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Showing items 45181 through 45189 of 73422.Facilitation of tree regeneration by nurse shrubs that offer protection against large herbivores is an important driver of wood-pasture dynamics. Here we asked whether the response to facilitation by nurse shrubs depends on the grazing resistance of the protégé saplings.
Our study examines the effects of grazing exclusion on low-productive subalpine and alpine grasslands of the Central Alps (UNESCO Biosphere Park Gurgler Kamm, Obergurgl, Austria). A long-term exclusion experiment was established in 2000 in the subalpine, the lower, and the upper alpine zone.
In stated preference assessments of farmland preservation programs, respondents are often told that preservation will occur within a given scale-e.g., community, state, county-but do not know the specific location of parcels in question.
While theory strongly suggests that restricting development rights should reduce land prices, empirical evidence of this effect has been notoriously hard to obtain.
If tropical farmers cannot be provided with sustainable landâuse systems, which address their subsistence needs and keep them gainfully employed, tropical forests will continue to disappear.
Impervious surfaces are the result of urbanization that can be explicitly quantified, managed and controlled at each stage of land development.
This study focuses on how irrigation processes affect local climate over arid areas. The chosen study area is northwest China, a typical arid region where three dominant land‐use types are irrigated cropland, grassland, and desert.
By revisiting theoretical concepts in biogeography and the importance of thermodynamic laws in biosphere-atmosphere interactions, ecological sustainability in agricultural systems may be better defined.
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