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Displaying 91 - 95 of 1605Measuring external costs of ruralâurban land conversion: An empirical study in Wuhan, China
Externalities of ruralâurban land conversion are major factors in the inefficiency of land resource allocation. Although many studies have proposed policy solutions of externalities, measuring externalities is still a challenge. According to definition of externalities, externalities of ruralâurban land conversion are the sum of nonmarket externalities and market externalities during land conversion process excluding owner of converted land.
Food or flowers? Contested transformations of community food security and water use priorities under new legal and market regimes in Ecuador's highlands
During the past three decades, the Pisque watershed in Ecuador's Northern Andes has become the country's principal export-roses producing area. Recently, a new boom of local smallholders have established small rose greenhouses and joined the flower-export business. This has intensified water scarcity and material/discursive conflicts over water use priorities: water to defend local-national food sovereignty or production for export.
Ecosystem services in urban planning: Comparative paradigms and guidelines for high quality plans
Ecosystem services are a powerful tool for land-use and environmental planning, which can help decision makers better understand the tradeoffs between different development scenarios. However, there is limited guidance about how ecosystem services should be used in the land-use and environmental planning context.
Simulating range-wide population and breeding habitat dynamics for an endangered woodland warbler in the face of uncertainty
Population viability analyses provide a quantitative approach that seeks to predict the possible future status of a species of interest under different scenarios and, therefore, can be important components of large-scale speciesâ conservation programs. We created a model and simulated range-wide population and breeding habitat dynamics for an endangered woodland warbler, the golden-cheeked warbler (Setophaga chrysoparia). Habitat-transition probabilities were estimated across the warbler's breeding range by combining National Land Cover Database imagery with multistate modeling.
remote sensing spatio-temporal framework for interpreting sparse indicators in highly variable arid landscapes
The world's extensive and often remote arid landscapes are receiving increasing attention to maintain their ecological and productive values. Monitoring and management of these lands requires indicators and evidence of ecosystem condition and trend, generally derived from widely distributed and infrequently repeated site-based records. However adequate geographic representation and frequent site revisits are difficult to achieve because of the remoteness and vast extent of these landscapes.