Measurements of nutrient stocks and greenhouse gas (GHG) fluxes are typically collected at very local scales (<1 to 30 m2) and then extrapolated to estimate impacts at larger spatial extents (farms, landscapes, or even countries). Translating point measurements to higher levels of aggregation is called scaling. Scaling fundamentally involves conversion of data through integration or interpolation and/or simplifying or nesting models. Model and data manipulation techniques to scale estimates are referred to as scaling methods.

Reliance on rainfall for agriculture and increased climate change and variability pose growing production risks in developing countries. Agriculture in Sub-Saharan Africa is dominated by smallholder farmers who depend mainly on rain-fed agriculture, putting food security at both household and national levels at risk, especially in the event of drought. Investment in smallholder irrigation becomes a priority in developing countries if food security and national development goals are to be met, as their economies are agro-based.

In addition to global events and food policy changes, 2015 also saw important developments with potentially wide repercussions in individual countries and regions. This chapter offers perspectives on major food policy developments across the major regions: Africa, the Middle East and North Africa, Central Asia, South Asia, East Asia, and Latin America and the Caribbean.

This issue contains stories on country level activities and news and updates on events, publications and trainings relater to the gender work in FAO in Asia and the Pacific. There is a report on FAO's contribution to the Sustainable Development Goal Five (SDG5) and a feature article on Isan Indigenous Thai Silk Yarn production.

This article reviews, from a socio-economic perspective, the current state of knowledge and controversies around the causes and consequences of global climate change. It considers the prospects for reducing global emissions of greenhouse gases (GHGs) which, according to the scientific consensus, are the key anthropogenic drivers of climate change. The focus is on two major areas of economic activity, the agriculture, forestry and other land use sector and the energy sector, which together account for around 60% of global GHG emissions.

Reliance on rainfall for agriculture and increased climate change and variability pose growing production risks in developing countries. Agriculture in Sub-Saharan Africa is dominated by smallholder farmers who depend mainly on rain-fed agriculture, putting food security at both household and national levels at risk, especially in the event of drought. Investment in smallholder irrigation becomes a priority in developing countries if food security and national development goals are to be met, as their economies are agro-based.

Context: Various species of forest trees are commonly used for ornamental purposes and are therefore frequently found in nonforest ecosystems. They constitute an important component of the so-called trees outside forests (TOF).