NDLI: Eutrophication in the newly built Laohutan Reservoir during the initial impoundment period: the role of nutrient loading

Content Provider	Springer Nature Link
Author	Zhu, Liqin Jiang, Cuiling Zhang, Peng Li, Dongmei Zhu, Xiuquan
Copyright Year	2015
Abstract	The purpose of this study was to elucidate the role of nutrient loading played in the eutrophication of newly built reservoirs. Taking the Laohutan Reservoir as an example, field monitoring and laboratory experiments were conducted before and after the reservoir impoundment. According to the results, the Laohutan Reservoir was eutrophicated 4 months after its impoundment, since nutrient loading played an important role. Riverine inputs were found to be the major source of nutrients, with the contribution of greater than 72 %. Nutrients from soil were also influential during the first 20 days. Its release was gradually weakened by the routine operations of the reservoir. The release patterns of nutrients from the four main land-use types of soil (forest, bamboo groves, paddy and construction sites) were similar, but their influence to the reservoir water quality varied dramatically. And the atmosphere was also an important source of nutrients, especially nitrogen. Meanwhile, by a comparison, the Laohutan Reservoir to an older one located nearby, the newer with relatively lower trophic levels underwent a cyanobacteria bloom, while there was none in the older. It verified that new reservoirs were more prone to eutrophication than the older, and high nutrient loading is a necessary but not sufficient condition for eutrophication. The fragility of the new reservoir’s ecosystem accelerated water environment deterioration, and resulted in the eutrophication and cyanobacteria bloom during the initial impoundment period.
Starting Page	4803
Ending Page	4812
Page Count	10
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	74
Issue Number	6
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-05-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Eutrophication Nutrient loading; Initial impoundment New reservoir Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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