哈巴河土著特有鱼类优先保护等级的定量研究

在野外调查和查阅历史资料的基础上,运用濒危系数、遗传价值系数和物种价值系数对哈巴河15种土著特有鱼类进行优先保护顺序的定量研究。结果表明:达到一级急切保护的有哲罗鱼和细鳞鱼2种,占所研究物种总数的13.3%;达到二级急切保护的有北极茴鱼和阿勒泰杜父鱼2种,占所研究物种总数的13.3%;达到三级急切保护的有贝加尔雅罗鱼、北方花鳅、小体高原鳅、江鳕、河鲈5种,占所研究物种总数的33.3%;尚未达到急切保护的有阿勒泰鱼岁、尖鳍鮈、银鲫、北方须鳅、新疆高原鳅、粘鲈6种,占所研究物种总数的40.0%。该研究结果较为真实地反映了哈巴河地区鱼类的受威胁状态和优先保护顺序。

Quantitative assessment on priority conservation of the autochthonous fish species in Haba River

Based on the field investigation and known data,the priority conservation of the autochthonous fish species in Haba River was quantitative analyzed by using the threatened coefficient,the genetic coefficient and the species value coefficient.The results showed that two species(Hucho taimen Pallas,Brachymystax lenok Pallas) reached the first-class protection,and accounted for 13.3%;Two species(Thymallus arcticus Pallas,Cottus sibiricus altaicus Li et Ho)reached the second,and accounted for 13.3%;Five species(Leuciscus leuciscus baica-lensis(Dybowski),Cobitis granoei Rendahl,Triplop-hysa(Hedinichthys) minuta(Li),Lota lota Linnaeus,Perca fluviatilis Linnaeus) reached the third,and accounted for 33.3%;Six species(Phoxinus phoxinus ujmonesis Kaschtschenko,Gobio gobio acutipinnatus Men’schikov,Auratus gibelio(Bloch),Barbatul abarbatula nuda(Bleeker),Triplophysa(T.) strauchii(Kessler),Acerina cernua(linnaeus)) reached the fourthdid not reachimpatient protection,and accounted for 40.0 %.The priority preservation sequence was more truly reflected by the evaluation and rating results from this evaluation system.