Resultados da pesquisa | Land Portal

Resultados da pesquisa

Mostrando itens 1 de 9 de 1505.
  1. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Global

    The surface fluxes calculated in land surface models (LSMs) are sensitive to the determination of the stability parameter. Further, calculation of the surface fluxes over the Tibetan Plateau (TP) is crucial in the simulation of regional and global weather and climate. In this study, we use 2-year micrometeorological data measured from Shiquanhe, located in the western TP, to evaluate the performance of the widely used Noah LSM with five stability parameterization schemes.

  2. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Global

    To better understand the impacts of infrastructure investment on economic growth and, we used Cobb-Douglas production function model to develop the stock of public infrastructure capital into the economic growth model. It applies spatial panel data model effect analysis to statistical data of the Yangtze River Economic Zone with 131 cities from 2003 to 2016 and investigates the relationship between different types of public infrastructure capital stock and regional economic growth in different periods.

  3. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Estados Unidos

    Soil microorganisms play an important role in agricultural ecosystems, but their response to organic fertilizer application has not been thoroughly elucidated. Thus, high-throughput sequencing was used to investigate the responses of soil bacterial to organic fertilizer amendment (composted from pig manure) in the field during the entire growth cycle of maize plants.

  4. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Global

    Scale effects are inherent in spatial analysis. Quantitative knowledge about them is necessary for properly interpreting and scaling analysis results. The objective of this study was to systematically model patch area scaling and the associated uncertainty. A hybrid approach was taken to tackle the difficulty involved. Recognizing that patch’s size and shape play the key role in shaping its scaling behavior, a function model of patch area scaling based on patch morphology was first conceptually formulated.

  5. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Guatemala

    Unauthorized migration under global regimes of border and immigration enforcement has become more risky and costly than ever. Despite the increasing challenges of reaching, remaining in, and remitting from destination countries, scholarship exploring the implications of migration for agricultural and environmental change in migrant-sending regions has largely overlooked the prevalent experiences and consequences of “failed” migration.

  6. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Eslováquia

    The paper aims to deepen our understanding of the relationship and the impact of creative actors on regional development and investigates the nexus between them. The novelty of the paper lies in constructing an original criteria matrix of creative actors’ indicators which might serve as a basis for further research and policy implications. The original criteria matrix consists of two groups of indicators measuring the creative people and creative capital in the region, their mutual relationships and impact on regional development.

  7. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Global

    Frequent flooding worldwide, especially in grazing environments, requires mapping and monitoring grazing land cover and pasture quality to support land management. Although drones, satellite, and machine learning technologies can be used to map land cover and pasture quality, there have been limited applications in grazing land environments, especially monitoring land cover change and pasture quality pre- and post-flood events. The use of high spatial resolution drone and satellite data such as WorldView-4 can provide effective mapping and monitoring in grazing land environments.

  8. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Baamas, China, Grécia, Noruega, Vaticano

    The spatial distribution of potentially toxic elements in land near a heavily loaded highway in the West Attica region (Greece) is discussed. This study aimed to investigate the extent of soil contamination with trace elements on land in the margin of highways. The concentration of thirty-five elements in topsoil, car ash, and road sediment bulk samples was determined. Statistical and spatial analysis was applied for evaluating the geochemical dispersion of the examined elements. Geo-accumulation index was estimated.

  9. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Gana

    Two-thirds of rural Ghanaians are farmers, and farming is almost the only income source for Ghana’s forest-fringe communities. Some farmers adopt some agricultural practices to augment their operations while others do not. We examined the factors that influence farmers’ adoption and intensity of adoption of agricultural practices, namely, chemical fertilizers, pesticides, herbicides, improved seeds, animal manure, and crop rotation.

  10. Library Resource

    Volume 10 Issue 3

    Publicação revisada por pares
    Março, 2021
    Tunísia

    Natural rangelands occupy about 5.5 million hectares of Tunisia’s landmass, and 38% of this area is in Tataouine governorate. Although efforts towards natural restoration are increasing rapidly as a result of restoration projects, the area of degraded rangelands has continued to expand and the severity of desertification has continued to intensify. Any damage caused by disturbances, such as grazing and recurrent drought, may be masked by a return of favorable rainfall conditions.

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