Résultats de la recherche
Showing items 1 through 9 of 16.-
Library ResourceArticles et Livresfévrier, 2012Japon
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Library ResourceArticles et Livresdécembre, 2010Brésil, États-Unis d'Amérique, Chine, Amérique du Sud, Europe
Az élelmiszerárak növekedése 2006–2008 között a világ egyes térségeiben zavargásokhoz és a politikai stabilitás megrendüléséhez vezetett. Különösen fejlődő országokban súlyos a helyzet, ahol a legszegényebb rétegek jövedelmük döntő hányadát élelmiszerekre költik. Az agrárpiacokon a kereslet vált meghatározóvá, mennyiségi (humáncélú és ipari felhasználás rohamos növekedése) és minőségi értelemben (élelmiszer-fogyasztás szerkezetének változása).
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Library ResourceArticles et Livresdécembre, 2003Chine
Severe soil erosion and food security problems are the most important issues in the Loess Plateau of northern China, which are closely related to the over-cultivation and poor management of marginal land resources. Alleviation of these unsustainability problems requires, among many other things, alternative and innovative cropping systems. This paper describes the identification of such cropping systems and their quantitative evaluation.
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Library ResourceArticles et Livresdécembre, 2012Chine
Modeling human–environment systems presents many challenges, including incorporating structure and agency and addressing uncertainty in system components and relationships. Exploring perceptions not only gives us insight into decision-making (agency) but also reveals structural constraints influencing those decisions (including perceived constraints). This study focuses on the human–nature dynamics of Fanjingshan National Nature Reserve (FNNR) in China, a biodiversity hotspot and the only habitat for the Guizhou golden monkey (Rhinopithecus brelichi).
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Library ResourceArticles et Livresdécembre, 2013Chine
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.
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Library ResourceArticles et Livresdécembre, 2016Chine
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.
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Library ResourceArticles et Livresdécembre, 2015Chine
A large number of mathematical models have been developed for supporting optimization of land-use allocation; however, few of them simultaneously consider land suitability (e.g., physical features and spatial information) and various uncertainties existing in many factors (e.g., land availabilities, land demands, land-use patterns, and ecological requirements). This paper incorporates geographic information system (GIS) technology into interval-probabilistic programming (IPP) for land-use planning management (IPP-LUPM).
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Library ResourceArticles et Livresdécembre, 2014Chine, Global
Global land use structure is changing rapidly due to unceasing population growth and accelerated urbanization, which leads to fierce competition between the rigid demand for built-up area and the protection of cultivated land, forest, and grassland. It has been a great challenge to realize the sustainable development of land resources.
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Library ResourceArticles et Livresdécembre, 2014Fédération de Russie, Chine
Detailed comparative analysis of basic lines of agrarian transformations in China and Russia has been done, its results have been analysed. Not only conceptual differences of the agrarian policy in those countries are demonstrated, but also consequences of concrete political decisions for the development of the branch. The differences are stipulated mainly by two groups of factors. The first of them is the opposite approaches to transforming land relations and the entire system of agrarian relations.
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Library ResourceArticles et Livresdécembre, 2014Chine, Norvège
Efficient plant nutrition and good agronomical practices are essential to meet future challenges in agriculture, while high land productivity is an obvious measure to integrate food security and environment protection. However, nutrient management in agriculture, including fertilizer applications and issues linked to nutrient losses, are highly complex due to multidimensional variability. Thus, robust systems of measurements and documentation, including planning, are required in order to support decision-making.
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