Advanced Materials Research Vols. 807-809

Abstract: The application of lianas to uban vertical planting has become increasingly important as a focus of urban environmental and landscape management. The objective of this study was to analyze the lianas application in Haizhu district, Guangzhou city. The study showed its disadvantages of lack of more spieces, simplicity of application form, poor study of physiological and ecological characteristics and lack of management in lianas of urban greening which was attributed to low important focus on lianas appliaction in the last decades in this district. A few pieces of advice were put foward to improve the situation. It is expected that more lianas green spaces will provide environmental services and landscape beauty.

Abstract: Landscape perception, attitude and its impact on humans are the topics of modern geography study. Taking the grassland of central Inner Mongolia Autonomous Region as an example, the perception and attitude of grassland tourism landscape and their relations are analyzed by components analysis and multiple regression analysis. It is revealed that tourists perceive grassland landscape from three dimensions: national culture, tourism hospitality and natural landscape. All of the tourists' assessment for the perception and attitude to grassland tourism landscape are positive. The analysis of the relationship between tourists landscape perception and attitude showed that only seven out of twenty landscape perception items influence tourists' landscape image, satisfaction, recommendation intention and the willingness to revisit. The article verified that selectiveness was one of the most important characteristic of tourism landscape perception. Thus the advantage and disadvantage factors in the development of tourism destination could be distinguished according to the assessment of the landscape perception. As a result of the research, the demand of the tourism market has been made so clearer that it will provide a useful reference to the healthy development of grassland tourism industry.

Abstract: Ascendency theory which is developed by Ulanowicz is an index of activity and organization in living systems and is about to quantify the whole-system status. Being calculated in terms of flows, the ascendency is used to quantify the eutrophication of the ecosystem. However, when network magnitudes and topologies are changed from non-eutrophic to strongly eutrophic, the ascendency which is calculated in terms of flows of simple energy is relatively insensitive to such changes. However, when the flows are measured in terms of eco-exergy, it is more advisable. The ascendancies of two different trophic levels which are non-eutrophic and strongly eutrophic are calculated on simple energy and eco-exergy respectively. The analysis of ascendency about the two different trophic levels also proves that ascendency is more sensitive when based on eco-exergy than on simple energy. The ascendency based on eco-exergy is more appropriate to quantify the ecosystem status.

Abstract: The comprehensive trophic level index has been applied to assess eutrophication status of QiXing Wetland. The five subzones of QiXing Wetland with different vegetation pattern have different eutrophication status. The comprehensive trophic level index is mainly affected by TN and TP at high concentration of nitrogen and phosphorus. Therefore, the plant communities can significantly influence on eutrophication status of the wetland through removing nitrogen and phosphorus in water. Three mainly dominant plants in wetland are Phragmites australis, Nelumbo nucifera and Typha orientalis Presl. The ability to remove nitrogen and phosphorus of these three plant communities were investigated. Typha orientalis Presl community has the maximum efficiency in removing nitrogen and phosphorus in water. Therefore, Typha orientalis Presl is more suitable for the purification of the water.

Abstract: Based on the remote sensing data and meteorological data of MODIS, this paper studied the water conservation capacity of different land use type of the ecotone of the forest and grassland in Hulun Buir with the help of the ArcGIS software. The results shows that the average of the water conservation capacity of 11 years of the whole ecotone of the forest and grassland in Hulun Buir is 62.78×108m³/yr. Among of these, the forest land accounts for 69.37% of the total water conservation capacity, and the grassland, the cultivated land and the unused land account for 23.36%, 3.67% and 3.60%. And the water conservation capacity of the four land use types presented a fluctuated improving trend. The average water conservation capacity in each year of the unit area of the ecotone achieved its maximum value, 498.43m³/hm² ,in 2003, and achieved its minimum value,193.03m³/ hm²,in the year of 2007.

Abstract: In this paper, the indexes that are used to assess the influence of road construction on Inner Mongolia grassland have been proposed based on the environment protection perspective. The Analytic hierarchy process was employed to evaluate the importance of different indexes regarding to influence. These indexes would be used to provide information for decision making about road construction in order to achieve the sustainable development of grassland.

Abstract: Profits, as one of the ultimate goals of business operations, plays a crucial role in business decision making process. Based on the negative correlation between warehousing costs and distribution costs, this paper introduces urban development coefficient and identifies the cost-effective distance of transport (CEDT) for urban distribution centers using quantitative calculation method and qualitative analysis including center of gravity model. In addition, with land availability and urban traffic control measures as related constraints, this paper identifies the locations of urban distribution centers and conducts an empirical analysis using Jiujiang City of Jiangxi Province as an example.

Abstract: This paper analyzes the factors including geological factors, imaging factors must be considered when extract Remote Sensing image linear-circular structure. And summarizes six criterions to recognize and distinguish the types of linear-circular structures. These criterions successful applied to extract Landsat ETM+ image linear-circular structures in Bainiuchang silver Polymetallic deposit.

Abstract: The traditional means of mineral resource management is backward, to this problem, The paper put forwards the mineral resource management information system based on GIS , the system is established by GIS and database technology. From the following aspects discuss the design and realization of the system , such as system requirement analysis, the design of system database and function modules,the realization of the system function,The system can effectively improve the management level and lay a foundation for mineral resources information.

Abstract: How to estimate regional economic development level is important for solving regional inequality problems. Most of previous studies on regional economic development are based on the statistics collected typically in administrative units. This paper has analyzed the defects of traditional studies, and attempted to research regional economic development problems with 10-year DMSP/OLS nighttime light satellite imagery as a new data source. For exploring the relationship between DMSP/OLS nighttime light data and GDP, different types of curve fitting regression models have been tried, the Cubic model has shown the best performance with a coefficient of determination (R²) equal to 0.803. Based on this positive correlation, we have estimated provincial economic development level of China using DMSP/OLS nighttime light data. The research results have indicated that the DMSP/OLS nighttime light data can well reveal provincial economic development levels.