New Technologies to Reclaim Arid Lands User's Manual

New Technologies to Reclaim Arid Lands User's Manual
Author:
Publisher:
Total Pages: 218
Release: 2002
Genre:
ISBN:

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Approximately 70 percent of all U.S. military training lands are located in arid and semi-arid areas. Training activities in such areas frequently adversely affect vegetation, damaging plants and reducing the resilience of vegetation to recover once disturbed. Fugitive dust resulting from a loss of vegetation creates additional problems for human health, increasing accidents due to decreased visibility, and increasing maintenance costs for roads, vehicles, and equipment. Under conventional technologies to mitigate these impacts, it is estimated that up to 35 percent of revegetation projects in arid areas will fail due to unpredictable natural environmental conditions, such as drought, and reclamation techniques that were inadequate to restore vegetative cover in a timely and cost-effective manner. New reclamation and restoration techniques are needed in desert ranges to help mitigate the adverse effects of military training and other activities to arid-land environments. In 1999, a cooperative effort between the U.S. Department of Energy (DOE), the US. Department of Defense (DoD), and selected university scientists was undertaken to focus on mitigating military impacts in arid lands. As arid lands are impacted due to DoD and DOE activities, biological and soil resources are gradually lost and the habitat is altered. A conceptual model of that change in habitat quality is described for varying levels of disturbance in the Mojave Desert. As the habitat quality degrades and more biological and physical resources are lost from training areas, greater costs are required to return the land to sustainable levels. The purpose of this manual is to assist land managers in recognizing thresholds associated with habitat degradation and provide reclamation planning and techniques that can reduce the costs of mitigation for these impacted lands to ensure sustainable use of these lands. The importance of reclamation planning is described in this manual with suggestions about establishing project objectives, scheduling, budgeting, and selecting cost-effective techniques. Reclamation techniques include sections describing: (1) erosion control (physical, chemical, and biological), (2) site preparation, (3) soil amendments, (4) seeding, (5) planting, (6) grazing and weed control, (7) mulching, (8) irrigation, and (9) site protection. Each section states the objectives of the technique, the principles, an in-depth look at the techniques, and any special considerations as it relates to DoD or DOE lands. The need for monitoring and remediation is described to guide users in monitoring reclamation efforts to evaluate their cost-effectiveness. Costs are provided for the proposed techniques for the major deserts of the southwestern U.S. showing the average and range of costs. A set of decision tools are provided in the form of a flow diagram and table to guide users in selecting effective reclamation techniques to achieve mitigation objectives. Recommendations are provided to help summarize key reclamation principles and to assist users in developing a successful program that contributes to sustainable uses of DoD and DOE lands. The users manual is helpful to managers in communicating to installation management the needs and consequences of training decisions and the costs required to achieve successful levels of sustainable use. This users manual focuses on the development of new reclamation techniques that have been implemented at the National Training Center at Fort Irwin, California, and are applicable to most arid land reclamation efforts.

Desertification of Arid Lands

Desertification of Arid Lands
Author: Harold E. Dregne
Publisher: Taylor & Francis
Total Pages: 264
Release: 1983
Genre: Business & Economics
ISBN: 9783718601684

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First Published in 1983. Routledge is an imprint of Taylor & Francis, an informa company.

Range Sustainability

Range Sustainability
Author:
Publisher:
Total Pages: 1
Release: 1999
Genre:
ISBN:

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Seventy percent of US Department of Defense training and testing areas is on arid and semiarid land. Testing and training activities are often more devastating to arid lands than more mesic areas and, consequently, can threaten the continuation of military testing and training operations in these areas. Current gaps exist in diagnostic capabilities to distinguish among various degrees of sustainable and nonsustainable impacts from earth-disturbing activities in desert ecosystems. Work is ongoing to develop innovative remote sensing techniques to rapidly characterize impacts of military training and testing on arid environments. The diagnostic techniques include new rapid detection methods of image collection and laser induced fluorescence imagery techniques to provide early detection of the condition of stressed plants. Innovative image processing techniques will be assessed which will provide rapid assessment of vegetation parameters used in various US Department of Defense environmental management models such as the Army Training and Testing Area Carrying Capacity. New and cost-effective techniques for revegetation of disturbed training lands will be examined at Fort Irwin--the National Training Center in the Mojave Desert of California.

Reclamation of Disturbed Arid Lands Maximizing Effectiveness to Ensure Mission Sustainability

Reclamation of Disturbed Arid Lands Maximizing Effectiveness to Ensure Mission Sustainability
Author:
Publisher:
Total Pages: 1
Release: 2000
Genre:
ISBN:

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Much of US Department of Defense training and testing areas is on arid and semiarid land. Testing and training activities are often more devastating to arid lands than more mesic areas, and consequently, can threaten the continuation of military testing and training operations in these areas. Under current technology, it is estimated that up to 35% of revegetation projects in arid areas will fail. Current gaps exist in distinguishing among various degrees of sustainable and nonsustainable impacts from earth-disturbing activities in desert ecosystems. Research is also needed to determine how to optimize reclamation efforts to ensure sustainability on training lands. This project included the establishment of reclamation study plots representing three levels of disturbance ranging from moderate to very heavily disturbed sites. Several new and cost-effective techniques for revegetation of disturbed training lands are being examined at Fort Irwin--the National Training Center in the Mojave Desert of California. Major treatments include novel irrigation designs, amendments to enhance soil microbes and nutrient cycling, soil stabilization, decompaction of soils, and use of adapted species. These treatments at Fort Irwin are being examined at 13 locations that have different soil conditions. Results of the first year of these trails will be presented.