Advanced Materials Research Vols. 955-959

Abstract: Benign coordinating relations can promote sustainable use of land resources and improve of the ecological environment quality and excessive exploitation and utilization of the land resources will only aggravate the ecological environment vulnerability and further restrict the sustainable development and utilization of the land resources. This paper, from the perspective of basic current situation of Xinjiang, by using the coupling evaluation model and principal component analyze, on the basis of coupling relationship, studies both the degree of coupling relationship and the influence mechanism and analyzes the dynamic evolution process of development and utilization of land and ecological environment in 2000 ~ 2010,. The results of the study show that: (1) the development of land use intensity and ecological environment shows fluctuation state on the whole. Although environment has been improved in recent two years, but both the coordinated development is still faced with great pressure. (2) The dynamic evolution relationship between the development of land use and ecological environment does not meet the long-term equilibrium relationship and the ecological and environmental benign condition is not obviously. presented This paper holds that: adhering to synchronization of the development of land use and ecological environment improvement, and sustaining relatively stable operation mechanism of ecological environment can maintain the sustainable development of regional economy.

Abstract: The serious eco-environmental hazard affecting hilly city have appeared. we should input more investment into environmental protection, and develop green technology and recycling economy. In order to guarantee ecological security, the countermeasures for ecological infrastructure construction are put forward, establishing the green space system including suburban forest, farmland and green space, recovering wetland ecosystem, optimizing industrial structure and urban spatial distribution, and developing recycling economy, establishing ecological infrastructure monitoring network and information forecast system, carrying out ecological management.

Abstract: Three phases of remote sensing image data of Yalu-river estuary wetland taken respectively in 1983、1995 and 2007 were interpreted though ARCGIS software and the change of landscape pattern was analyzed with three categories of indices from the landscape pattern and landscape levels by means of using FRAGSTATS software. Results show that the 1983-2007, the research area of wetland landscape changes drastically, wetland landscape made of natural wetlands to artificial wetland, wetland fragmentation degree deepening, artificial wetland distribution area expanded. During the study period, the influence of human activities on the wetland increase and increase in area of sea aquaculture is the main cause of the yalu estuary wetland area reducing, is also one of the main reasons for the region function of wetland degradation.

Abstract: Construction of urban waterscape parks based on ecological concepts and functions is becoming the tendency of modern urban parks. Unfortunately, there are no suitable evaluation systems for these parks. This study establishes a comprehensive evaluation system for a landscape and its functions via the analytic hierarchy process and the comprehensive index method. The evaluation model consisted of 3 evaluation indexes and 23 evaluation indicators relevant to the landscape characteristics of Houtan Park of the World Exposition 2010 Shanghai, China. The evaluation indicators were monitored from 2006 to 2010, and the results of the investigation led to the following conclusions: the park fulfills a range of desirable functions, and ranks high in aesthetic, economic and societal values; ecological functions were applied well within the landscape, and following ecological restoration and the construction of a functional aquatic ecosystem, the water quality of Houtan River has been continuously purified from inferior class V~ class V to class III~ class I range, while the heavy metals in the sediment were improved from inferior class V~ class V to class I; the biodiversity was improved from 0.72 into 1.49; and the results for other indicators were improved overall. In general, the comprehensive score of the evaluation increased from 1.227 to 4.341. Although minor problems remain to be solved, the results indicate that the design concept and construction methods applied in Houtan Park are well applicable to sustainable landscapes, and the evaluation system as a whole can be extended and applied in similar cases.

Abstract: Functions of campus waterpront landscape mainly reflected in recreation, ecological and landscape art. Analyzes the problems of the destructed water quality, stiff shoreline, unparticipatable and can not reflect the ecological and cultural characteristics of the campus in a large number of campus waterpront landscape, intruducts the renovation and design principles of sustainability, viewable and participatable, and the Renovation and design methods of constructing the natural ecological revetment form, creating a free revetment shoreline, plant local plants on the revetment, and set hydrophilicity facilities.

Abstract: An application of GIS and the landscape pattern analysis software FRAGSTAS were used for research the changes of landscape structure nearly 14 years of Huihe basin in the hulunbuir prairie. The results show that, (1) from 1995 to 2010, cultivated land, grassland, basin forest area decreased, other land use type area were increased, and sand was the most obvious. From the grass internal structure change, low coverage in the grass and grassland area coverage in the proportion of total area decrease by 0.4% and 7.2% respectively in 14 years, and the high coverage grassland area ratio increases by 3.3%. Internal composition structure of forest land, the most significant change was shrubbery area, the area is reduced by 2.57%, the proportion of forestland of increased by 2.05%, and the proportion of open woodland area does not change significantly. (2) the land use type conversion frequently in basin area, large area and large proportion of the land use type conversion mainly in farmland, forest land, meadow and the sand. In the province, the main cultivated land into high, medium, and in the forest coverage grass, shrub and grass high coverage into cultivated land; Wetland overall increased; Sand of forest area into grass and open woodland, medium and low coverage grass coverage into the sand in the grass province. landscape pattern driving force analysis shows that the climate warming and human activities on the trend and rational use of natural resources, which lead the Huihe basin in the service function of ecological to degradation.

Abstract: This paper summarizes the two methods which are experimental research and numerical simulation to thermal environment of the tunnel. Then the latest developments of the thermal environment research at home and overseas are introduced. At last a simplified model of thermal environment of underground tunnel is established. Through CFD software, the radial temperature distribution of tunnel surrounding rock and the axial temperature distribution of air at winter and summer conditions are obtained which provide basis for further research on thermal environment.

Abstract: Based on the subjective questionnaire and field measurement of the physical environment about traditional folk houses indoor and outdoor,this topic chose three typical folk houses to analyze thermal comfort, indoor the wind field ,and temperature field , summarized the indoor ventilation problems existing in the traditional folk houses, explored the influence factors of indoor ventilation and thermal comfort. Poor indoor thermal comfort is mainly manifested as: the higher indoor temperature and the higher internal surface temperature of building envelope, and poor air flow indoor. It is one of important means for promoting the indoor thermal comfort and improving the indoor air quality of traditional folk houses by adopting appropriate building ventilation technology and effectively using natural ventilation.

Abstract: Creating comfortable wind environment is an important method to achieve the energy saving and emission reduction in campus. This essay proposes the compilation method of site plan in junior campus specifically located in the towns of Guangxi Province from building layout, interval, orientation, open space and road layout to optimize the wind environment with qualitative and quantitative analysis. The essay considers that (1) the combination form of building groups in campus should be based on the principle of reducing tropical island effect in summer and decreasing wind penetration in winter; (2) reasonable interval and orientations of buildings can contribute to optimizing campus atmospheric conditions; (3) optimal layout of open space in campus can accelerate the wind speeds in summer and block out wind in winter; (4) reasonable layout of major roads can improve the ventilated environment in campus. The results can be theoretically and practically significant to plan and build low-carbon campus.

Abstract: Takes a field measurement in traffic statistics, indoor and outdoor temperature and humidity, analyzes the thermal environment of the railway station waiting room of Xi’an. Investigates the thermal comfort status using ASHRAE seven sensation scales by questionnaires, survey the people’s satisfaction to the environment of waiting room.