Advanced Materials Research Vols. 962-965

Abstract: This paper take the signalized intersection of Erdos Street-South of Xilinguole Road in Hohhot as an example, by collecting traffic data of intersections, use the improved gray clustering evaluation model to evaluate atmospheric environmental impact from signalized intersection traffic flow. The evaluation results are in line with the actual situation and measures are proposed for improving intersection atmospheric environment.

Abstract: Thermal power industry is one of the six biggest carbon emissions industries in China. Researchers did innumerable studies in reducing carbon emissions of thermal power plants (TPP). However, most studies are focused on the calculation and prediction of China's total carbon emissions, while few studies are focused on specific TPP carbon emissions. There are 3 parts in developing this paper; first, the main ideas of the project life cycle’s calculation methods, construction periods and operation periods are summarized. Secondly, Intergovernmental Panel on Climate Change (IPCC) carbon emission factor mode, practical measurement mode, mass conservation mode and quantifying mode are discussed in detail. This paper aims to determine the optimal development path for thermal plants through the detailed discussion of the existing research results of a specific TPP project’s carbon emissions issue.

Abstract: CO₂ saline aquifer storage has large potentials, which is one of the promising options for mitigating carbon dioxide emissions into the atmosphere. Chinese storage potential assessment is in its infancy. This paper reviews the research of the storage potential evaluation in China. Based on the two mechanisms of structure trapping and solubility trapping, the formula is analyzed and obtained to calculate the storage potential. We select 23 main continental basins and 9 main sea basins in China, then calculate that saline aquifer storage potential is 1914.79 Gt in Chinese main basins, among which the continental storage potential is 1341.07 Gt and the off-shore storage potential is 573.72 Gt. This research provides basic data for the implementation of the saline aquifer storage in China.

Abstract: The global change and terrestrial ecosystem (GCTE) is an important research issue in research of global climate change , and terrestrial Ecosystem carbon sequestration is one of the main content of the study. In this paper, ecosystem carbon sequestration capacity calculation and trend analysis of Guangxi Province were made based on the data of remote sensing inversion, for the study of the main ecosystem carbon fixed quantity of spatial distribution and change of Guangxi province over the past 10 years (2000-2010). The results indicated that the ecosystem carbon fixed amount of Guangxi region present high on all sides and low in the center , the spatial distribution of carbon is mainly depends on the spatial distribution of vegetation ecosystem, as the areas of artificial vegetation carbon stocks are generally lower than that of carbon stocks in mountain areas. The amount of carbon fixed showed a general trend of increase from 2000 to 2010.

Abstract: As the advancement of urbanization, the role of city as the main driver of economic development has become increasingly apparent. However, city also has increasingly become the main body of energy consumption and greenhouse gas emissions. The construction of low-carbon city becomes a new way of urban development. This study analyzes the current development of low-carbon city development at home and abroad, and sum up experiences to provide references for the low-carbon development of other domestic cities.

Abstract: To investigate how reclamation of wetlands in three different soil types impacts the vertical distribution of soil organic carbon (SOC) content in soil profiles, contents and density of soil organic carbon (SOC) in soil profiles of three types of wetland soils in wetland, soybean and paddy field in Sanjiang Plain were determined. Both soybean and paddy field were reclaimed from wetland. We observed that reclamation significantly reduced SOC content in 0-10,10-20 and 20-30 cm soil layers in meadow albic soil and meadow marsh soil, and 0-10,10-20,20-30 and 30-40 cm soil layers in peat bog soil, there were no significant difference in SOC contents in soil layers under 0-30 or 0-40 cm before and after reclamation. After reclamation, SOC density in three types of wetland soils decreased, and SOC density in soybean field were higher than that in paddy field. Either in wetlands or farm lands in the three types of wetland soils, most of the SOC storage in 0-100 cm soil layer was stored in 0-50 cm soil layer. Though wetland reclamation reduced the SOC content, it hasn’t changed the regularity of SOC vertical distribution. The relationships between SOC content and soil depth in wetlands and farm lands all could be described by exponential functions in three types of soils. The specific functions are useful to estimate and predict the regional SOC pool by models.

Abstract: Large topography can affect the global climate change significantly. Many studies have revealed that the altitude of the Tibetan Plateau (TP) is related to the Asian regional climate. In order to find how the global-scale atmospheric circulation changes in response to the TP uplift in summer, a fully coupled model, Community Earth System Model (CESM), was used in this paper. Four experiments were run with the altitude of TP set to 25%, 50%, 75%, and 100% of the modern height, respectively (referred to as TP25, TP50, TP75, TP100 experiments). The results show that the uplift of the TP causes the change of the subtropical circulation over the northern hemisphere as well as the southern hemisphere. In the TP25 experiment, the South Asian High (SAH) at the 150mb is comparatively weak, and with the elevated surface heating, the vertical motion in the middle troposphere strengthens greatly. The ascending air over the TP leads to the forming and sustaining of the SAH, a dominate subsystem of the upper troposphere. The perturbation of the SAH propagates in the upper troposphere and stimulates stronger planetary waves on the globe and it also affects the circulation in the low level atmosphere. The subtropical highs over seal level strengthen over the Southern Ocean as well as the North Pacific and Atlantic Oceans. Furthermore, the westerlies around the Antarctica become stronger with the increasing altitude of the TP. This is meaningful that the stronger westerlies may be a forcing to accelerate the Cenozoic global cooling during the geological history.

Abstract: This study has carried out the economic impact of output by industry in Beijing, making meteorological factors as a productivity input with capital, and labor. It has showed that the industry Output is combined with precipitation and temperature. For example, whenever the temperature increased by 1%, the primary industry output will be increased by about 2.99% and whenever the precipitation increased by 1%, the tertiary industry output will be increased by about 0.10%. The climate change has different effect on the secondary industry and the tertiary industry, both of which are more serious than the primary industry in Beijing.

Abstract: The linkage of the South Asian High (SAH) to the southern annular mode (SAM) during the boreal summer is addressed. The results show that the SAH correlated well with the Southern Hemispheric subtropical high (SSH) and SAM, which exhibits that their recent positive trends are associated with each other. During the positive SAH anomalies years, roughly speaking, the sea level pressure (SLP) and the zonal surface wind (u10) are analogous to that of the positive SAM phase, but they also show an anomalous zonal-wave-3-like (ZW3-like) pattern over the mid latitudes. The surface temperature (ST) variations are not similar to the SAM. Nevertheless, these changes are related with the anomalous cyclones and meridional surface wind (v10). The relationship between the SAH and SAM is also a manifestation of the interhemispheric interaction, and this study contributes to the understanding of the global change.

Abstract: The allocation principle of greenhouse gas emission reduction responsibilities decides the effective of abatement program, but it is the most controversial problem in climate negotiation. Three common principles are compared in this paper, with the conclusion that allocation according to per capita and allocation according to grandfathering will not be accepted by the whole world, although common but differentiated responsibilities between developed and developing countries can not form a grand abatement coalition, it can effectively control the rise of temperature, and the impact to each countries’ economy is the smallest among the three principle.