Rural construction land consolidation (RCLC) is an innovative approach to coordinating the outmigration of a rural population and the increase in rural housing land, thereby protecting farmland and ensuring food security, adding to urban construction land quotas, and improving the rural habitat environment in China. Since 2005, several different models or approaches to RCLC have been practiced by local governments.

Climate change impacts on agriculture could arguably be most critical for developing countries in tropical regions: their populations rely importantly on agriculture and climate-dependant resources, poverty limits their capacity to anticipate and adapt to climate change, and population increase already poses a serious challenge to food security in those regions. Current projections of climate change impacts on tropical crop yields, even though on average negative, remain largely uncertain: there is need for more consistent, large-scale, quantitative assessments.

The global food crisis has been widely described in terms of the volatility of grain and oilseed markets and the associated worsening conditions of food security facing many poor people. Various explanations have been given for this volatility, including increasingly meat-centered diets and rising demand for animal feed, especially in China.

BackgroundGrasslands are a major part of the global ecosystem, covering 37 % of the earth's terrestrial area. For a variety of reasons, mostly related to overgrazing and the resulting problems of soil erosion and weed encroachment, many of the world's natural grasslands are in poor condition and showing signs of degradation. This review examines their contribution to global food supply and to combating climate change.ScopeGrasslands make a significant contribution to food security through providing part of the feed requirements of ruminants used for meat and milk production.

Legislative changes during the 1960s–1970s granted user rights over wildlife to landowners in southern Africa, resulting in a shift from livestock farming to wildlife-based land uses. Few comprehensive assessments of such land uses on private land in southern Africa have been conducted and the associated benefits are not always acknowledged by politicians. Nonetheless, wildlife-based land uses are growing in prevalence on private land. In Namibia wildlife-based land use occurs over c. 287,000 km².

Cities are characterized by dynamic interactions between socio-economic and biophysical forces. Currently more than half of the global population reside in cities which influence the global biogeochemical cycles and climate change, substantially exacerbating pressures on urban pollution, water quality and food security, as well as operating costs for infrastructure development. Goods and services such as aesthetic values, water purification, nutrient recycling, and biological diversity, that urban ecosystems generate for the society, are critical to sustain.

We explore the utility of a consumption coping strategy index (CSI) in characterising and assessing the factors influencing household food insecurity.

Land has a cultural value in Nigeria in that its ownership cements
the relationship of the owner with the community. But more
importantly, land resource is critical to the livelihood of rural
farmers because they depend on it for income and food supply.
It is therefore important that it is sustainably managed and
efficiently used. This study investigated the ownership pattern
of land among the farming families in the study area and the
attitude towards its management. It adopted the farming and

Climate change and recurrent drought in many of the world's dry places continue to inspire the search for economically attractive measures to conserve water. This study analyzes water conservation practices in irrigated agriculture in a sub-basin in North America's Rio Grande. A method is developed to estimate water savings in irrigated agriculture that result from public subsidies to farmers who convert from surface to drip irrigation. The method accounts for economic incentives affecting farmers' choices on irrigation technology, crop mix, water application, and water depletion.

There is an increasing need to view agro-ecosystems and to identify remedial management practices in a holistic way. An integrated model based on the driving force-pressure-state-impact-response approach was developed as a tool to assess the effects of policies for improving decision making for the sustainability of agro-ecosystems. An economic model was linked to a process-based biophysical model by a meta-model. Then, a holistic indicator-based impact assessment system was linked to the integrated model to assess policy instruments.