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Construction of habitat suitability models(HSMs)for benthic macroinvertebrate and their applications to instream environmental flows:A case study in Xiangxi River of Three Gorges Reservior region,China
Fengqing Li; Qinghua Cai; Xiaocheng Fu; Jiankang Liu
2009
Source PublicationProgress in Natural Science
ISSN1002-0071
Volume19Issue:3Pages:359
AbstractBased on a long-term ecological monitoring, the present study chose the most dominant benthic macroinvertebrate ( Baetis spp.) as target organisms in Xiangxi River, built the habitat suitability models (HSMs) for water depth, current velocity and substrate, respectively, which is the first aquatic organisms model for habitat suitability in the Chinese Mainland with a long-term consecutive in situ measurement. In order to protect the biointegrity and function of the river ecosystem, the theory system of instream environmental flow should be categorized into three hierarchies, namely minimum required instream flow (hydrological level), minimum instream environmental flow (bio-species level), and optimum instream environmental flow (ecosystem level). These three hierarchies of instream environmental flow models were then constructed with the hydrological and weighted usable area (WUA) method. The results show that the minimum required instream flow of Xiangxi River calculated by the Tennant method (10% of the mean annual flow) was 0.615 m 3 s ?1 ; the minimum instream environmental flow accounted for 19.22% of the mean annual flow (namely 1.182 m 3 s ?1 ), which was the damaged river channel flow in the dry season; and 42.91% of the mean annual flow (namely 2.639 m 3 s ?1 ) should be viewed as the optimum instream environmental flow in order to protect the health of the river ecosystem, maintain the instream biodiversity, and reduce the impact of small hydropower stations nearby the Xiangxi River. We recommend that the hydrological and biological methods can help establish better instream environmental flow models and design best management practices for use in the small hydropower station project.
Language英语
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35555
Collection淡水生态学研究中心_期刊论文
Affiliation中国科学院水生生物研究所
Recommended Citation
GB/T 7714
Fengqing Li,Qinghua Cai,Xiaocheng Fu,et al. Construction of habitat suitability models(HSMs)for benthic macroinvertebrate and their applications to instream environmental flows:A case study in Xiangxi River of Three Gorges Reservior region,China[J]. Progress in Natural Science,2009,19(3):359.
APA Fengqing Li,Qinghua Cai,Xiaocheng Fu,&Jiankang Liu.(2009).Construction of habitat suitability models(HSMs)for benthic macroinvertebrate and their applications to instream environmental flows:A case study in Xiangxi River of Three Gorges Reservior region,China.Progress in Natural Science,19(3),359.
MLA Fengqing Li,et al."Construction of habitat suitability models(HSMs)for benthic macroinvertebrate and their applications to instream environmental flows:A case study in Xiangxi River of Three Gorges Reservior region,China".Progress in Natural Science 19.3(2009):359.
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