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Long‐Term Durum Wheat‐Based Cropping Systems Result in the Rapid Saturation of Soil Carbon in the Mediterranean Semi‐arid Environment

Journal Articles & Books
Décembre, 2016

Climate, soil physical–chemical characteristics, land management, and carbon (C) input from crop residues greatly affect soil organic carbon (SOC) sequestration. According to the concept of SOC saturation, the ability of SOC to increase with C input decreases as SOC increases and approaches a SOC saturation level. In a 12‐year experiment, six semi‐arid cropping systems characterized by different rates of C input to soil were compared for ability to sequester SOC, SOC saturation level, and the time necessary to reach the SOC saturation level.

[Bulletin of Agrarian Science of the Cis-Black sea Region]

Policy Papers & Briefs
Décembre, 2008
Ukraine

The present e-collection of scientific works deals with results of research on issues of economy, agrarian and engineering sciences studied by researchers, post-graduate students, magisters and students of Mykolayiv State Agrarian Univ. and other educational establishments of the Ministry of Agrarian Policy of Ukraine are elucidated. The issue comprises 36 scientific papers, distributed by three sections, in particular Economic sciences (22 papers), Agricultural sciences (7) and Engineering sciences (7 papers), and, what is important, except the Ukrainian-language contents (pp.

[Bulletin of Agrarian Science of the Cis-Black Sea Region]

Policy Papers & Briefs
Décembre, 2009
Ukraine

The present e-collection of scientific works deals with results of research on issues of economy, agrarian and engineering sciences studied by researchers, post-graduate students, magisters and students of Mykolayiv State Agrarian Univ. and other educational establishments of the Ministry of Agrarian Policy of Ukraine are elucidated. The issue comprises 32 scientific papers, distributed by three sections, in particular Economic sciences (23 papers), Agricultural sciences (7) and Engineering sciences (2 papers), and, what is important, except the Ukrainian-language contents (pp.

Consider the source: The impact of media and authority in outreach to private forest and rangeland owners

Journal Articles & Books
Décembre, 2012
États-Unis d'Amérique

Over half of the United States is privately owned. Improving environmental sustainability requires that the scientific and management communities provide effective outreach to the many landowners making decisions about land use and management practices on these lands. We surveyed California forest and rangeland owners in ten counties throughout the state to assess the impact of existing outreach and identify gaps in information distribution and content.

Linking irreplaceable landforms in a self‐organizing landscape to sensitivity of population vital rates for an ecological specialist

Journal Articles & Books
Décembre, 2015

Irreplaceable, self‐organizing landforms and the endemic and ecologically specialized biodiversity they support are threatened globally by anthropogenic disturbances. Although the outcome of disrupting landforms is somewhat understood, little information exists that documents population consequences of landform disturbance on endemic biodiversity.

Does watershed size affect simple mathematical relationships between flow velocity and discharge rate at watershed outlets on the Loess Plateau of China

Journal Articles & Books
Décembre, 2012
Chine

An empirical power function model of V=kQᵐ has been used worldwide to describe the relationship between flow velocity (V, ms⁻¹) and discharge rate (Q, m³s⁻¹) for rill and open channel flows. However, it has seldom been applied to watershed outlet channels taking into account the impacts of watershed size. In this study, observed data from four experimental watersheds of different sizes, ranging from about 1 to 100km², were used to verify the stability of the power function model for use at a watershed level on the Loess Plateau.

Mail and Web-Based Survey Administration: A Case Study With Recreational Users of Virginia's Wildlife Management Areas

Journal Articles & Books
Décembre, 2013

Web-based surveys cost less, obtain responses more quickly, and provide more efficient data management compared to mail surveys; however, the potential inability to reach a random, representative sample of the public raises concerns about the validity and reliability of Web-based surveys. We surveyed recreational users of Virginia wildlife management areas with either a Web-based or mail instrument, based on user preference for contact. Response rates for both modes were comparable, but Web-based surveys were more complete and returned more rapidly than were mail surveys.

Why Do Cattle Ranchers Participate in Conservation Easement Agreements? Key Motivators in Decision Making

Journal Articles & Books
Décembre, 2014

When communicating with farmers and ranchers, land conservation professionals would be better equipped if they understood key influences on their target audience's decisions to permanently preserve their land from development. This study predicted key factors influencing rancher engagement in a conservation easement (CE) agreement. Specifically, theory of planned behavior, trust, environmental identity, past behavior, perceptions of specific CE characteristics and selected participant demographics were used as predictors.

‘Tolerable’ hillslope soil erosion rates in Australia: Linking science and policy

Journal Articles & Books
Décembre, 2011
Australie

This paper reviews water-borne soil erosion in Australia in the context of current environmental policy needs. Sustainability has emerged as a central tenet of environmental policy in Australia and water-borne hillslope soil erosion rates are used as one of the indicators of agricultural sustainability in State of the Environment reporting. We review attempts to quantify hillslope erosion rates over Australia and we identify areas at risk of exceeding natural baseline rates. We also review historical definitions of sustainable, or ‘tolerable’ erosion rates, and how to set these rates.