Abstract This chapter defines food security as the condition reached when a nation's population has access to sufficient, safe, and nutritious food to meet its dietary needs and food preferences. It stresses China's importance to global food security because of its population size. The chapter introduces the contents of the volume and then treats briefly food security in ancient and dynastic (211 bc-1912) China. It examines environmental stressors, such as population growth, natural disasters, and insect pests as well as imperial responses (for example, irrigation, flood control, storage and...
Abstract This chapter defines food security as the condition reached when a nation's population has access to sufficient, safe, and nutritious food to...
The past 25 years have witnessed an increasing worldwide concern over the issue of climate change and the specter of immense environmental and economic damage which would accompany unmitigated global warming trends. National governments in the industrialized world along with numerous multinational organizations have made a strong case for curbing the use of fossil fuels as an energy source, and agreements such as the Kyoto Protocol have come about largely due to their efforts. Many groups of researchers in both the natural and social sciences have made great strides in understanding this...
The past 25 years have witnessed an increasing worldwide concern over the issue of climate change and the specter of immense environmental and economi...
Research into microwave radiation from the Earth s surface in the presence of vegetation canopies, as well as the development of algorithms for retrieval of soil and vegetation parameters from microwave radiometric measurements, have been actively conducted for the last thirty years by many scientific groups and organizations all over the world. The capability of the microwave radiometric method to determine soil moisture and vegetation biometric indices was revealed a quarter of a century ago by the author and many of his colleagues. In fact, soil moisture and vegetation covers play a key...
Research into microwave radiation from the Earth s surface in the presence of vegetation canopies, as well as the development of algorithms for ret...
The mathematical modelling of the transport and transformation of trace species in the atmosphere is one of the scientific tools currently used to assess atmospheric chemistry, air quality, and climatic conditions. From the scientific but also from the management perspectives accurate inventories of emissions of the trace species at the appropriate spatial, temporal, and species resolution are required. The chapter has discussed bottom-up methodologies to estimate global and regional emISSIOns. These methodologies are based on activity data, emission factors (amount of emissions per unit...
The mathematical modelling of the transport and transformation of trace species in the atmosphere is one of the scientific tools currently used to ass...
Climatic Change is a rapidly evolving domain that has prompted the publication of numerous scientific works in recent years, reflecting both the public and scientific interest in the topic. This book focuses upon climate processes, variability and change and applies the general principles related to these issues, particularly in Switzerland. Although a small country, Switzerland is characterized by complex topography where climatic processes are often enhanced due to the presence of the Alps. In addition, there is a remarkable density of observational data in both the natural and social...
Climatic Change is a rapidly evolving domain that has prompted the publication of numerous scientific works in recent years, reflecting both the pu...
Climate dynamicists generally characterize the Hadley circulation in terms of some derived meteorological parameters, such as the mass stream function (the nondivergent part of the flow) or the velocity potential (the divergent circulation), both of which are based on measurements of the three-dimensional wind field. Yet, we know very little about how such in- ces have varied in the past--beyond the most recent decades. Paleocli- tologists are unable to reconstruct such indices, so long-term reconstructions of the Hadley circulation must be based on indirect characteristics that can be in...
Climate dynamicists generally characterize the Hadley circulation in terms of some derived meteorological parameters, such as the mass stream function...
WHY THIS BOOK? This book is an exploration of the possibility that a significant portion of the North American Great Plains (NAGP), now primarily in rangeland, corn, soybean, and small-grain production, can be converted to the production of biomass-energy crops. Biomass can be used as a substitute for some of the fossil fuels the use of which is now increasing the atmospheric concentration of carbon dioxide (CO ) 2 and contributing to global warming and climatic change. Such a land use change to biomass could lead not only to a global good but also to specific economic and environmental...
WHY THIS BOOK? This book is an exploration of the possibility that a significant portion of the North American Great Plains (NAGP), now primarily in r...
While we cannot hope to provide definitive answers to these questions, as political scientists we proceed from the assumption that much can be learned through the application of the existing tools of comparative political analysis. Two of the incidents occurred in developing countries (one a parliamentary democracy, the other a democratizing presidential system), and one occurred in a highly developed presidential democracy. All three countries are federal systems, with multiple layers of environmental regulation, although sub-national government seems to be better institutionalized and more...
While we cannot hope to provide definitive answers to these questions, as political scientists we proceed from the assumption that much can be learned...
Environmental change in general, and climatic change in particular, are likely to impact significantly upon resources such as water and soils, transforming present day landscapes and their ecological characteristics. As a consequence, disruptions of socio-economic activities in sensitive regions of the globe can be expected in coming decades. Agriculture is at particular risk, especially in areas where prolonged droughts, sea level rise, enhanced natural hazards, or extreme meteorological events such as floods or mudslides threaten marginal existence. Disruptions and risks may have large...
Environmental change in general, and climatic change in particular, are likely to impact significantly upon resources such as water and soils, tran...
For more than 40 years I have been engaged in timberline research. Thus, one could suppose that writing this book should not have been too difficult. It was harder, however, than expected, and in the end I felt that more questions had arisen than could be answered within its pages. Perhaps it would have been easier to write the book 30 years ago and then leave the subject to mature. Lastly it was the late Prof. Heinz Ellenberg who had convinced me to portray a much needed and complete picture of what we know of the timberline with special respect to its great physiognomic, structural and...
For more than 40 years I have been engaged in timberline research. Thus, one could suppose that writing this book should not have been too difficult. ...
