该研究结果较为客观地反映了德尔贡河流域土著鱼类的保护价值,所确定的优先保护次序和等级结果与实际调查结果吻合,可为该流域的土著鱼类保护与可持续利用提供科学依据。
A comprehensive evaluation system was establish for determining the endangered status and priority conservation of native fish base on fishery resource data from year 2022 to 2024 of Dergong River Basin in the lower reaches of the Yarlung Zangbo River, and scoring 3 evaluation coefficients and 9 secondary indicators selected. The priority protection order of 10 native fish species in the Dergong River Basin was quantitatively analysed to determine comprehensive score and protection level of each species. According to the comprehensive evaluation score, the priority protection order of 10 native fish species is as follows: Psilorhynchus homaloptera has the highest comprehensive evaluation score and is classified as priority protection of level I; Neolissochilus hexonolepis and Exostoma labiatum are classified as priority protection of level II, Parachiloglanis hodgarti, Glyptothorax annandalei, Schizothorax molesworthi, Schizothorax curilabiatus, Garra Kempi and Pseudecheneis sulcatus are classified as priority protection of level III. Nemacheilus subfuscus is under priority protection of level IV. The research results objectively reflect the conservation value of native fish in the Delgon River Basin. The result of determined priority protection order and level is consistent with the actual investigation result, which can provide a scientific basis for the protection and sustainable utilization of native fish in this basin.
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