Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 58.
  1. Library Resource
    Articles et Livres
    décembre, 2009
    Chine, Espagne, Inde, Brésil, Nouvelle-Zélande

    Data from the 1990-1994 period presented in the "Brazil's Initial National Communication" document indicated that the country is one of the top world greenhouse gas (GHG) emitters. A large majority of Brazil's GHG emissions come from deforestation mainly of the Amazon biome for agriculture and livestock land uses. This unique inventory is now out of date.

  2. Library Resource
    Articles et Livres
    décembre, 2009
    Chine, Espagne, Inde, Brésil, Nouvelle-Zélande

    Data from the 1990-1994 period presented in the "Brazil's Initial National Communication" document indicated that the country is one of the top world greenhouse gas (GHG) emitters. A large majority of Brazil's GHG emissions come from deforestation mainly of the Amazon biome for agriculture and livestock land uses. This unique inventory is now out of date.

  3. Library Resource
    Documents de politique et mémoires
    novembre, 2009
    Chine

    To assess the land use effects on soil micronutrients, this study examined the profile variation and storage of DTPA- extractable iron, manganese, copper and zinc at the depth of 0-150 cm of an aquic brown soil under four land use patterns, i.e. paddy, maize, and fallow fields and woodland, over 14 years in an ecological experimental station of northeastern China. Our results show that land use, soil depth, and their interactions significantly influenced micronutrient concentrations. Micronutrients concentrations decreased with soil depth.

  4. Library Resource
    Documents de politique et mémoires
    mars, 2009
    Inde, Brésil, Chine, États-Unis d'Amérique

    We quantify the emergence of biofuel markets and its impact on U.S. and world agriculture for the coming decade using the multi-market, multi-commodity international FAPRI (Food and Agricultural Policy Research Institute) model. The model incorporates the trade-offs between biofuel, feed, and food production and consumption and international feedback effects of the emergence through world commodity prices and trade.

  5. Library Resource
    Articles et Livres
    août, 2009
    Chine

    Literatures about factors affecting demand scale of rural land circulation are reviewed. Based on this, a total of 5 deficiencies in these literatures are put forward, which are the inconsistency between model selection and sample data type in some literatures, the lack of analysis from the perspective of internal family, the incomplete or inaccurate research factors, the lack of analysis on causation, and the mixture of inflow and outflow of land circulation.

  6. Library Resource
    Documents et rapports de conférence
    décembre, 2009
    Chine

    China’s economic reforms make the farmers face the risk of land reallocation and adjustment, raising the questions about the impact of land reallocation on farm productivity and efficiency. Deep understanding what determines land reallocation, whether and to what extent farm productivity and efficiency are affected by the frequency of land reallocation could help policy makers introduce better targeted rural development policies.

  7. Library Resource
    Documents et rapports de conférence
    décembre, 2009
    États-Unis d'Amérique, Philippines, Malaisie, Chine, Indonésie, Australie, Canada, Thaïlande, Nouvelle-Zélande

    The emerging biofuel sector has drawn great interest as an alternative source of fuel for transportation. The expansion of biofuels greatly impacts world agricultural markets, since currently, the primary feedstocks for ethanol and biodiesel production are field crops and their derived products. There is great interest in the potential of countries to expand their biofuel sectors through increased production of feedstocks. The long-term potential for developing first-generation biofuels in many countries depends on a large and constant supply of feedstocks.

  8. Library Resource
    Articles et Livres
    mai, 2009
    Chine

    This paper summarizes the regional situation of Henan Province of China, and introduces the principle of ecological footprint mode, as well as computing formulas of ecological footprint and ecological capacity. According to the related data of Henan Province from 1998 to 2007, this paper firstly calculates the per capita ecological footprint and per capita ecological capacity of Henan Province. Result indicates that cultivated land in Henan Province shows ecological surplus with sustainable land use. And ecological surplus has increased since the year 2003.

  9. Library Resource
    Articles et Livres
    mars, 2009
    Turquie, Japon

    This study was carried out to determine the impacts of climate change on aridity and land cover in Turkey. Data for future (2070s) climate change, according to present conditions (1990s), were estimated from the prediction results of a regional climate model (RCM). The RCM, which was developed in Japan, is based on the MRI model. The potential impacts of climate change were estimated according to the A2 scenario of Special Report on Emissions Scenarios (SRES).

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