Résultats de la recherche | Land Portal

Résultats de la recherche

Showing items 1 through 9 of 2988.
  1. Library Resource

    Forests

    Publication évaluée par des pairs
    janvier, 2012
    États-Unis d'Amérique

    The documented role of United States forests in sequestering carbon, the relatively low cost of forest-based mitigation, and the many co-benefits of increasing forest carbon stocks all contribute to the ongoing trend in the establishment of forest-based carbon offset projects. We present a broad analysis of forest inventory data using site quality indicators to provide guidance to managers planning land acquisition for forest-based greenhouse gas mitigation projects.

  2. Library Resource

    Land

    Publication évaluée par des pairs
    janvier, 2023
    États-Unis d'Amérique

    Urbanization imperils agriculture by converting farmland into uncultivable impervious surfaces and other uses that limit land productivity. Despite the considerable loss of productive croplands due to historic urbanization in the United States, little is known about the locations and magnitudes of extant agricultural land still under threat of future urban expansion. In this study, we developed a spatially explicit machine learning-based method to predict urban development through 2040 under a business-as-usual scenario and explored its occurrence on existing farmland.

  3. Library Resource

    Land

    Publication évaluée par des pairs
    janvier, 2023
    États-Unis d'Amérique

    After the United States’ purchase of Alaska from Russia in 1867, Alaska Native lands have existed in a legal state of aboriginal title, whereby the land rights of its traditional occupants could be extinguished by Congress at any time. With the passage of the Alaska Native Claims Settlement Act (ANCSA) in 1971, however, Alaska Native individuals were given the opportunity to select and secure a title to ancestral lands as federally administered ANCSA 14(c) allotments. Today, though, these allotments are threatened by climate-change-driven erosion.

  4. Library Resource

    Land

    Publication évaluée par des pairs
    janvier, 2023
    Chine, États-Unis d'Amérique

    Land use change is the most important driving factor of terrestrial carbon stock change. Soil is the largest carbon reservoir of terrestrial ecosystems, and the impact of land use change on soil carbon sequestration is related to major issues such as the global warming process and food security. The research can provide a basis for land managers and policy makers to develop appropriate planning strategies for soil carbon sequestration management. Despite the widespread attention of relevant studies, macro reviews are still lacking.

  5. Library Resource

    Land

    Publication évaluée par des pairs
    janvier, 2022
    Chine, États-Unis d'Amérique

    The use of a free-trade zone (FTZ) has emerged as a smart land tool in increasing trading, attracting foreign investment, attempting financial openness and conducting other pilot economic reforms, which adds higher requirements for smart spatial planning, smart industry planning and smart management planning. However, no systematic analysis has been performed, making it difficult to provide deeper insights into FTZs.

  6. Library Resource

    Land

    Publication évaluée par des pairs
    janvier, 2022
    États-Unis d'Amérique

    Land use change analysis provides valuable information for landscape monitoring, managing, and prioritizing large area conservation practices. There has been significant interest in the southeastern United States (SEUS) due to substantial land change from various economic activities since the 1940s. This study uses quantitative data from the Economic Research Service (ERS) for landscape change analysis, addressing land change among five major land types for twelve states in the SEUS from 1945 to 2012.

  7. Library Resource

    Land

    Publication évaluée par des pairs
    janvier, 2022
    Canada

    Respectful and reciprocal relationships with land are at the heart of many Indigenous cultures and societies. Land is also at the core of settler colonialism. Indigenous peoples have not only been dispossessed of land for settler occupation and resource extraction, but the transformation of land into property has created myriad challenges to ongoing struggles of land repatriation and renewal. We introduce several perspectives on land rooted in diverse Indigenous worldviews and contrast them with settler colonial perspectives rooted in Eurocentric worldviews.

  8. Library Resource

    Land

    Publication évaluée par des pairs
    janvier, 2021
    France, Japon, Canada, Royaume-Uni, États-Unis d'Amérique, Allemagne, Australie, Nouvelle-Zélande

    Globally, agricultural soils are being evaluated for their role in climate change regulation as a potential sink for atmospheric carbon dioxide (CO2) through sequestration of organic carbon as soil organic matter. Scientists and policy analysts increasingly seek to develop programs and policies which recognize the importance of mitigation of climate change and insurance of ecological sustainability when managing agricultural soils.

  9. Library Resource

    Land

    Publication évaluée par des pairs
    janvier, 2021
    États-Unis d'Amérique

    Land use changes often lead to soil erosion, land degradation, and environmental deterioration. However, little is known about just how much humans accelerate erosion compared to natural background rates in non-agricultural settings, despite its importance to knowing the magnitude of soil degradation. The lack of understanding of anthropogenic acceleration is especially true for arid regions. Thus, we used 10Be catchment averaged denudation rates (CADRs) to obtain natural rates of soil erosion in and around the Phoenix metropolitan region, Arizona, United States.

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