Aller au contenu principal

page search

Displaying 553 - 564 of 3109

Mitigating risk: Social protection and the rural poor

Peer-reviewed publication
Décembre, 2015

People in developing countries—particularly the agricultural poor—face a host of risks to their lives and livelihoods, including those stemming from globalization, climate change, and weather shocks. These experiences highlight the importance of social protection, which can have a potentially significant impact on reducing poverty and vulnerability when implemented with the optimal design, targets, and resources.

2014-2015 Global food policy report

Peer-reviewed publication
Décembre, 2015
Afrique occidentale
Afrique orientale
Afrique australe
Asie méridionale
Afrique sub-saharienne
Asie central
Amérique du Sud
Afrique
Asie

This 2014–2015 Global Food Policy Report is the fourth in an annual series that provides a comprehensive overview of major food policy developments and events. In this report, distinguished researchers, policymakers, and practitioners review what happened in food policy in 2014 at the global, regional, and national levels, and—supported by the latest knowledge and research—explain why. This year’s report is the first to also look forward a year, offering analysis of the potential opportunities and challenges that we will face in achieving food and nutrition security in 2015.

The political economy of land governance in the Mekong Region

Reports & Research
Décembre, 2015
Cambodge
Chine
Myanmar
Thaïlande
Viet Nam

This report presents a political-economic analysis of land governance at the regional level, focusing on the Mekong Region. The primary emphasis is on Cambodia, Laos, Myanmar and Vietnam, but the paper also takes into account the regional role and land governance experiences of Thailand and China.

Combining gray system and poroelastic models to investigate subsidence problems in Tainan, Taiwan

Journal Articles & Books
Décembre, 2015
Taiwan

Tainan, located in southwestern Taiwan, is a high-risk region for flooding and climate change effect and has a potential for future heavy rains. Groundwater pumping for aquaculture and irrigation along the coastal plain of Tainan is monitored due to subsidence. Predicting future subsidence and understanding the effect of climate change on subsidence can assist with regard to the planning and management of water and land resources in the early stages of subsidence, whose possible damage can thus be avoided.

endogenous growth model for the evolution of water rights systems

Journal Articles & Books
Décembre, 2015

This article presents a model to help explain the transition path from one water management system to another, typically a commons framework to one of tradable permit‐based property rights. Furthermore, drawing from transaction cost literature, the model demonstrates how this takes place when externalities (the strain on water resources) become severe enough to warrant the increased transaction costs inherent with more complex water rights management frameworks.

Nature as capital: Advancing and incorporating ecosystem services in United States federal policies and programs

Journal Articles & Books
Décembre, 2015
États-Unis d'Amérique

The concept of nature as capital is gaining visibility in policies and practices in both the public and private sectors. This change is due to an improved ability to assess and value ecosystem services, as well as to a growing recognition of the potential of an ecosystem services approach to make tradeoffs in decision making more transparent, inform efficient use of resources, enhance resilience and sustainability, and avoid unintended negative consequences of policy actions.

Spatial Analysis of Soil Subsidence in Peat Meadow Areas in Friesland in Relation to Land and Water Management, Climate Change, and Adaptation

Journal Articles & Books
Décembre, 2015

Dutch peatlands have been subsiding due to peat decomposition, shrinkage and compression, since their reclamation in the 11th century. Currently, subsidence amounts to 1–2 cm/year. Water management in these areas is complex and costly, greenhouse gases are being emitted, and surface water quality is relatively poor. Regional and local authorities and landowners responsible for peatland management have recognized these problems. In addition, the Netherlands Royal Meteorological Institute predicts higher temperatures and drier summers, which both are expected to enhance peat decomposition.

Mapping of regional soil salinities in Xinjiang and strategies for amelioration and management

Journal Articles & Books
Décembre, 2015
Chine

Information on the spatial distribution of soil salinity can be used as guidance in avoiding the continued degradation of land and water resources by better informing policy makers. However, most regional soil-salinity maps are produced through a conventional direct-linking method derived from historic observations. Such maps lack spatial details and are limited in describing the evolution of soil salinization in particular instances.

technique for quantifying groundwater pumping and land subsidence using a nonlinear stochastic poroelastic model

Journal Articles & Books
Décembre, 2015
Taiwan

Subsidence in Yunlin County, Taiwan, is serious and continuous. The Taiwan High Speed Rail (THSR) route crosses the subsidence area and might be affected by differential settlements. It is important to evaluate the pumping quantity for water resource management and to predict the subsidence for land resource management to mitigate the subsidence problem in Taiwan.

Water quality, potential conflicts and solutions—an upstream–downstream analysis of the transnational Zarafshan River (Tajikistan, Uzbekistan)

Journal Articles & Books
Décembre, 2015
Tadjikistan
Ouzbékistan

The Central Asian countries are particularly affected by the global climate change. The cultural and economic centers in this mostly arid region have to rely solely on the water resources provided by the rapidly melting glaciers in the Pamir, Tien-Shan and Alay mountains. By 2030, the available water resources will be 30 % lower than today while the water demand will increase by 30 %. The unsustainable land and water use leads to a water deficit and a deterioration of the water quality.

Response of hydrological processes to land use change and climate variability in the upper Naoli River watershed, northeast China

Journal Articles & Books
Décembre, 2015
Chine

Changes in land use and climate and their significantly impacts on the hydrological cycle are of widespread concern to researchers and policy makers. The Soil and Water Assessment Tool (SWAT) model is used to analyze the effects of land use change and climate variability in the upper Naoli River watershed in the Sanjiang plain, northeast China. The remarkable land use changes include the decrease of woodland and wetland along with the farmland increasing.

Impacts of agricultural land-use dynamics on erosion risks and options for land and water management in Northern Mongolia

Journal Articles & Books
Décembre, 2015
Mongolie

In Mongolia, nomadic herders have successfully been grazing livestock for more than a millennium. However, in recent years, concerns have increased that changes in management and higher livestock stocking rates may negatively affect vegetation and increase soil erosion, overland flow and sediment load of rivers. In addition, ambitious agricultural policies increase the intensity of agricultural land use thus enforcing a conversion of grassland to agricultural land which is far more susceptible to erosion.