Risk Evolution of Ship Oil Spill in the Three Gorges Reservoir Area

Ship oil spill accident will lead to enormous hazards in the Three Gorges Reservoir area. The risk mitigation of the ship oil spill is significant to the stakeholder of the maritime safety administration. To study the risk evolution of the ship oil spill in the Three Gorges Reservoir area, the framework of ship oil spill risk evolution was proposed according to the general definition of the risk; then, risk evolutions were analyzed from the perspectives of expected probability, system constraints of accident developing, and possible harmful consequences based on accidents analyses, simulation experiments, and structural equation model analysis. The results indicate that the system constraints of accident developing, such as the quantity of oil spills, free evolution time, and wind and flow conditions, have significant impacts on risk evolution of the ship oil spill after the occurrence of an accident in the Three Gorges Reservoir area.

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Research on Key Technologies and Development of Three-Dimensional Demonstration Platform for Oil Spill Response Simulation in the Three Gorges Reservoir Area

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.462.209 ◽

2012 ◽

Vol 462 ◽

pp. 209-214

Author(s):

Shu Zhe Chen ◽

Li Wen Huang

Keyword(s):

Oil Spill ◽

Three Gorges Reservoir ◽

Three Dimensional ◽

Three Gorges Reservoir Area ◽

Three Gorges ◽

Reservoir Area ◽

The Three Gorges Reservoir ◽

The Three Gorges ◽

Key Technologies ◽

Oil Spill Response

Three-dimensional demonstration platform for oil spill response simulation in the Three Gorges reservoir area established the oil spill response three-dimensional displaying system including the two-dimensional GIS platform on the basis of environmental dynamic prediction model, oil spill model, GIS and virtual reality technology. The platform for oil spill response simulation in the Three Gorges reservoir area development process and put study emphases on the key technologies. It can provide decision-making basis for pollution emergency disposal in the Three Gorges reservoir area. It also has important significance to improve the level of water environment pollution prediction.

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Effects of Landscape Positions and Landscape Types on Soil Properties and Chlorophyll Content of Citrus in a Sloping Orchard in the Three Gorges Reservoir Area, China

Sustainability ◽

10.3390/su13084288 ◽

2021 ◽

Vol 13 (8) ◽

pp. 4288

Author(s):

Siyue Sun ◽

Guolin Zhang ◽

Tieguang He ◽

Shufang Song ◽

Xingbiao Chu

Keyword(s):

Soil Properties ◽

Chlorophyll Content ◽

Three Gorges Reservoir ◽

Slope Position ◽

Three Gorges Reservoir Area ◽

Three Gorges ◽

Reservoir Area ◽

The Three Gorges Reservoir ◽

The Three Gorges ◽

Landscape Types

In recent years, soil degradation and decreasing orchard productivity in the sloping orchards of the Three Gorges Reservoir Area of China have received considerable attention both inside and outside the country. More studies pay attention to the effects of topography on soil property changes, but less research is conducted from the landscape. Therefore, understanding the effects of landscape positions and landscape types on soil properties and chlorophyll content of citrus in a sloping orchard is of great significance in this area. Our results showed that landscape positions and types had a significant effect on the soil properties and chlorophyll content of citrus. The lowest soil nutrient content was detected in the upper slope position and sloping land, while the highest exists at the footslope and terraces. The chlorophyll content of citrus in the middle and upper landscape position was significantly higher than the footslope. The redundancy analysis showed that the first two ordination axes together accounted for 81.32% of the total variation, which could be explained by the changes of soil total nitrogen, total phosphorus, total potassium, available nitrogen, available potassium, organic matter, pH, and chlorophyll content of the citrus. Overall, this study indicates the significant influence of landscape positions and types on soil properties and chlorophyll content of citrus. Further, this study provides a reference for the determination of targeted land management measures and orchard landscape design so that the soil quality and orchard yield can be improved, and finally, the sustainable development of agriculture and ecology can be realized.

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