Advanced Materials Research Vols. 807-809

Abstract: The objective of this study was to explore the water and nitrogen coupling use efficiency and optimal control of water and nitrogen environment, Pot experiment was conducted in intelligent greenhouse, and the interactive impact of water and nitrogen on ecological characteristics and water use of arabica coffee was investigated. Using four irrigation levels, i.e. sufficient irrigation (SI, soil moisture content was 75%~85% of soil field capacity), light deficit irrigation (DI1, soil moisture content was 65%~75% of soil field capacity), medium deficit irrigation (DI2, soil moisture content was 55%~65% of soil field capacity) and serious deficit irrigation (DI3, soil moisture content was 45%~55% of soil field capacity), and four fertilizer levels of N, i.e. high nitrogen (N_H), medium nitrogen (N_M ), low nitrogen (N_L), non-nitrogen (N_N). The results showed that increase of irrigation or N rate was helpful to improve the ecological and morphological index of arabica coffee (plant height, basal stem, leaf area and shoot length). Compared to the N_N treatment, N application could increase dry mass accumulation and water use efficiency (WUE) by 10.88%~37.49% and 24.73%~33.01% respectively. Compared to the DI3 treatment, increase of irrigation could increase dry mass accumulation and WUE by 82.54%~163.27% and 34.40%~39.66% respectively. Low nitrogen combined sufficient irrigation treatment could promote morphological characteristics of arabica coffee seedling and ensure higher dry mass accumulation and WUE simultaneously.

Abstract: The paper aims to study the typical environmental impact of coal gangue around Pingdingshan area and proposes some measure to protect environmental. The paper collects mass data and field surveys in order to analysis the impact on the environment. The paper analyzed its environmental impact respectively from four stages: from production to transport to a gangue dump, gangue piled up, coal gangue sold and transport, coal gangue comprehensive utilization. And it proposed relevant suggestions to reduce pollution specific to each stages. Finally, considering the environmental protection and commercial value, proposed a method, called Assignment Coefficient method, to find a best way to utilize the coal gangue. The best way is to produce cement, bricks. Finally it put forward seven words to protect and manage the environment: "reduction", "airtight", "selection", "prevention", "excellent", "new", "legislation".

Abstract: China's industrialization and modernization process is actually the development process of high-carbon economic. But the economic structure of the high consumption and low output of is not conducive to the sustainable development of China's economy. Against this background, the paper is to develop a low-carbon economy of the path as a research object. The paper includes three parts: necessity of developing low-carbon economy, measures to promote low-carbon development, and the industrial path of achieving objectives. The study demonstrate gradually our country's development about low-carbon's economic, expecting to obtain a certain degree of referential significance that can help to build low-carbon society and achieve the upgrading of industrial structure.

Abstract: Starting with the illogical reality that with the improvement of corporate environmental management, the nature environment is getting worse, we empirically studied the relationship between environmental management and corporate financial performance. We choose the listed companies that published social, environmental or sustainable reports during 2010 and 2011 as a study sample. The Spearman correlation was used in SPSS 20. Through content analysis, we found that symbolic approach will benefit the CFP, while substantive approach did not show significant effect.

Abstract: This paper made the accounting and analysis of the Green GDP of He nan Province 2005-2010 based on the SEEA system. The results shows that the resources depletion cost presented upward trend in recent years, in which the proportion of the depletion cost of the water resource is getting smaller, and that of the mineral resource is getting bigger; the environmental improvement cost increased in the year 2005-2007,and then presented downward trend in the following years. For the proportion of the improvement cost, the waste water takes the biggest, the waster gas takes the second and the solid waste takes the smallest. The Green GDP increased with the increasing of traditional GDP. Green GDP takes over 93.80% of the traditional GDP and the proportion is stable, but is a little decreased compared with that of 2005.

Abstract: The study set up the model of per capita GDP and the environmental index based on the Environmental Kuznets Curve (EKC) with the support of SPSS software and the 2003-2011 economics and environment data of Puyang City. And the result shows that the environmental Kuznets Curve (EKC) of industrial wastewater discharge and industrial sulfur dioxide emissions both display inverted U-shape; and just across the turning point, the discharge present downward trend with the increasing of per capita GDP; while the EKC of industrial fumes emissions display positive U-shape, and its emission present upward trend first and then downward with the increasing of per capita GDP. It shows that the environmental problems of Puyang City has partly improved, but has not been fully restrained. The main reasons are unreasonable industrial structure, single dominated industy and relatively low investment on environmental improvement.

Abstract: CCS (Carbon Capture and Storage) is the only technology available to achieve a deep cut in CO₂ emissions from large-scale fossil fuel usage. Although Guangdong Province has less heavy industries and higher reliance on energy import compared with many other provinces in China, CCS is still essential for the low-carbon development in the province. This is because fossil fuel energy is now and will be in the foreseeable future the major energy in Guangdong. CCS may have other benefits such as helping energy security and bring new business opportunities. The feasibility of CCS development in Guangdong is ensured by the existence of sufficient CO₂ storage capacity in offshore sedimentary basins in the northern South China Sea. A safe CO₂ storage is achievable as long as the selection of storage sites and the storage operations are in restrict quality control. The increased cost and energy penalty associated with CCS could be reduced through technical R&D, the utilization of captured CO₂, and the utilization of infrastructure of offshore depleted oil fields. Fossil fuel energy plus CCS should be regarded as a new type of clean energy and deserves similar incentive policies that have been applied to other clean energies such as renewables and nuclear.

Abstract: This paper determines population, GDP, the proportion of secondary industry, energy structure, science and technology progress and energy price as the main influence factors on carbon emissions according to the scholars research results. To analysis the relationship between carbon emissions and influence factors, multi-regression equation of carbon emissions and influence factors is established based on the data of Hebei Province from 1995 to 2010. According to the data of influence factors of carbon emissions from 1995 to 2010, the paper respectively establishes each simple regression equation and forecasts its future values. Based on the predictive value of influence factors and multi-regression equation, the paper forecasts the carbon emissions and the carbon emissions of the reducing of the proportion of secondary industry in different circumstances . The conclusions can offer the decision basis for reducing carbon emissions.

Abstract: Torrefaction was a main pretreatment technology for improving the properties of biomass in order to deal with such problems as dispersed resource,High moisture content, High bulk volume and low heating value. This paper discussed torrefied temperature, time on thermal and infrared spectrum curve effect of Salix baking carbonand analysed DSC curve of Salix torrefied coal. The resultsshowed that the themal value was higher, with the temperature was increasing faster and the timewas longer, Meanwhile, the number of solid oxygencontaining functional groups in the solid product reduced.The significantly decreasing of the oxygen content improved the heat value of solid products.orrefaction was benefit to the improvement of energy property and material characteristicsof biomass and had a positive effect on the quality of biomass material．

Abstract: The CO₂ storage in saline aquifers possess large storage potential, required less well numbers, low storage costs, less geographical restrictions, etc, it has widespread attention of environmental protection workers at home and abroad. Through the mechanism of CO₂ storage in saline aquifers research shows that the form of CO₂ storage in saline aquifers was divided into free gas and irreducible gas. Through the application of CMG software to simulate the geological model, the results showed that the diffusion coefficient has a minimal impact on CO₂ safe storage. When choose storage reservoir, high porosity, high permeability, low vertical and horizontal permeability ratio is the first choice.