Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 11.
  1. Library Resource
    Human Impact and Land Degradation in Mongolia
    Publication évaluée par des pairs
    décembre, 2013
    Mongolie

    Climate warming and human actions both have negative impacts on the land cover of Mongolia, and are accelerating land degradation. Anthropogenic factors which intensify the land degradation process include mining, road erosion, overgrazing, agriculture soil erosion, and soil pollution, which all have direct impacts on the environment. In 2009–2010, eroded mining land in Mongolia increased by 3,984.46 ha., with an expansion in surrounding road erosion. By rough estimation, transportation eroded 1.5 million ha. of land.

  2. Library Resource
    Articles et Livres
    avril, 2013
    États-Unis d'Amérique, Mongolie

    The spatial distribution of vegetation trends identified by time series analysis of the normalized difference vegetation index (NDVI) for the Mongolian grasslands was cross-referenced with the recently obtained land use/cover data and socioeconomic information in the geographic domain. Global Inventory Modeling and Mapping Studies (GIMMS) dataset with an 8-km resolution provided by the Global Land Cover Facility (GLCF) of the United States were used to compute the vegetation trends.

  3. Library Resource
    janvier, 2013
    Inde, Kenya, Chine

    Through the analysis of newspaper articles and a survey of journalists, this publication identifies gaps and highlights differences in how the media portray pastoralism in Kenya, China and India. In discussing their methodology, the authors note that their reliance on national, English-language publications meant that they were not able to include data from vernacular language press in pastoral regions.Although able to make significant contributions to food security, livelihoods and economic prosperity, the benefits of pastoralism often go unnoticed.

  4. Library Resource
    Articles et Livres
    octobre, 2013
    Afrique, Asie orientale

    Climate-induced livelihood transitions in the agricultural systems of Africa are increasingly likely. There is limited evidence on what such transitions might look like. We carried out fieldwork in 12 sites in Kenya, Tanzania and Uganda to understand changes in farming systems in the recent past, and to test the hypothesis that sedentary farmers in zones that may become warmer and drier in the future may be forced to increase their reliance on livestock vis-à-vis cropping in the future. We estimated the contribution of crop and livestock activities to incomes, food security and poverty.

  5. Library Resource
    Rapports et recherches
    juillet, 2013
    Brésil, Canada, Chine, Danemark, Inde, Niger, République-Unie de Tanzanie, Viet Nam, Amérique centrale, Amérique du Sud, Amérique septentrionale, Asie méridionale, Asia du sud-est, Afrique occidentale, Afrique, Asie, Asie orientale, Afrique orientale

    This paper identifies sixteen cases of large-scale actions in the agriculture and forestry sectors that have adaptation and/or mitigation outcomes, and distils lessons from the cases. The cases cover policy and strategy development (including where climate-smart objectives were not the initial aim), climate risk management through insurance, weather information services and social protection, and agricultural initiatives that have a strong link to climate change adaptation and mitigation.

    Key lessons learned include:

  6. Library Resource
    Articles et Livres
    décembre, 2013
    Chine

    This paper analyzes increasingly individualized herding behavior after the implementation of a grazing ban policy in northern China based on empirical research in 12 pastoralist villages. The findings reveal that de-collectivization of pastureland has not necessarily led to direct changes in individual land use strategies.

  7. Library Resource
    Articles et Livres
    décembre, 2013
    Chine

    Worldwide, changing climates and land use practices are escalating woody-plants encroachment into grasslands, reducing biodiversity and altering ecosystem functions. The loss of alpine grasslands is a major conservation concern as they harbor many rare and endemic species. Alpine meadows in Northwest Yunnan, China, represent a global biodiversity hotspot with high species richness, beta diversity, and endemism. Shrubs have expanded greatly in the region and threaten alpine meadow biodiversity.

  8. Library Resource
    Articles et Livres
    décembre, 2013
    Mongolie

    Mongolia, a vast and sparsely populated semi-arid country, has very little formal road infrastructure. Since the 1990s, private ownership and usage of vehicles has been increasing, which has created a web of dirt track corridors due to the communal land tenure and unobstructed terrain, with some of these corridors reaching over 4 km in width. This practice aids wind- and water-aided erosion and desertification, causing enormous negative environmental effects.

  9. Library Resource
    Articles et Livres
    décembre, 2013
    Chine

    To address land degradation and rural poverty the Chinese government has put in place a series of land conversion programmes in the Loess Plateau area in northern China. In addition to problems arising from unsustainable land use, water resource availability driven in part by climatic forcing is also a threat to livelihoods in this region. To understand climate impacts on farming practice in poor areas of China, field observation and village reconnaissance took place in the summer of 2009 in three selected counties of Shaanxi and Ningxia Province, northern China.

  10. Library Resource
    Articles et Livres
    décembre, 2013
    Chine

    We explored the ecological effects of grassland restoration programs using satellite imagery and field plots sampling data and analyzing the patterns and mechanisms of land cover change and vegetation activities in arid and semiarid China during the period from 1982 to 2008. The grassland cover in the 1980s, 2000 and 2005 was compared before and after the restoration programs. The variability of net primary production (NPP) and rain use efficiency (RUE) were analyzed as indicators of vegetation productivity.

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