The ecological flow of the middle and lower reaches of the Lancang River based on priority protection fishes identification

PENG Wei; LIU Bingjun; QIU Jiangchao; ZENG Hui; ZHANG Mingzhu; LI Dan

doi:10.13471/j.cnki.acta.snus.2020.03.005

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The ecological flow of the middle and lower reaches of the Lancang River based on priority protection fishes identification

更新时间：2023-12-11

- The ecological flow of the middle and lower reaches of the Lancang River based on priority protection fishes identification
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 59, Issue 3, Pages: 43-50(2020)
- 作者机构：
  
  1. 中山大学地理科学与规划学院,广东,广州,510275
  2. 华南地区水循环与水安全广东省普通高校重点实验室,广东,广州,510275
  3. 中山大学土木工程学院,广东,珠海,519082
  4. 广州市水务科学研究所,广东,广州,510220
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2020.03.005
  CLC：
- Published：2020，
  
  Published Online：25 May 2020，
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PENG Wei, LIU Bingjun, QIU Jiangchao, et al. The ecological flow of the middle and lower reaches of the Lancang River based on priority protection fishes identification. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 59(3):43-50(2020)
DOI：

PENG Wei, LIU Bingjun, QIU Jiangchao, et al. The ecological flow of the middle and lower reaches of the Lancang River based on priority protection fishes identification. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 59(3):43-50(2020) DOI： 10.13471/j.cnki.acta.snus.2020.03.005.

摘要

河道内维持合理的生态流量，以满足水生生物生境需求，是其生态系统健康的重要保障。选取澜沧江中下游为研究区，构建了基于风险系数、干扰系数和价值系数3个维度的河道优先保护鱼类评估方法，识别了该地区优先保护鱼类；基于河道内流量增量法，选取水力生境适宜性指数及高/中/低适宜生境面积比例作为生境适宜度评估指标，建立其与流量的关系曲线，研究了该地区优先保护鱼类产卵期和成年期的适宜生态流量，结果表明：1）澜沧江中下游优先保护等级最高的鱼类为中国结鱼；2）中国结鱼产卵期和成年期最适生态流量分别为2 100 m

/s和1 200 m

/s，适宜生态流量范围分别为1 700~3 300 m

/s和800~1 500 m

/s，计算结果介于Tennant法很好-最大等级之间。

Abstract

Maintaining reasonable ecological flow in the river to meet the needs of aquatic habitats is an important guarantee for the health of its ecosystem. In this paper

the middle and lower reaches of the Lancang River is selected as the study area

and the river priority conservation species fishes assessment method is constructed based on three dimensions of risk coefficient

disturbance coefficient and value coefficient

then the priority protected fishes in this area are identified. Based on Instream Flow Incremental Methodology

hydraulic habitat suitability index and high/medium/low suitable proportion were selected as habitat suitability assessment indicators

and the relationship curve between them and the flow was established to study the suitable ecological flow of priority protected fishes in spawning and adulthood. The results show that: 1) the fish with the highest priority protection level in the middle and lower reaches of the Lancang River is

Tor sinensis

2) the optimum ecological flows of

Tor sinensis

in the spawning and adult stages are

2 100 m

and 1 200

/s respectively

and the suitable ecological flow ranges are

1 700~3 300 m

and

800~1 500 m

respectively

the results are between good and maximum levels of the Tennant method.

关键词

优先保护鱼类栖息地法生态流量澜沧江

Keywords

priority protection fisheshabitat methodecological flowLancang River

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Related Institution

Nanjing Hydraulic Research Institute， State Key Lab of Hydrology andWater Resources and Hydraulic Engineering Science



China Institute of Water Resources & Hydropower Research

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