Advanced Materials Research Vols. 726-731

Abstract: Geological landscape is a kind of important tourism resources whose survey is the forerunner of tourism resource planning and development. The application of remote sensing technology develops a revolution of investigation method of geological landscape tourism resources. By analyzing domestic and international investigations and researches of remote sensing of geological landscape tourism resources, this paper considers that remote sensing technology is mainly applied to the investigation of regional geological environment background. The macro characteristics of regional geological landscape tourism resources such as resources area, type identification, dynamic change, space layout, formation lithology, topography distribution are hot research issues, and the analysis and measurement of micro characteristic values of regional geological landscape tourism resources is an important direction of future research.

Abstract: Based on the physical models of PROSPECT, SAIL and porosity model, hyperspectral data and canopy coverage data of different combined scenes were simulated. According to the simulated data, we chose four sensitive bands and four sensitive vegetation indexes highly correlated to vegetation canopy coverage, and analyzed the correlation between sensitive bands, sensitive vegetation indexes and canopy coverage. Then we built a regression model of canopy coverage with EVI highly correlated with canopy coverage. At last, we verified this model by experimental data from ground measurement experiment. It shows that there is a high correlation between EVI and canopy coverage and the regression model built by EVI can produce an effective result and the RMSE is less than 0.09.

Abstract: Starting from terrain analysis, this paper uses GIS space analysis technology, through constructing study frame of mountain city complex terrain, to state how to conduct the effective utilization and reasonable reformation to complex terrain, and put forward the new vertical design method of mountain city complex terrain, and combined with the vertical design in new Dali Haidong District planning to prove.

Abstract: Ocean salinity is one of the important parameters in marine ecosystem and climate system. Satellite-borne microwave radiometer observing system is the only feasible method to study the distributions and changes of the global ocean salinity. Numbers of factors make a great impact on the sea salinity inversion accuracy based on the microwave radiation technology. These factors include the sea surface temperature, distribution range of the salinity, the observation angle, polarization, as well as the microwave frequency of the microwave radiometer. The present paper analyzed the effect of microwave frequency, incidence angle and polarization mode on the sensitivity of the ocean salinity based on the microwave radiation simulated data of calm see surface. Furthermore, it studied the effect of the seawater temperature and salinity distributions on the salinity sensitivity. The results indicated that the sensitivity between the ocean surface microwave radiation and the water salinity decreased with increased microwave frequency; the influence of the incident angle on the sensitivity is related to the polarization mode. The sensitivity increased with the increasing of the incident angle under V-polarization mode, however, the sensitivity decreased under H-polarization mode. The water temperature had an effect of amplification on the sensitivity. The higher the temperature of water is, the stronger the sensitivity is. However, the changing trend of the sensitivity was not related with the polarization, frequency, and incident angle.

Abstract: Land use change has major impact on goods and services which environment supplies for society. However, field scale monitoring schemes for ecosystem services or ecosystem values are missing, proxy based indicators can assess the historic development of ecosystem services and values. In this study, we use land use data from 2000 to 2010 to show at the example of the historic ecosystem service values development in Hulunbeier grassland. The regional assessment shows an overall trend for degradation of ecosystem service values from 2000 to 2010.

Abstract: This paper is to propose a method of ecological carbon sink regionalization in the view of GHG (greenhouse gas) emission reduction, which could provide scientific theory basis for development and utilization of urban land resources, ecological environment construction, biodiversity conservation, the industry layout and formulation of the regional sustainable development strategy. Based on the existing researches foundation, this study takes Shenzhen as a typical case to put forward a method for carbon sink regionalization of urban land use with further quantitative evaluation of ecosystem carbon storage (density), carbon sources/sinks function and carbon sink potential of Shenzhen city. The results show that: Shenzhen ecological carbon sink is regionalized into six categories 55 regions, including 15 intensive carbon sink regions, 17 medium carbon sink regions, 10 weak carbon sink regions, 4 carbon neutral regions, 5 medium carbon source regions and 4 intensive carbon source regions.

Abstract: Some eco-environmental factors are analyzed by RS, and population and GDP spatial distribution are obtained from statistical data. By combining AHP methods for determining weights, comprehensive index method is used to evaluate the eco-environmental quality of Yellow River Delta (YRD) on three scales: raster, administrative region, and delta. Results show that: Eco-environmental quality of YRD lies in moderate level. In three terms (1996, 2000, 2004), it was the best in 1996, and decreased to the worst in 2000, and then increased in 2004. In the delta, Estuary area and Dongying area were poorer than Guangrao county and Liji county.

Abstract: Using GXH-3051A infrared analyzer, the paper monitored the seasonal variations of soil CO₂ emission fluxes of four land use types with the dynamic closed chamber method in western Jilin Province and analyzed the driving mechanism. The result shows that the soil dynamic changes of paddy field, dry farmland, grassland and saline-alkali land present multi-peak curves, but the means of emission fluxes exist large differences. Temperature and moisture are the main factors leading to the differences of CO₂ emission fluxes. There is a significant exponential relationship between the dynamic changes of CO₂ emission fluxes and soil temperature, but the exponential relationship is poor between the dynamic changes of CO₂ emission flux and moisture. Hydrothermal two-factor composite model can explain the dynamic changes of CO₂ emission fluxes well, which illustrates the change of CO₂ emission fluxes of 65.47% of paddy soil, 76.25% of dry farmland, 82.17% of grassland and 57.62% of saline-alkali soil.

Abstract: The article analyses and predicts the hydrodynamic feature of Zhifu bay on the basis of Ecomsed model, thus the calculation accuracy is improved. And then it predicts erosion-deposition characteristics of the study sea area. The paper assesses the influence of the sea wall backout in aspects of hydrodynamic and erosion-deposition environment. Simulating results show that the velocity of flow will increase after the sea wall backout and the ability of water exchange will be improved gradually. Research shows that the deposition-dominating areas are located at the north and east of study area, while the southeast side area is dominated by erosion. The accretion tendency will weaken in south of study area together with the accretion thickness 1cm/a annually, while the accretion thickness is 5cm/a in southeast of study area.

Abstract: Different types of reclaimed land require different land reclamation techniques. This study uses previous research to divide the mining areas in China into 10 land reclamation zones according to the climatic zones, soil conditions and the distribution of mines. The country is divided into the following zones: the northeast plains and hills region, the Huang-Huai-Hai Plain region, the Yangtze River Basin region, the southwest mountainous and hilly region, the central mountainous and hilly region, the southeast coast hilly region, the northwest arid semi-arid region, the Loess Plateau region, the Inner Mongolian grasslands region, and the Tibetan Plateau region. The subsided, excavated and occupied lands in the mining areas are divided into two categories, suitable for reclamation and unsuitable for reclamation, based on geological and geomorphological characteristics, climate, hydrology, soil conditions, and social demand. In addition, the suitability of waste land in each area is evaluated. This study provides a basis for waste land reclamation in Chinas mining areas.