CAJ | 학술논문

采用流量过程变异程度、高流量频率、高流量历时偏差、岸坡稳定性、栖息地类型多样性、底质类型多样性、河岸植被覆盖度、垂向透水性等8项指标对向家坝蓄水前后长江上游珍稀特有鱼类国家级自然保护区部分关键河段的物理完整性进行了评价研究。结果表明：赤水河的物理完整性远高于长江干流，长江干流的3个河段中江津段的物理完整性较高，其次是宜宾和合江；向家坝蓄水前后，高流量频率、高流量历时偏差、栖息地类型多样性、垂向透水性等4项指标差异较大；向家坝蓄水对保护区关键河段水文过程，特别是脉冲流量及其持续时间、底质中值粒径和水深、流速的分布等具有一定程度的影响。研究结果可为长江上游干支流物理完整性评价提供借鉴。
채용류량과정변이정도、고류량빈솔、고류량력시편차、안파은정성、서식지류형다양성、저질류형다양성、하안식피복개도、수향투수성등8항지표대향가패축수전후장강상유진희특유어류국가급자연보호구부분관건하단적물리완정성진행료평개연구。결과표명：적수하적물리완정성원고우장강간류，장강간류적3개하단중강진단적물리완정성교고，기차시의빈화합강；향가패축수전후，고류량빈솔、고류량력시편차、서식지류형다양성、수향투수성등4항지표차이교대；향가패축수대보호구관건하단수문과정，특별시맥충류량급기지속시간、저질중치립경화수심、류속적분포등구유일정정도적영향。연구결과가위장강상유간지류물리완정성평개제공차감。
The physical integrity of key reaches of the National Nature Reserve for rare and endemic fishes in the upstream of Yangtze River is assessed in consideration of eight indicators,inclusive of flow process variability,high flow frequency,high flow duration deviation,bank slope stability,habitat type diversity,sediment type diversity, riparian vegetation coverage and vertical permeability.Results show that the physical integrity of the Chishui River is much higher than that of the mainstream Yangtze River.And among the three reaches of mainstream Yangtze River,Jiangjin reach has high physical integrity,followed by Yibin reach and Hejiang reach.Moreover,four indi-cators (high flow frequency,high flow duration deviation,habitat type diversity,vertical permeability)vary greatly before and after the impoundment of Xiangjiaba dam which affects the hydrological process of the key reaches,es-pecially the indicators of pulse flow and its duration,median diameter in sediment,and distribution of water depth and velocity.