JOHANNES FEDDE1\IA is Assistant Professor of Geography at the University of California, Los Angeles. He was formerly a Ph.D. student at the University of Dela\vare. His research interests include \vater balance climatology and climate/teleconneccion processes. CORT WILLMOTT is Chair of the Department of Geography and Professor of Geography and Marine Studies at the University of Dela\vare. He a...

Tongyu County in Northeast China is highly prone to land degradation due to its fragile physical settings characterized by a flat topography, a semi-arid climate, and a shallow groundwater table. This study aims to determine the causes of land degradation through detecting the long-term trend of land cover changes. Degraded lands were mapped from satellite images recorded in 1992 and 2002. Thes...

T increased connectivity of the global human population has amplified the frequency and effect of biological invasions and disease outbreaks. New trade routes among previously disconnected countries (Aide and Grau 2004) as well as enhanced transportation technology (eg airplanes and barges) have increased both the frequency and magnitude of invasions and potentially deadly disease outbreaks wor...

evaluation soil erosion is an important matter to protecting it from destroying in future due to the excessive use of the inherent capacity of soil and also improper management. therefore, in this study land vulnerability related to water and wind erosion of abyek for crops and pasture land has been evaluated, using raizal model as one of the microleis sub-models. morphological and physical and...

The National Aeronautics and Space Administration (NASA) Glory mission, a remote sensing Earth-orbiting observatory, which was scheduled for launch in June of 2009 but now delayed for October of 2010 [1], as part of the A-train constellation (705 km altitude, 98.2 degrees inclination) Sun-Synchronous orbit. Glory mission objective is to increase our understanding of aerosols as agents of climat...

Land use of a region is a function of use of land, community, attitude of people in their daily walks of life, occupation of the region and finally location, rate and quantum of interaction irrespective of distance with the nodal point at the region. The functionality of the region differs from place to place and remains a key factor in Suburbia. Land use is obviously constrained by environment...

The biological activity and geographic distribution of the malarial parasite and its vector are sensitive to climatic influences, especially temperature and precipitation. We have incorporated General Circulation Model-based scenarios of anthropogenic global climate change in an integrated linked-system model for predicting changes in malaria epidemic potential in the next century. The concept ...

This paper aims at evaluating the impacts of climate change on land use patterns in Brazil. To this purpose, we specify and estimate an econometric land use model to assess how climate variables affect land allocation decisions according to three types of use: cropland, pasture and forestland. Based on the econometric model estimates, we then simulate how farmers will adapt their land use choic...

Climate and land cover change are driving a major reorganization of terrestrial biotic communities in tropical ecosystems. In an effort to understand how biodiversity patterns in the tropics will respond to individual and combined effects of these two drivers of environmental change, we use species distribution models (SDMs) calibrated for recent climate and land cover variables and projected t...