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Showing items 1 through 9 of 68.
  1. Library Resource

    Volume 10 Issue 3

    Peer-reviewed publication
    March, 2021
    China, Russia, United States of America

    With the rapid economic growth and urbanisation process, a large amount of cultivated land has been permanently transformed into urban land. The protection of cultivated land has received widespread attention, and ecological compensation has been an effective means of restraining the decrease in cultivated land. Different from previous approaches to and methods of studying cultivated land’s ecological compensation, this study proposes a new behavioural perspective.

  2. Library Resource

    Volume 10 Issue 2

    Peer-reviewed publication
    February, 2021
    Australia, Belgium, Canada, Micronesia, United States of America

    Forest classifications by disturbance permit designation of multiple types of both old growth forests and shorter-lived forests, which auto-replace under severe disturbance, and also identification of loss of the disturbance type and associated forest. Historically, fire and flooding disturbance regimes, or conversely, infrequent disturbance, produced unique forests such as disturbance-independent forests of American beech (Fagus grandifolia), eastern hemlock (Tsuga canadensis), and sugar maple (Acer saccharum) in the Eastern United States.

  3. Library Resource

    Volume 9 Issue 9

    Peer-reviewed publication
    September, 2020
    China, Russia, United States of America

    The rapid growth of China’s economy since the reform in 1978 should be largely attributed to urbanization. Nonetheless, in terms of farmland productivity, urbanization may lead to perverse incentives and thus threaten food security. On the one hand, the requisition–compensation balance of farmland (RCBF) policy could reduce farmland productivity because of a “superior occupation and inferior compensation”; on the other hand, urbanization promotes the transfer of the younger labor force and thus reduces the productivity of the agricultural labor force.

  4. Library Resource
    Regulations
    September, 2013
    Canada

    The present Regulations are made under the Land Surveyors Act. The Regulations lay down provisions relating to the activities of land surveyors. For the purpose of the present Regulations “approved education program” means an education program that prepares a person for entry to the profession of land surveying, as approved by an examining body determined by the Council.

  5. Library Resource
    Legislation
    January, 1941
    United States of America

    This Chapter of the Florida Statutes contains multiple sets of general agricultural laws of Florida. The Chapter states that it is the public policy of this state and the purpose of this act to achieve and maintain the production of agricultural commodities for food and fiber as an essential element for the survival of mankind.

  6. Library Resource
    Journal Articles & Books
    December, 2010
    Canada

    Feedbacks between climate warming and fire have the potential to alter Arctic and sub-Arctic vegetation. In this paper we assess the effects and interactions of temperature and wildfire on plant communities across the transition between the Arctic and sub-Arctic. Mackenzie Delta region, Northwest Territories, Canada. We sampled air temperatures, green alder (Alnus viridis ssp. fruticosa) cover, growth, reproduction and age distributions, and overall plant community composition on burned and unburned sites across a latitudinal gradient.

  7. Library Resource
    Journal Articles & Books
    December, 2012
    United States of America

    Chinese and European privets are among the most aggressive invasive shrubs in forestlands of the southern United States. We analyzed extensive field data collected by the U.S. Forest Service covering 12 states to identify potential determinants of invasion and to predict likelihood of further invasion under a variety of possible management strategies.

  8. Library Resource
    Peer-reviewed publication
    March, 2015
    Canada

    Canadian forests are often perceived as pristine and among the last remaining wilderness, but the majority of them are officially managed and undergo direct land use, mostly for wood harvest. This land use has modified their functions and properties, often inadvertently (e.g., age structure) but sometimes purposefully (e.g., fire suppression). Based on a review of the literature pertaining to carbon cycling, climate regulation, and disturbances from logging, fire, and insect outbreaks, we propose five scientific principles relevant for Canadian managed forests.

  9. Library Resource
    Journal Articles & Books
    December, 1996
    Mali, Sweden, Canada, Italy

    This issue of Unasylva considers some of the issues related to forest-dwelling and forest-dependent people, and particularly their role in and relationship to sustainable forest management.

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