Enhanced potential ecological risk induced by a large scale water diversion project
Enhanced potential ecological risk induced by a large scale water diversion project
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大规模引水工程引发的潜在生态风险加大
DOI：
10.1007/s00477-020-01861-6
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发表时间：
2020-08
影响因子：
4.2
通讯作者：
Jianyun Zhang
中科院分区：
文献类型：
--
作者：
Yu Meixiu;Paul Wood;Nick van de Giesen;Xiaolong Liu;Qiongfang Li;Guoqing Wang;Jianyun Zhang
通过水库建设对河流进行治理是对全球河流系统自然流动状况和生态健康的最大挑战之一。丹江口水库（DJK）是汉江上最大的水库，于1967年开始运行。该水库于2012年进行了升级改造，为穿越中国中部的南水北调工程提供水资源。然而，目前尚未研究汉江水库改造后（坝高和库容增加）对下游水文状况和生态健康的影响。对1950 - 2017年汉江干流沿线4个站点（含上游站点）的日流量序列进行了研究。根据水库运行阶段的不同，将研究系列分为3期：(1)1950 ~ 1966年、(2)1967 ~ 2012年和(3)2013 ~ 2017年。研究了不同时期的水文变化性质、生态流量需求和潜在生态风险。结果清楚地表明，DJK水库对汉江中下游的水文状况产生了显著的影响，其中最显著的变化发生在水库的直接下游。随着库容的增加，黄家岗观测到的“变异性范围法”水文指标均未落在预期范围内。导致生态流量需求得不到保证，生态亏缺频率和强度增加。大坝下游的河流生态系统在考虑大坝后时期处于生态系统退化的高风险中。
River regulation by the construction of reservoirs represents one of the greatest challenges to the natural flow regime and ecological health of riverine systems globally. The Danjiangkou (DJK) Reservoir is the largest reservoir on the Hangjiang River and commenced operations in 1967. The reservoir was upgraded in 2012 to provide water resource for the South–North water transfer project through central China. However, the effect of the reservoir operations on the downstream hydrological regime and ecological health of the Hanjiang River following the upgrade (increase in dam height and reservoir capacity) has not been examined thus far. The daily discharge series from four stations along the main stem of the Hanjiang River, including a site upstream, were examined from 1950 to 2017. The study series was divided into three periods based on the difference stages of the reservoir operation: (1) 1950–1966, (2) 1967–2012 and (3) 2013–2017. The nature of hydrological alteration, ecological flow requirement and potential ecological risk during the different periods were investigated. The results clearly indicate that the DJK reservoir has significantly modified the hydrological regime in the middle and downstream section of the Hanjiang River, with most significant modifications recorded immediately downstream of the reservoir. None of the observed ‘Range of Variability Approach’ hydrological indicators fell within the expected range at Huangjiagang following the increase in reservoir capacity. As a result, the ecological flow requirements could not be guaranteed, and the frequency and intensity of ecodeficit increased. The river ecosystem immediately downstream of the dam was observed to be at high risk of ecosystem degradation during the post-dam periods considered.
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丹江口水库对中国汉江生态水文条件的影响评估
影响因子：
3.8
作者：
Wang, Yuankun;Wang, Dong;Wu, Jichun
通讯作者：
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使用 Copula 进行干旱分析
影响因子：
2.4
作者：
Chen, Lu;Singh, Vijay P.;Guo, Shenglian;Mishra, Ashok K.;Guo, Jing
通讯作者：
Guo, Jing
DOI：
--
发表时间：
2000
期刊：
--
影响因子：
--
作者：
Medha Patkar;The Wcd Commissioners
通讯作者：
Medha Patkar;The Wcd Commissioners
影响因子：
2.4
作者：
Meixiu Yu;Qiongfang Li;Guobin Lu;Tao Cai;W. Xie;Xue Bai
通讯作者：
Meixiu Yu;Qiongfang Li;Guobin Lu;Tao Cai;W. Xie;Xue Bai
影响因子：
4.3
作者：
Z. Xu;K. Takeuchi;H. Ishidaira;X. W. Zhang
通讯作者：
Z. Xu;K. Takeuchi;H. Ishidaira;X. W. Zhang