|Table of Contents|

The spatial-temporal pattern dynamics of the water environment in Panjiakou–Daheiting Reservoir(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2016 06
Page:
1082-1088
Research Field:
Publishing date:

Info

Title:
The spatial-temporal pattern dynamics of the water environment in Panjiakou–Daheiting Reservoir
Author(s):
CHEN Yong1 2 ZHANG Min1** QU Xiaodong1 WANG Baimei3 & ZHU Longji3
1Department of Water Environment, China Institute of Water Resources and Hydropower Research, Beijing 100038, China 2College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China 3Water Resource Protection Bureau of Haihe River Basin, Tianjin 300170, China
Keywords:
drinking water source Beijing-Tianjin-Hebei water environment spatial-temporal patterns nutrients
CLC:
X524
PACS:
DOI:
10.3724/SP.J.1145.2016.01012
DocumentCode:

Abstract:
Panjiakou–Daheiting Reservoirs (Pan-Da Reservoir) are the important drinking water source of Beijing-Tianjin-Hebei area. Understanding the water environment of the reservoirs is of great significance to guarantee water supply security. In this study, we analyzed the spatial-temporal pattern dynamics of the water environment in Pan-Da Reservoir using the method of single-factor evaluation, based on the observations from 2006 to 2014. The results showed that total nitrogen (TN) and total phosphorus (TP) were the main pollutants in the reservoir. At present, TN concentration was generally below class V criteria according to GB3838-2002 Surface Water Environment Quality Standard; TP concentration was generally nearly class V; the other parameters were not over class III. Spatially, nitrogen and phosphorus nutrients showed a decreasing trend from the upper to the lower reach, indicating that the nutrients of the reservoir were mainly influenced by the pollutants input from the upstream. In the downstream, the pollution aggravated in Daheiting Reservoir due to the new pollutants input from Xiachi and Saheqiao areas. Temporally, TN concentration showed an increasing trend in Panjiakou Reservoir before 2011, but decreased gradually after that, while TN concentration in Daheiting Reservoir decreased from 2012. TP concentration displayed an overall increasing trend for the two reservoirs, though that in Daheiting Reservoir first decreased slowly from 2011 to 2013 then increased to a high level in 2014. Ammonia nitrogen concentration did not show any obvious temporal rules, and generally met the class II water criteria. Nitrate nitrogen concentration showed a similar trend to TN concentration. The permanganate index increased year by year, though never over the class III criteria. Dissolved oxygen was always within the class I criteria. In general, nitrogen and phosphorus pollution is deteriorating year by year in Pan-Da Reservoir. The water environment factors except total nitrogen presents a rising trend from Saheqiao to Daheiting Reservoir, due to the upstream pollution and the new pollutants input from Xiachi and Saheqiao.

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Last Update: 2016-12-30