Changes in Streamflow Regime Due to Anthropogenic Regulations in the Humid Tropical Western Ghats, Kerala State, India
文献类型：期刊论文
| 作者 | ABE George ; ERINJERY JOSEPH James |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2015-03 |
| 卷号 | 12期号:2页码:456-470 |
| 关键词 | Range variability approach Hydro-electric projects Humid tropics Flow regime changes Inter-basin regulation Intra-basin regulation |
| ISSN号 | 1672-6316 |
| 通讯作者 | ABE George |
| 英文摘要 | Regulation of streamflow by a reservoir creates a flow regime much different from the pre-impoundment period flow regime. Hydro-Electric Projects (HEPs) commissioned in the Western Ghat regions of the Kerala State, India during the last four decades caused considerable changes in the flow regimes of the rivers of the Kerala State in southwest India. In this paper, the Indicators of Hydrologic Alteration (IHA) approach proposed by Richter et al. (1996) is used to analyze flow regime changes in the Periyar and Muvattupuzha Rivers, due to the construction of the Idukki (1976), Idamalayar (1987) and Lower Periyar (1997) HEPs in the high ranges of the Western Ghats. Normal rainfall years (annual rainfall values within mean ± 0.75 standard deviation limits) are only considered in the analysis to focus on hydrologic alterations due to human activities. The mean hydrologic alteration in the Periyar River (deviation from the pre-development hydrologic indicator values) after commissioning of three HEPs is 35%. Inter-basin water transfer after power generation from the Idukki HEP resulted in a higher discharge in the adjacent Muvattupuzha River, leading to considerable changes in the hydro-environment (mean hydrologic alterations varying between 57 to 63%). IHA parameters showing hydrologic alterations above the 67th Percentile were further analyzed. For each of the pre-construction hydrologic parameters ± 1 standard deviation from the mean is set as the upper and lower management target limits. The values of each IHA parameter beyond these targets are considered as non-attainment. Considerable hydrologic alterations are observed, especially for low flows in both basins. Inter-basin transfer induced larger changes in flow parameters compared to intra-basin regulations. The study shows that under a proper water release and diversion scheme, the non-attainment of IHA parameters (values fall beyond the target limits) can be reduced. The findings of the study will be greatly beneficial to regional water management and restoration of an eco-environmental system in the humid tropical region. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/7981]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2015_Vol12 No.2 |
| 推荐引用方式 GB/T 7714 | ABE George,ERINJERY JOSEPH James. Changes in Streamflow Regime Due to Anthropogenic Regulations in the Humid Tropical Western Ghats, Kerala State, India[J]. Journal of Mountain Science,2015,12(2):456-470. |
| APA | ABE George,&ERINJERY JOSEPH James.(2015).Changes in Streamflow Regime Due to Anthropogenic Regulations in the Humid Tropical Western Ghats, Kerala State, India.Journal of Mountain Science,12(2),456-470. |
| MLA | ABE George,et al."Changes in Streamflow Regime Due to Anthropogenic Regulations in the Humid Tropical Western Ghats, Kerala State, India".Journal of Mountain Science 12.2(2015):456-470. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。