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Texture in high resolution satellite images requires substantial amendment in the conventional segmentation algorithms. This study examined and evaluated the use of wavelet packet transforms for urban texture analysis and image classification in high spatial resolution LISS IV imagery, which provide more details of the urban areas. This paper analyzes the performance of the combination of Wavelet...
The open landscape spaces in city are important places for people's public activities. According to the general principles that govern the formation of climate, the study made a thorough exploration to the formation mechanism of micro-climate from the aspects of the ground surface, vegetation, water body, terrain etc., which combined particular environment of city, Further, illustrated how to obtain...
The original vegetation-based natural landscape has been gradually replaced by the artificial impervious surface because of the rapid expansion of urban space, it's of great significance to study the fraction of a city's impervious surface for quantitatively describing the heterogeneity of natural cover within the urban land and reasonable urban planning. Based on V-I-S (vegetation - impervious surface...
Land cover and land use classification with Remote Sensing (RS) image is used broadly in dynamic monitoring of land use. For the RS image classification, the method of BP neutral network with one single hidden layer has been widely used. But the traditional BP neutral network based on gradient descendent of error has low classification rate. It is not easy to converge and often get into local minimum...
Land resources are the foundation of existence and development of human being, its an important part of country resources. Urbanization and industrialization is very fast in Dalian City.In the process, too much agricultural land was transformed into construction land,which aggravated the contradiction between people and land.So how to achieve sustainable development and use of land resource, keep...
The land use and land cover changes have been issues for better understanding human-land relations and sustainable development of regional land sources. This paper was to analyze the land use and land cover changes in new land around Bohai bay with crisp ecosystem and fast development during last 20 years with RS and GIS taking Guangrao county as a case study. In this study, two Landsat TM images...
The urban heat island has affected humanity's life seriously. Thermal remote sensing provides a new method for observation and mechanism analysis of urban heat island. The paper analyzed space distributional rules and the cause of formation of urban thermal space in Chongqing by using Landsat ETM of 2001. The result indicates that there are four centers of heat island in Chongqing city, mainly in...
Land use and land cover change (LUCC) is an important factor of global environmental change. LUCC model is the focus of land change research. LUCC of the study area in the next 13 years is predicted based on CLUE-S model. Two prediction scenarios were used which are with or without considering “Liaoning Coastal Economy Development Plan”. The results showed that the construction land increased dramatically...
This study aims at revealing how land use and land cover changed in Nanjing city from 1979 to 2005. Combining the integrated technology of ecological quantity analytical method with GIS technology, based on the MSS images in 1979, TM images in 1988 and ETM+ images in 2005, the changes of land use/cover and landscape pattern were analyzed in study area from 1979 to 2005.The results showed that the...
The paper had analyzed LUCC of Chongqing urban in the past 30 years using the RS and GIS technology. The changes of the temperature, precipitation, sunshine, humidity, wind speed and air pressure of Chongqing urban district in the past 30 years were obtained through analyzing the data of the weather station in Chongqing urban. The process of climatic change that responded to the LUCC was concluded...
Urban land use systems are complex systems with components, factors and agents from natural, environmental, social and economic systems. In this paper, we developed a remote sensing and GIS-based integrated approach to modeling and predicting spatially-explicit urban land use changes. The model was built using temporal remote sensing data land use analysis coupled with a Markov model and a spatial...
For the target of ecological restoration and landscape overall optimization, the study selects China Jingxi abandoned coal mines for typical cases, takes advantage of remote sensing data and GIS spatial information processing technology, through the method combing existing land-use planning, damage assessment of ecological environment and overall optimization of land resource using pattern, determines...
Rapid land use change has taken place in many urban regions of China such as Chengdu city, many problems in society and environment have appeared. Assessment on urban land use change is essential for land sustainable development. The objective of this study is to analyze the spatio-temporal dynamic change of urban land use from 1992 to 2008 in Chengdu city, the provincial capital of Sichuan, has undergone...
Taking Jiangxia District in Wuhan City as the research region by using RS and GIS comprehensively. According to the country secondary category and classification standard interpretation. Reveal the characteristics of the fractal structures of the distribution of land use types. Explore the significance of the fractal on land use types. The fractal dimensions (D) and stability indexes (S) of first...
In recent years, extensive studies have been done in dynamic monitoring on urban built-up spatial expansion and its dynamic mechanism using the integration technology of remote sensing (RS) and GIS. These previous studies, however, focused on the spatial expansion of a single town without taking into consideration of the spatial morphology evolution of the town groups constituted of several towns...
Land use change is not only related to some natural, social and economic factors, but also influenced by land use structure, policies and value orientation, and the influence of driving factors are spatially unstable. To make the simulation of land use patterns more reasonable and accurate, CLUE-S model is applied and improved. The authors use GWR instead of logistic regression to build a regression...
Nonpoint source (NPS) pollution has become one of the biggest challenges in maintaining water quality and aquatic ecosystems. However, the impacts of topography, land use change, human activities, precipitation etc., make the modeling and control of NPS pollution in temporal and spatial scales difficult. In recent years, the rapid development of Remote Sensing (RS) and Geographic Information System...
Searching for urban growth boundary, understanding the process of urban expansion and analyzing the evolution characteristics are of great practical significance to understand the city's historical evolution and to make the scientific planning. Meanwhile, remote sensing, geographical information science, Geo-Informatic Tupu provide the efficient means in such study. The aim of this paper is to discuss...
Urban land-use patterns change has become one of hot topics on land use/ land cover change (LUCC) studies in the worldwide area. As urban land change is influenced by both topography and human behavior driving factors, it is a complex dynamic and spatio-temporal progress. To simulate and analyze urban land use patterns and its driving factors, the logistic regression model is implemented as the statistical...
Taking Landsat5/TM images of 1988, 1997 and 2005, this paper used RS and GIS to analyze the changes of ecological environment effects of land use/cover change (LUCC) during the recent 17 years of the study area. The results indicate that: swamp land shows obvious decreasing trend and decreases 1674km2; dry land and paddy land shows strong increasing trend and increase 377km2 and 1338km2 separately...
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