A new United Nations report warns that a third of the planet’s land is now severely degraded thanks to a doubling in the consumption of natural resources over the past 30 years. Some 15 billion trees and 24 billion tonnes of fertile soil are lost each year, according to the Global Land Outlook (GLO), launched by the secretariat of the UN Convention to Combat Desertification (UNCCD), at the meeting of States parties taking place in Ordos, China. The GLO takes a critical look at financial and socio-economic values of land, and its impact on the poor.

The unauthorised colony (UAC) is one of the seven types of ‘unplanned’ settlement designated by the Government of National Capital Territory of Delhi (GNCTD). UACs are residential settlements built in contravention of zoning regulations, developed either in violation of Delhi’s master plans or on ‘illegally’ subdivided agricultural land.

Food is fundamental to human wellbeing and development. Increased food production remains a cornerstone strategy in the effort to alleviate global food insecurity. But despite the fact that global food production over the past half century has kept ahead of demand, today around one billion people do not have enough to eat, and a further billion lack adequate nutrition.

Biological treatment, composting, in particular, is a relatively simple, durable and inexpensive alternative for stabilizing and reducing biodegradable waste. Co-composting of different waste sources allows to enhance the compost nutrient value. In particular, integration of ‘biosolids’ from the sanitation sector as potential input material for co-composting would provide a solution for the much needed treatment of fecal sludge from on-site sanitation systems, and make use of its high nutrient content.

Low-impact development (LID) comprises a broad spectrum of stormwater management technologies for mitigating the impacts of urbanization on hydrological processes. Among these technologies, green roofs are one of the most adopted solutions, especially in densely populated metropolitan areas, where roofs take up a significant portion of the impervious surfaces and land areas are scarce.

Using the farm as unit of analysis, diagnosis processes aimed at improving production systems are reviewed. Within a country, diagnosis should be conducted at different hierarchical levels: local (interaction between the production system and the input distribution sector, the marketing sector, possible forms of processing, and consumption characteristics); regional (appropriate selection of target site); and national (development trends and governmental policies at the macroeconomic and sectorial levels).

This paper assessed water management by households from three ethnic groups in two contrasting ecological settings (upland and lowland) in the Upper Ping River Basin in Northern Thailand. Important gender differences in the use and management of water were identified. Women are major users of water for agriculture in the uplands, but less so in the lowlands. In the lowlands irrigation is viewed as a masculine activity. In the uplands the role of women is more widely accepted, with women frequently being members of water user groups.

By increased rural-urban migration in many African countries, the assessment of changes in catchment hydrologic responses due to urbanization is critical for water resource planning and management. This paper assesses hydrological impacts of urbanization on two medium-sized Zimbabwean catchments (Mukuvisi and Marimba) for which changes in land cover by urbanization were determined through Landsat Thematic Mapper (TM) images for the years 1986, 1994 and 2008. Impact assessments were done through hydrological modeling by a topographically driven rainfall-runoff model (TOPMODEL).