Cellular automata model is an important method to simulate land use change. In the traditional land simulation method, the prediction model is constructed by focusing on analyzing the factors that influence the land use change, but it is less concerned about the model construction from the space angle of the change of land use types and their interaction. Based on the land use data of 1980~2000...

As a motivation, think of a forest fire. To restrict its propagation, assume that a barrier can be constructed, in real time. This could be a thin strip of land which is either soaked with water poured down from a helicopter, or cleared from all vegetation using a bulldozer, or sprayed with fire extinguisher by a team of firemen. In any case, the fire will not cross that particular strip of lan...

Study on land ecological safety can help people acquire the states and changes of land ecosystem. It is of great significance to realize the reasonable utilization of land resource. The paper constructed an evaluation index system of land ecological safety based on Pressure-State-Response model. Then the paper combined fuzzy mathematics and matterelement theory to establish an evaluation model ...

soil and land information is vital for land use planning and infrastructure development. maps of soils landscapes are powerful tools to guide sustainable planning and natural resource management. fuzzy set theory has been widely used in soil science for soil classification and mapping, land evaluation, fuzzy soil geostatistics, soil quality indices. in fuzzy logic-based approaches, soil spatial...

Seabirds and other land-breeding marine predators are considered to be useful and practical indicators of the state of marine ecosystems because of their dependence on marine prey and the accessibility of their populations at breeding colonies. Historical counts of breeding populations of these higher-order marine predators are one of few data sources available for inferring past change in mari...

Study on land ecological safety has become a forefront topic of regional sustainable development. The paper constructed an evaluation index system of land ecological safety. Then it discussed the ranges of indexes corresponding to each evaluation grade. Considering the illegibility and uncertainty in land ecological safety evaluation, the paper combined fuzzy matter-element and entropy method t...

iran's current taxation system cannot utilize the other facilities of taxing as an instrument for regulating market. land is a production factor which the state can use it to impose tax for controlling the speculations, optimizing the current allocations and receiving the revenues. in this paper, we study a model on the effects of land value taxation in iran's economy in long run as a...

The question of where to accommodate future urban expansion has become a politically sensitive issue in many regions. Against the backdrop of `urban compaction' policy, this study uses population surface modelling and cellular automata (CA) to conduct an empirical urban growth simulation for Southeast England. This implementation leads to a consideration of the proper balance between the theore...

the purpose of this study is to determine spatial dependency pattern of systematic risk of dry land wheat production in iran, using spatial autoregressive models. to this end, spatial weighted contiguity matrix was constructed based on the delaunay triangularization method, and correlation coefficient among these neighbors were estimated using spatial autoregressive models. in addition, the rol...