Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 4606.
  1. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2016
    Brésil

    Unsustainable farming practices such as shifting cultivation and slash-and-burn agriculture in the humid tropics threaten the preservation of the rainforest and the health of the local and global environment. In weathered soils prone to cohesion in humid tropic due to low Fe and carbon content and the enormous amounts of P that can be adsorbed, sustainable soil use is heavily dependent on the availability and efficient use of nutrients.

  2. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2016
    Chine

    Land degradation monitoring is of vital importance to provide scientific information for promoting sustainable land utilization. This paper presents an expert knowledge and BP-ANN-based approach to detect and monitor land degradation in an effort to overcome the deficiencies of image classification and vegetation index-based approaches.

  3. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Global

    The monsoon season is a natural phenomenon that occurs over the Asian continent, bringing extra precipitation which causes significant impact on most tropical watersheds. The tropical region’s countries are rich with natural rainforests and the economies of the countries situated within the region are mainly driven by the agricultural industry. In order to fulfill the agricultural demand, land clearing has worsened the situation by degrading the land surface areas.

  4. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Ouganda

    The extent of land affected by degradation in Uganda ranges from 20% in relatively flat and vegetation-covered areas to 90% in the eastern and southwestern highlands. Land degradation has adversely affected smallholder agro-ecosystems including direct damage and loss of critical ecosystem services such as agricultural land/soil and biodiversity. This study evaluated the extent of bare grounds in Nakasongola, one of the districts in the Cattle Corridor of Uganda and the yield responses of maize (Zea mays) and common bean (Phaseolus vulgaris L.) to different tillage methods in the district.

  5. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    États-Unis d'Amérique

    This study examines the productivity and resilience of agroecosystems in the Korean Peninsula. Having learned valuable lessons from a Chapman University project funded by the United States Department of Agriculture which concentrated on the semi-arid region of southwestern United States, our joint Korea—Chapman University team has applied similar methodologies to the Korean Peninsula, which is itself an interesting study case in the mid-latitude region.

  6. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Afrique du Sud

    Eastern Cape Province in South Africa has experienced extreme drought events during the last decade. In South Africa, different land management systems exist belonging to two different land tenure classes: commercial large scale farming and communal small-scale subsistence farming. Communal lands are often reported to be affected by land degradation and drought events among others considered as trigger for this process.

  7. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Bangladesh

    “Bangladesh faces many ecological challenges, including air and water contamination, land degradation, and waste management”. Bangladesh faces many ecological challenges, including air and water contamination, land degradation, and waste management. This study was designed to investigate the extent and nature of environmental accounting and reporting of listed banks in Bangladesh in 12 major categories. Information was collected from the annual reports of 20 banks listed on the Dhaka Stock Exchange for the period 2010 to 2014.

  8. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Global

    Land provides a host of ecosystem services, of which the provisioning services are often considered paramount. As the demand for agricultural products multiplies, other ecosystem services are being degraded or lost entirely. Finding a sustainable trade-off between food production and one or more of other ecosystem services, given the variety of stakeholders, is a matter of optimizing land use in a dynamic and complex socio-ecological system. Land degradation reduces our options to meet both food demands and environmental needs.

  9. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Global

    Vegetation dynamics in relation to climatic changes and anthropogenic activities is critical for terrestrial ecosystem management. The objective of this study was to investigate spatiotemporal change of vegetation and their driving forces during growing seasons (between April and October and including the spring, summer and autumn) in the Tumen River Basin (TRB) using Normalized Difference Vegetation Index (NDVI) and climate data spanning from 2000 to 2015. A linear regression, Pearson correlation coefficients and the residual trend (RESTREND) was applied for this study.

  10. Library Resource

    Sustainability

    Publication évaluée par des pairs
    janvier, 2017
    Chine

    Pressing issues such as water and food security, health, peace, and poverty are deeply linked to land degradation. We use China’s major land restoration programs as a case offering perspective on the existing problems in China’s major policies for improving degraded land and maintaining land resources in three dimensions.

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