Aeolian features ; Arid area ; Arizona ; Experimentation ; Plant canopy ; Semi-arid area ; Soil erosion ; United States of America ; Wasteland ; Wind erosion ; Wind speed
used to evaluate the partitioning of shear velocities and shear stresses between the plant canopy and the surface. Results are discussed with the goal of assessing the protection provided by sparse vegetation against wind erosion.
The hydrological conditions of the Hungarian upper (the Hungarian-Slovak border) stretch of the Danube river befor construction of the Bös hydropower plant ant the most important engineering data of the Bös-Nagymaros hydropower scheme
and of the Dunacsúny dam (variant C) are described. The changes in water level discharge, sediment and bed load transport of the Danube river due to the construction of Bös hydropower plant are tackled. The effects of the changes of hydrologic conditions on the natural
14C ages related to human cultures, cultivated plants and native flora in Europe and in Mediterranean area allowed us to build a time succession for the evolution of the human cultures compared with cultivations and the diffusion of native flora
England ; External control ; Industrial development ; Industrialization ; Innovation ; Local labour market ; Plant ; Producer services ; Research and development ; Sheffield ; Structure of the firm ; United Kingdom
Measurements of temperature above and below ground, vapor pressure, radiation and rainfall revealed a drought which placed water stress on plants on this mountain in southeast Asia. The el niño event was possibly not the only cause of the drought
This paper discusses in detail the distributions, plant characteristics and environmental conditions of the coastal vegetated wetlands in China. Given a great amount of fine sediment by rivers, China's coastal wetlands are accumulated rapidly
Après un bref rappel de quelques notions de base (types de végétation, bilan carboné des éco-systèmes, photosynthèse, respiration des plantes et des décomposeurs), l'A. s'interroge sur la réponse possible des arbres et des forêts à l'augmentation du
Recent theorisation in rural studies provides insights that assist interpretation of change in the Tasmanian dairy industry. Factors contributing to change include growth of foreign ownership of dairy properties and manufacturing plant. The changes
The state of Yucatan has seen a large incrase in the number of export-oriented plants since 1985 due to combination of cheap labor and good accessibility to US markets. Long-term benefits of these factories are questioned. - (DWG)
This study reconstructs past plant communities in the pampa grassland for the late Quaternary, to infer regional paleoclimatic trends, and to relate these trends to global changes in atmospheric circulation. Several dated pollen records were anlyzed