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As a particular agricultural and vernacular landscape. Terrace land has been generated by long-time experiences accumulating in farming. It is a sustainable land use model, which is satisfy human living and survival needs. Based on the case study of Baiyangdian region, the research illustrate the structure, functions, values of the Terrace Land system evaluated by Ecological Services and the great...
This paper taking Mudanjiang in Heilongjiang Province as the study region, the remote sensing data and topographic map data in forth years as a basis for data, the vulnerability model was evaluated based on the sensitivity, exposure and adaption ability, relevant parameters of model was acquired by GIS and RS technology and mathematic model, and the vulnerability of ecological environment was in a...
Study area of the research is Qinhuangdao City. Establishment and extraction of ecological security landscape index system is an important component of ecological security evaluation. Ecological security landscape index system is an important factor group for the evaluation of regional ecological Security. Together with other ecological security evaluation indices and social statistics indices, this...
Ecological Risk (ER) refers to the possibility of reduction for its partial health, productivity, economic value and aesthetic value when normal functions of whole landscape have been intimidated by external environment. Ecological risk assessment is a key measure of ecological environment management. Assessing the ecological risk at regional scale has practical significance in strengthening ecosystem...
At the age of post-Kyoto Protocol, international forestry carbon sequestration project not only has strongly achieved the form of harmoniously developing between economy and environment conservancy in developing countries, but also is promoting the relative research on theory and technology in Forestry Carbon Sequestration. And this paper has discussed that how to establish the Geo-Spatial Model of...
As one of the core research aspect in Land use and land cover change, the optimal allocation of land use is soon becoming the key measure for sustainable land utilization. In this paper, we designed a method that could implement the multiobjective optimization model for sustainable land use in space automatically, thus we could obtain spatial optimal allocation. Yangshan Town was taken as the research...
It is a hot issue of current research that how to strengthen the land use management, so that resources and environmental capacity, land development costs and industrial construction and agricultural production would be spatial balanced to promote regional sustainable development in rapid urbanization and industrialization process. A Case Study in Langfang city of Hebei province was made. Based on...
A COM-based decision tree model was integrated with Geographical Information Systems (GIS) to assess the soil Cu pollution in Fuyang, Zhejiang, China. The integration of the decision tree model with ArcGIS Engine 9.2 using a COM implementation in Microsoft® Visual Basic 6.0 provided an approach for assessing the spatial distribution of soil Cu content with high predictive accuracy. The decision tree...
Visualizing the regional cultivated land instability degree (CLID) can be used to determine data for local government's effort on managing agricultural productions. An imagery-based model incorporating macroscaled contribution factors was performed in Zhangjiagang Region to calculate the local CLID in 2004. Using NDVI layer and recursive threshold procedure to extract the initial state, the model...
Based on dynamic changes of land use types from remote sensing data at 2000-2005 periods, dynamics of landscape pattern in Shen-Fu Connection Area are quantitatively analyzed during those two periods. The transition probability matrices at two primary states (2000 and 2005) are established. Then, the development and the future tendency of landscape patterns are simulated and forecasted with Markov...
Predicting the distribution of animals is not only important for conservation, but also for assessing the potential impacts of environmental changes. Ground beetles (Coleoptera: Carabidae), which is one of common environmental indicator species, were investigated by pitfall trapping in different habitats during May to September, 2006 in agroecosystems of Northern China. A logistic regression model...
The poverty and environmental degradation are very serious in karst regions of southwest China. In this paper, the spatial distributions and variations of oxygen regulation values (ORVs) were evaluated for the typical karst areas in Northwest Guangxi, China from 1985 to 2005, based on remote sensing and geographic information system techniques. The results showed that ORVs decreased firstly and then...
Continuous long-term measurements of carbon fluxes have been obtained by improved technology at the ecosystem scale and under natural conditions. Nevertheless, these are still point measurements with limited geographic coverage Quantitative extrapolations and scaling-up of tower station measurements are now urgently needed for carbon cycle research. This paper attempts to solve this problem by combining...
Integrated modeling has gained great attention of environmental researchers due to increasing cross-disciplinary and multi-scale research. Existing approaches require heavy coding tasks and familiarity with modeling toolkits of modelers, which commonly become a big barrier to their applications. Here we present a system called Isim that provides an integrated modeling approach in completely graphical...
In this paper we present results from the first implementation of an ldquoeasy modulerdquo tool, through a graphical user interface (GUI), running the kinematic emission model (KEM) developed at the Istituto Motori in Naples. The core of the tool is a set of regression equations applying an empirical model which calculates vehicle emissions in real-world hot driving conditions, based on a Partial...
This article introduces the analytical hierarchy process (AHP) and geographic information systems (GIS) into the traditional green space system planning. It takes the unique advantages of the multi-factor decision-making while combining the qualitative and quantitative analysis of AHP, combines with the strong spatial analysis functions of GIS, and brings a new attempt to the traditional method of...
Sensor webs for environmental monitoring integrate data from a large number of fixed and mobile sensors. The spatial and temporal distribution of these sensors varies with time when the network controllers adapt the operation of the sensors to detected events. The paper describes an approach for online visualization of data from such sensor webs. The visualization approach explicitly takes into account...
Wave exposure is one of the most important structuring factors for benthic species in the Baltic Sea. In the present study the importance of including wave-height as an input layer in models of spatial distribution of macroalgal and fish species was evaluated for a group of offshore banks in the southern Bothnian Sea. The wave heights were simulated at 25 m-resolution with the steady-state spectral...
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