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For several decades the remote sensing change detection methods for depicting land cover have gained a great achievements, and the artificial intelligence techniques have being applied to remote sensing data processing and show great potential. Ant colony optimization (ACO) and Particle swarm optimization (PSO) as the two main algorithms of swarm intelligence, and because of the self-organization,...
The major method of water quality monitoring was sampling in the scene at present in China. In response to the problems such as weak sampling capability of water quality, untimely data processing and so on, based on GPRS technology, the design scheme of an automatic water quality monitoring system is proposed. The system utilizes the water quality monitor to process the sample and send the relevant...
Radar remote sensing technology has become an important method for stable and long-time rice monitoring for its capability to operate in all weather conditions. In this paper, the obtained main achievements on rice monitoring using ENVISAT ASAR data were reviewed and major results were summarized. The results showed that the multi-temporal and multi-polarization radar data has advantages in rice monitoring,...
"Anti-planning" Methodology advocates that the urban planning should first consider the land for others but not for construction.The fast urbanization of China leads to growing increasingly tense between people and land, such as land used for construction and agriculture, economic development and ecological environment. Under the circumstances, this paper discussed the necessity and feasibility...
Land use is one of the most mainly factors that causing the carbon emission. In order to analyze the effects of land use pattern on carbon emission, using data from Panyu District of Guangzhou City, the authors calculated the carbon emission which is influenced by different land use patterns. The results indicated that carbon emission is significantly diverse according to different land use patterns,...
Lake water is an essential renewable resource for mankind and the environment and it is important for civil drink water supply. Shitoukoumen reservoir, one of the most important drink water supplies, is taken as examples to assess the water quality by multi-temporal Landsat TM/ETM data. The multiple scattering model within the water is applied to simulate the radiative transfer for retrieval of the...
This study aims to investigate the application of multimedia technology into college English teaching in China. Combining computer technology development with language teaching theories, the paper explores the aspects and extent to which multimedia technology is used in college teaching, probes the limitation and barriers to the use of multimedia technology, and finally discusses the possible improvement...
The core of Changzhutan Megalopolis region was the research object in this paper. Based on the source data of multitemporal RS image and Used by the method of RS&GIS analysis technology, the author analyzed driving Force and spatial evolution of Changzhutan Megalopolis in Recent 20 Years Results show that Chang-zhu-tan Megalopolis land area expanded nearly 2 times, especially after 2007 developed...
The result of high-amplitude growth of consumption and the low-amplitude growth of production intensified the contradiction between supply and demand of crude oil, which requires a large amount of crude oil imported from abroad to meet the domestic consumption needs. Due to the fact that the forecast of the shipping import volume is an imperative component in our energy security system, this paper...
Results of the GPS-Reflection (GPS-R) coastal experiment in the southeast of China were given. The experimental campaign began in September 2006 and its succeeding observation was kept until March 2007. Through the ocean reflected events recorded by the Oceanpal instrument, direct and reflected correlation waveforms were obtained. Then the sea surface parameter Significant Wave Height (SWH) was retrieved...
In this study, four scenes of Landsat ETM+ images covering Nanjing area were selected to analyze the spatial of Urban Heat Island(UHI) in different seasons. The Land Surface Temperatures(LST) were retrieved from the calibrated images. The results showed that there were large LST variation in different seasons, LST varied from 8°C to 45°C.The UHI in Nanjing displayed remarkable seasonal pattern, with...
Wuhan city is the core city of Wuhan city circle and the major city of the Yangtze River, and the change of water have attracted great attention. Using the techniques of "3S" and landscape ecology, based on 1991 and 2009 Landast TM remote sensing image, integrating with the change of water modeling, transform matrix, the shift of gravity centers and landscape pattern analysis software Fragstats3...
The urban environment quality is of vital importance as the majority of people now live in cities. Due to the continuous urbanization and industrialization in many parts of the world, metals are continuously emitted into the urban environment and pose a great threat on human health. In this study, a total of 38 soil samples were collected from Weinan industrial urban areas, NW, China, and the concentrations...
The Chlorophyll-a (Chl-a) concentrations in water is of great importance for the monitoring of water quality and ecosystem balance. Remote sensing offers a convenient and systematical tool for the observations of water at a long time scale. In this paper, we present a study of Chl-a estimation using the reflectance models (MOD3 and MOD2) derived from the Medium Resolution Spectral Image (MERSI) onboard...
Two phases of remote sensing image data of Dandong city taken respectively in 1989 and 2001 were interpreted through ERDAS 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. The results showed that the construction land was dominant and expanding tendency was obvious with glebe,...
In this paper, a algorithm of airborne SAR Direct Geocoding based on correction of airborne SAR systematic error including slant range measurement error and time delay is put forward to improve the positioning precise, and POS/PPP technique is used to obtain radar phase center position data taking into account work efficiency. Many factors result in airborne SAR positioning accuracy, but main of them...
Vegetation parameters are important to improve the performance of numerical weather prediction, global change monitoring, and ecosystem modeling. In the study, Discrete Anisotropic Radiative Transfer (DART) model is employed to simulate Bi-directional Reflectance Distribution Function (BRDF)of heterogeneous landscape scenes. The simulated BRDF is required to match the measured BRDF by the POLDER (POLarization...
This paper analyzed the temporal-spatial variations and the temporal-spatial responses of vegetation NDVI to the variations of temperature and precipitation in each ten-days period in the whole year, spring, summer and autumn covering 1998 to 2007 based on the SPOT VGT-NDVI data and daily temperature and precipitation data from 11 meteorological stations in Qilian Mountains. The results show that:...
Study is performed of the weekly cycle of temperature indices (its diurnal range, mean, maximum and minimum) based on 1996-2005 surface observations from four big cities over the Yangtze River Delta of China. Results suggest that these temperature variations are featured by significant weekend effect (WE) in that these temperatures are higher at weekends than on workdays in summer as opposed to those...
With continuous increase of carbon emission, China is facing more and more pressure from international community. However, what is the driving force of China's carbon emission growth? Whether China's carbon emission should be borne by the Chinese people? Based on carbon accounting resulted from energy consumption, this paper quantitativly analyze the effect of exports on carbon emission using China's...
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