THE EFFECT OF INCREASED NITROGEN LEVELS ON SOIL CO2 EMISSION CAUSED BY MICROBIAL RESPIRATION IN THE RIPARIAN ZONE OF THE THREE GORGES RESERVOIR

The riparian zone of the Three Gorges Reservoir (TGR) has experienced substantial erosion that may severely deteriorate the reservoir ecosystem. To calculate soil erosion characteristics, field investigations have been conducted in the TGR area and 12 erosion-monitoring transects have been set in the middle TGR. The results showed that the dominating drive forces are water wave, gravity and surface runoff. In summer when the reservoir ran at lower water levels, wave erosion led to bank instability and bank collapses. Simultaneously, due to a number of heavy storms, surface runoff erosion was also severe. In other seasons when the reservoir ran at relative higher levels reaching the highest level in winter, water wave prevailed due to the wide range of water surface and heavy waterway transportation. Soil erosion was the most severe in the mainstream where higher frequency and intensity of waves occurred. The rates of wave erosion were around 37 mm/year with the highest being 53 mm/year, and surface runoff erosion was up to 15 mm/year in the main stream riparian zone.

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Spatiotemporal variations of CO2 fluxes in aCynodon-dominated riparian zone of the Three Gorges Reservoir (TGR), China

Journal of Plant Ecology ◽

10.1093/jpe/rtx054 ◽

2017 ◽

Vol 11 (6) ◽

pp. 877-886 ◽

Cited By ~ 1

Author(s):

Wenli Zhang ◽

Jiquan Chen ◽

Ju Liu ◽

Fangqing Chen ◽

Quanfa Zhang ◽

...

Keyword(s):

Three Gorges Reservoir ◽

Riparian Zone ◽

Co2 Fluxes ◽

Three Gorges ◽

Spatiotemporal Variations ◽

The Three Gorges Reservoir ◽

The Three Gorges

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Fingerprinting Sources of the Sediments Deposited in the Riparian Zone of the Ruxi Tributary Channel of the Three Gorges Reservoir (China)

10.5772/intechopen.85208 ◽

2019 ◽

Author(s):

Zhonglin Shi ◽

Dongchun Yan ◽

Anbang Wen ◽

Yongyan Wang

Keyword(s):

Three Gorges Reservoir ◽

Riparian Zone ◽

Three Gorges ◽

The Three Gorges Reservoir ◽

The Three Gorges

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Analysis on Geomorphology Change of Yangtze River Tributaries after the Impoundment of Three Gorges Reservoir - Set the Xiaojiang River in Chongqing China as Example

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.105-107.1406 ◽

2011 ◽

Vol 105-107 ◽

pp. 1406-1410

Author(s):

Xin Hou ◽

Kai Wang ◽

Xiao Qing Wang

Keyword(s):

Yangtze River ◽

Three Gorges Reservoir ◽

Riparian Zone ◽

Local Features ◽

Three Gorges ◽

The Yangtze River ◽

River Channels ◽

The Three Gorges Reservoir ◽

The Three Gorges

After the impoundment of the Three Gorges Reservoir, geomorphology of the Yangtze River tributaries changed greatly. The Xiaojiang River in Chongqing is a representative tributary because of the unique local features on geographical conditions, hydrology conditions, migration and riparian zone. It is significant to explore and analyze the geomorphology change of the Xiaojiang River after the impoundment of the Three Gorges Reservoir for studying the feature of the Xiaojiang River channels. In this paper the geomorphology change law of the Xiaojiang River was calculated and analyzed based on the 2D Hydrodynamic and sediment models, and a few suggestions for protecting, developing and managing the Xiaojiang River are made from the conclusion of the analysis.

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