Land use and land cover change is driven by human actions and also drives changes that limit availability of products and services for human and livestock, and it can undermine environmental health as well. Therefore, this study was aimed at understanding land use and land cover change in Lenche Dima and Kuhar Michael of Amhara region, Ethiopia.

Regional situation of Zhejiang Province and connotation of Logistic Equation are introduced. According to the relevant statistical data from 1978 to 2006, dynamic change and its driving forces of cultivated land area in Zhejiang Province are analyzed. ① Since the year 1978, cultivated land area has shown a significant fluctuant decreasing trend in Zhejiang Province, China.

Literatures about factors affecting demand scale of rural land circulation are reviewed.

Agricultural production in Ethiopia is characterised by subsistence orientation, low productivity, low level of technology and inputs, lack of infrastructures and market institutions, and extremely vulnerable to rainfall variability.

Land and its size are important as the most basic factors of production in agriculture .Fragmentation is one of the main problems that rice producers of Mazandaran province are confronted with. Non-efficiency in farm management, inability in effective using of agriculture technology and machinery, and low range productivity of production are all related to land fragmentation.

The problems of desertification control in China are analyzed from the perspective of ecological compensation. Firstly, there is no guarantee of ecological compensation system in desertification control.

Based on apprehending the conception of intensive use of woodland, 12 indices are selected from the aspects of economy, society, ecology and so on according to the principles of scientific systematization, collectible index and system inner linkage. A scientific evaluation index system for woodland intensive use is constructed.

Colombia, apoyado en la hipótesis de que el comercio internacional es la fuente principal de crecimiento económico y de modernización institucional, opta por la exportación de productos agropecuarios en los que tiene ventajas comparativas. La política agraria en el modelo neoliberal (años 1990) se ha orientado a dichos propósitos.

Developing countries, as a group, are the ones most threatened by the hydrological impacts of global climate change. Water is a critical resource in development, and it is affected by climate change in multiple, complex ways ? through changes in temperature and rising sea levels, changes in precipitation patterns, and melting snowfields and glaciers.

The Himalayan region is not only tectonically active and ecologically fragile but is it also one of the most economically underdeveloped and most densely populated mountain ecosystems on the planet.