Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 4632.
  1. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2016
    Chine

    A large amount of cultivated lands in China is occupied by vacant residential areas, thereby wasting land resources and placing local food security at risk. Therefore, transforming vacant rural residential land back to its previous form is urgently required to maintain the amount of cultivated land and guarantee food security.

  2. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2016
    Chine

    Due to the multiple impacts of landform effects, spatial heterogeneity and land use policies, farmland dynamics in mountainous areas are complicated. This study investigated farmland dynamics based on land use data from a typical mountainous area, Panxi, in China for 1990, 2000 and 2010, discussed the relationship between altitude, slope and farmland changes and presented an analysis of the driving forces of farmland change. Our findings are as follows: (1) from 1990 to 2010, the area of converted farmland was relatively small (313 km2), accounting for only 2.6% of the region’s farmland.

  3. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Chine

    Forests are under pressure from land use change due to anthropogenic activities. Land use change and harvest are the main disturbances of forest landscape changes. Few studies have focused on the relative contributions of different disturbances. In this study, we used the CA-Markov model, a land-use change model, coupled with a forest landscape model, LANDIS-II, to simulate dynamic change in Taihe County, China, from 2010 to 2050. Scenarios analysis was conducted to quantify the relative contributions of land use change and harvest.

  4. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Chine

    When developing land to meet various human needs, conducting assessments of different alternatives regarding their sustainability is critical. Among different alternatives of land-use, devoting land to bioenergy is relatively novel, in high demand, and important for addressing the energy crisis and mitigating carbon emissions. Furthermore, the competition and disputes among limited land-use for bioenergy and the combination of food production and housing are tense. Thus, which alternative of land-use is more sustainable is an important question, yet it is still under-investigated.

  5. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Hong Kong

    In Hong Kong, reclamation is the main method for developing new land use areas as most country parks and mountains are protected under a land policy that emphasizes conservation for their high ecological value. Therefore, the land use for urbanized area in Hong Kong is limited, which has become an issue of concern. Hong Kong’s population is increasing; however, the amount of available land use is insufficient to meet the demand. Developing a high density of buildings is one of the critical strategies of Hong Kong’s government.

  6. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2016
    Global

    Facing widespread poverty and land degradation, Vietnam started a land reform in 1993 as part of its renovation policy package known as “Doi Moi”. This paper examines the impacts of improved land tenure security, via this land reform, on manure use by farm households. As manure potentially improves soil fertility by adding organic matter and nutrients to the soil surface, it might contribute to improving soil productive capacity and reversing land degradation.

  7. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Équateur

    While an increase in the size and number of conservation areas is expected as part of global environmental commitments, at the same time, Protected Area Downgrading, Downsizing, and Degazettement, or PADDD, is becoming more frequent worldwide. This paper analyzes the causal relationships between land claims and human settlements on the one hand and the downsizing process of a protective forest in southeastern Ecuador on the other.

  8. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2016
    Global

    Facing widespread poverty and land degradation, Vietnam started a land reform in 1993 as part of its renovation policy package known as “Doi Moi”. This paper examines the impacts of improved land tenure security, via this land reform, on manure use by farm households. As manure potentially improves soil fertility by adding organic matter and nutrients to the soil surface, it might contribute to improving soil productive capacity and reversing land degradation.

  9. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Global

    Given the scarcity of land resources in most Chinese cities, the fragmentation of construction land use is a greater constraint than expansion for urban sustainability. Therefore, there is an urgent need to quantify the fragmentation level of construction land use for planning and managing practices. This study focuses on residential land use, which is one of the most important types of construction land use within built-up urban areas.

  10. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Chine

    The land tenure reform is the key to sustainable development in rural China. Without challenging the collective ownership of land, the land shareholding cooperative (LSC) system came into being and is being strongly endorsed by the authority: It re-collectivizes the contracted land from peasants and enables better regional planning and large-scale modern agricultural production. This paper studies a specific LSC (Shanglin LSC in the Sunan region of the Yangtze River Delta) based on our fieldwork.

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