Bioindicator Assessment Framework of River Ecosystem Health and the Detection of Factors Influencing the Health of the Huai River Basin, China
文献类型：SCI/SSCI论文
| 作者 | Xia J. |
| 发表日期 | 2014 |
| 关键词 | River ecosystem health Multistep gray correlation method Multivariable analysis Huai River Basin water-quality management redundancy analysis diversity models index macroinvertebrates biodiversity communities populations responses |
| 英文摘要 | River ecosystem health assessments are a hot topic in global water resources management. The Huai River Basin is a representative basin faced with serious environmental problems due to high water pollution and numerous water projects. Comprehensive investigation of the factors affecting river ecosystem health is an urgent precursor to the successful management of the Huai River Basin. Based on a series of aquatic ecosystem indicators, monitoring, and standards, such as phytoplankton, zooplankton, and benthic macroinvertebrate data, an assessment framework of river ecosystem health is proposed using a multistep gray correlation evaluation method. Environmental impact factors including climate, land cover, edaphic factors, hydrology, water projects, and water quality were identified using the Kruskal-Wallis test and distance-based redundancy analysis method. The ecosystem was found to be subhealthy with 44% (31=71) of sites in a healthy condition, 51% (36=71) subhealthy, and 5% (4=71) unhealthy. Climate and hydrology were the dominant factors that together contributed 37.5, 24.1, and 6.9% of the variation in phytoplankton, zooplankton, and benthic macroinvertebrates, respectively. The main variables affecting variation were minimum temperature, relative humidity, solar radiation, and the magnitude, frequency, duration, and timing of monthly runoff. Together, these variables explained 24.5% of the variation in the ecosystem health of the whole river. Thus, to improve river ecosystem health in the basin, the regulation of dams and sluices should give priority to ecological outcomes, and the threat of climate change should not be underestimated. This paper provides a blueprint for ongoing ecological monitoring and restoration programs in China, and is expected to be a successful case and reference to transition from water quantity management to river health management in the Huai River Basin. (C) 2014 American Society of Civil Engineers. |
| 出处 | Journal of Hydrologic Engineering |
| 卷 | 19 |
| 期 | 8 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1084-0699 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29504]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Xia J.. Bioindicator Assessment Framework of River Ecosystem Health and the Detection of Factors Influencing the Health of the Huai River Basin, China. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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