Inventory of apparent nitrogen and phosphorus balance and risk of potential pollution in typical sloping cropland of purple soil in China—A case study in the Three Gorges Reservoir region

2017 ◽  
Vol 106 ◽  
pp. 620-628 ◽  
Author(s):  
Wenjuan Ouyang ◽  
Zhe Li ◽  
Jing Liu ◽  
Jinsong Guo ◽  
Fang Fang ◽  
...  
Keyword(s):  
Three Gorges Reservoir ◽  
Purple Soil ◽  
Three Gorges ◽  
Nitrogen And Phosphorus ◽  
Phosphorus Balance ◽  
The Three Gorges Reservoir ◽  
The Three Gorges ◽  
Three Gorges Reservoir Region ◽  
Potential Pollution

Research of Compressibility of Purple Soil in the Three Gorges Reservoir

2014 ◽  
Vol 1010-1012 ◽  
pp. 622-625 ◽  
Author(s):  
Shi Feng Guan ◽  
Zhen Yao Xia ◽  
Lin Lin Zhang ◽  
Yi Chen
Keyword(s):  
Moisture Content ◽  
Three Gorges Reservoir ◽  
Compression Modulus ◽  
Purple Soil ◽  
Three Gorges ◽  
Soil Slope ◽  
The Three Gorges Reservoir ◽  
The Three Gorges ◽  
Three Gorges Reservoir Region ◽  
Compressible Soil

Ecological restoration of soil slope has become an important content in the three gorges reservoir region. Based on the compression test of purple soil in the three gorges reservoir region, analyzed the index of compressibility, reflected the compactness of the different moisture content of purple soils, provided theoretical guidance for the ecological slope protection. Results of the trial indicated that the purple soils are the high-compressible-soil; the void ratio of purple soil reduces obviously with the increase of moisture content; with the increase of moisture content, the compression coefficient first increases and then decreases, and the compression index decreases gradually; but the compression modulus does not show a similar trend, it's minimum on the moisture content of 14%.

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