Skip to main content

page search

Issuesland managementLandLibrary Resource
Displaying 4465 - 4476 of 6741

Effects of input management and crop diversity on non-renewable energy use efficiency of cropping systems in the Canadian Prairie

Journal Articles & Books
December, 2011

Although producers' prime objective may be to increase net returns, many are also interested in conserving and enhancing the quality the soil, water and air resources through adopting more environmentally friendly production practices.

Linking Human and Ecosystem Health: The Benefits of Community Involvement in Conservation Groups

Journal Articles & Books
December, 2006

This study explored the health, well-being, and social capital benefits gained by community members who are involved in the management of land for conservation in six rural communities across Victoria. A total of 102 people participated in the study (64 males; 38 females) comprising 51 members of a community-based land management group and 51 controls matched by age and gender. Mixed methods were employed, including the use of an adapted version of Buckner’s (1988) Community Cohesion Scale.

Surface soil water content spatial organization within irrigated and non-irrigated agricultural fields

Journal Articles & Books
December, 2012

Understanding soil water content, θ, variability is important for monitoring and modeling of land surface processes as well as land and water management practices. With regards to in situ θ probes, it is sometimes assumed that a single local measurement can represent the larger domain, mostly for practical reasons. But there is a substantial amount of variability in θ at the field scale.

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

Policy Papers & Briefs
December, 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 30 scientific papers, distributed by three sections, in particular Economic sciences (18 papers), Agricultural sciences (10) and Engineering sciences (2 papers), and, what is important, except the Ukrainian-language contents (pp.

Revisiting classic water erosion models in drylands: The strong impact of biological soil crusts

Journal Articles & Books
December, 2008

Soil erosion and subsequent degradation has been a contributor to societal collapse in the past and is one of the major expressions of desertification in arid regions. The revised universal soil loss equation (RUSLE) models soil lost to water erosion as a function of climate erosivity (the degree to which rainfall can result in erosion), topography, soil erodibility, and land use/management.

Efficacy of Management Practices to Mitigate the Off-Site Movement and Ecological Risk of Pesticides Transported with Runoff from Agricultural and Turf Systems

Journal Articles & Books
December, 2011

Highly managed biotic systems, such as agricultural crops and managed turf, often require multiple applications of pesticides that may be transported with runoff to areas beyond the intended target site. Pesticides have been detected in surface waters of rural and urban watersheds raising questions concerning their source, potential environmental effects and a need for strategies to reduce their inputs.

Hierarchical responses of plant stoichiometry to nitrogen deposition and mowing in a temperate steppe

Journal Articles & Books
December, 2014
China

BACKGROUND AND AIMS: Stoichiometric relations drive powerful constraints on many ecosystem processes. However, our understanding of the hierarchical responses of plant C:N:P stoichiometry at different levels of biological organization to global change factors remains limited. METHODS: we examined the plant C:N:P stoichiometric responses to N deposition and mowing (hay making) at both species- and community-level by carrying out a 4-year field experiment in the temperate steppe of northern China.

Bee diversity in scrub oak patches 2 years after mow and herbicide treatment

Journal Articles & Books
December, 2012
United States of America

1. Little is known about the diversity and land management response of native solitary bees in globally rare barrens restricted to the northeastern United States. Herein we assess solitary bee diversity in a scrub oak barrens 2 years after a mow and herbicide treatment. 2. Standard bowl‐trap and sweep‐net surveys were repeated six times during June–August in four treated scrub oak patches and a nearby untreated scrub oak patch. 3. Bee richness and total abundance (all specimens) did not differ appreciably between the treated and untreated scrub oak.

Comparison of Soil Bacterial Communities Under Diverse Agricultural Land Management and Crop Production Practices

Journal Articles & Books
December, 2008

The composition and structure of bacterial communities were examined in soil subjected to a range of diverse agricultural land management and crop production practices. Length heterogeneity polymerase chain reaction (LH-PCR) of bacterial DNA extracted from soil was used to generate amplicon profiles that were analyzed with univariate and multivariate statistical methods. Five land management programs were initiated in July 2000: conventional, organic, continuous removal of vegetation (disk fallow), undisturbed (weed fallow), and bahiagrass pasture (Paspalum notatum var Argentine).

Associations Between Weevils (Coleoptera: Curculionidea) and Plants, and Conservation Values in Two Tussock Grasslands, Otago, New Zealand

Journal Articles & Books
December, 2006
New Zealand

Ecosystem level processes and species interactions have become important concepts in conservation and land management. Despite being New Zealand’s greatest contributors to global diversity, native invertebrates have been largely overlooked in the assessment of land values, and their diversity has often been assumed to reflect native plant diversity without justification. Invertebrates can in fact affect plant species composition, and in ecosystems such as New Zealand’s remaining indigenous and semi-modified tussock grasslands can do so in excess of more conspicuous vertebrate grazers.

Management Submodel of the Wind Erosion Prediction System

Journal Articles & Books
December, 2013

This article describes the WEPS management submodel component which simulates the effects of typical cropping management practices, such as tillage, planting, harvesting, irrigation, or residue burning, at an operational level. Such management practices can affect the surface conditions, which in turn affect wind erosion potential. A variety of land management operations is simulated by identifying the primary physical processes involved and representing each individual operation as a sequenced set of those processes.