نتایج جستجو برای: land shape
تعداد نتایج: 306014 فیلتر نتایج به سال:
Land cover classification with a high accuracy is necessary, especially in waste dump area, accurate land cover information is very important to eco-environment research, vegetation condition study and soil recovery destination. Funded by the international cooperation project Novel Indicator Technologies for Minesite Rehabilitation and sustainable development, a hierarchical object oriented lan...
While geographers and economists regularly work together on the development of land-use and land-cover change models, research on how differences in their modelling approaches affects the results is rare. Answering calls for more coordination between the two disciplines in order to build models that better represent the real world, we (two economists and a geographer) developed an economically ...
The objective of this research is to assess the multitemporal very high resolution single polarization SAR data for urban land cover/land-use mapping using a novel knowledge-based SEM algorithm. Three-date RADARSAT-2 ultra-fine beam SAR data were collected over the rural-urban fringe of Greater Toronto Area. A modified Stochastic Expectation-Maximization (SEM) algorithm which employs an adaptiv...
In the light of ongoing land use changes, it is important to understand how multitrophic communities perform at different land use intensities. The paradox of enrichment predicts that fertilization leads to destabilization and extinction of predator-prey systems. We tested this prediction for a land use intensity gradient from natural to highly fertilized agricultural ecosystems. We included mu...
Classification and Evaluation on Urban Sprawl Quality in Future Shenzhen Based on SOFM Network Model
Urban sprawl has become a significant part of the regional socio-economic progress since the 20th century. The growing demand for urban land brings the issue that urban sprawl caused increasingly prominent. Studies in aboard on urban sprawl are comparatively earlier, mainly including the concept deconstruction in multi-angle, the shape and path of urban sprawl, and the measure of urban sprawl a...
Human activities (urbanisation, industry) and natural hazard effects (floods, drought, etc.) shape land use and land cover features over space and time. Stakeholders need planning tools to develop land policy strategies (e.g. zoning regulations) and to improve various aspects in urban planning. Therefore in the last decades, they relied on scientist to provide them with efficient decision suppo...
Abstract Tundra ecosystems have experienced changes in vegetation composition, distribution, and productivity over the past century due to climate warming. However, increase above-ground biomass may be constrained by cryogenic land surface processes that cause topsoil disturbance variable microsite conditions. These effects remained unaccounted for tundra models, although they can impact multip...
This article presents a general agent-based simulation approach that captures agents’ decision-making processes and dynamic relationships that determine urban shape. The article shows how to simulate urban growth patterns and land-use change dynamics using economic assumptions and by modeling the interactions of computational agents.
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