peri-urban area development process decreases agricultural land use because of significant trend of city sprawl. in the agricultural sector, goals for sustainability generally include maintenance or enhancement of the natural environment, meeting of human needs for food, economic viability, and social welfare. as agriculture has enormous environmental impacts on peri-urban regions, it is necess...

The accelerated growth of the global urban population implies an increasing demand for public services. Yet, urban centres in developing countries are unable to meet such demand – services such as sanitation are poor or inadequate to cope with the increasing rates of urbanisation and the associated higher standards of living. According to the UN 2002 Human Development Report, 2.4 billion people...

The definition of food security has evolved to emphasise access to food, rather than mere availability of food. It also explicitly incorporates the need for a healthy diet, complete with necessary vitamins and proteins, rather than simply sufficient calories. Therefore, adequate national and community-level food supplies must be available year-round; households must have both physical and econo...