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Displaying 476 - 480 of 1605Native plant resources to optimize the performances of forest rehabilitation in Mediterranean and tropical environment: Some examples of nursing plant species that improve the soil mycorrhizal potential
The overexploitation of natural resources, resulting in an increased need for arable lands by local populations, causes a serious dysfunction in the soil's biological functioning (mineral deficiency, salt stress, etc.). This dysfunction, worsened by the climatic conditions (drought), requires the implementation of ecological engineering strategies allowing the rehabilitation of degraded areas through the restoration of essential ecological services.
importance of land cover change across urban–rural typologies for climate modeling
Land cover changes affect local surface energy balances by changing the amount of solar energy reflected, the magnitude and duration over which absorbed energy is released as heat, and the amount of energy that is diverted to non-heating fluxes through evaporation. However, such local influences often are only crudely included in climate modeling exercises, if at all. A better understanding of local land conversion dynamics can serve to inform inputs for climate models and increase the role for land use planning in climate management policy.
Quantifying the synergistic effect of the precipitation and land use on sandy desertification at county level: A case study in Naiman Banner, northern China
Assessing the driving forces of sandy desertification is fundamental and important for its control. It has been widely accepted that both climatic conditions and land use have great impact on sandy desertification in northern China. However, the relative role and synergistic effect of each driving force of sandy desertification are still not clear. In this paper, an indicator named as SI was defined to represent the integrated probability of sandy desertification caused by land use.
decision support tool for sustainable planning of urban water systems: Presenting the Dynamic Urban Water Simulation Model
Population growth, urbanisation and climate change represent significant pressures on urban water resources, requiring water managers to consider a wider array of management options that account for economic, social and environmental factors.
Leases, concessions, and authorizations. Searching for an alternative to the privatization of federal domain in Brazil
It has been nearly 10 years since the federal government of Brazil decided to make land tenure regularization a true priority. In theory, millions of families who informally occupy the federal domain should receive freeholds, emphyteutic leases, concessions of real or special rights, or occupancy authorizations. However, this paper questions the capacity of the Federal Land Agency to issue and manage these leases, concessions, and authorizations.