Results 201 to 210 of about 2,250 (241)
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Desert rangelands, degradation and nutrients
2000It is well recognized that rangeland environments, especially degraded environments, are relatively infertile. Though arid lands are moisture limited, it is often stated that they are nutrient regulated. A discussion of rangeland soil nutrients relative to landscape degradation should include: (1) dynamics of nutrient distributions; (2) soil properties
Kris M. Havstad +2 more
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Ecological Restoration and Control of Rangeland Degradation: Rangeland Management Interventions
2010Synopsis The problems and prospects for reversing land degradation and for ecological restoration of degraded landscapes are reviewed. Animal husbandry on rangelands in NW China is under great pressure. This pressure is leading to a major transformation of the livestock sector, from one that is resource-driven (based on available forage, water, crop ...
Victor Squires, Zhang Degang, Hua Limin
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A Conceptual Model of Arid Rangeland Degradation
BioScience, 1994A major concern of managers of arid and semiarid rangelands is the progressive loss of secondary productivity and diversity over the past century (Breman and de Wit 1983, Dean and Macdonald in press, Downing 1978, Friedel et al. 1990, Le Houerou 1989, Schlesinger et al. 1990, Talbot 1961, West 1993).
Suzanne J. Milton, W. Roy Siegfried
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A MULTIDISCIPLINARY MODEL FOR ASSESSING DEGRADATION IN MEDITERRANEAN RANGELANDS
Land Degradation & Development, 2012ABSTRACTThis paper presents an annual multidisciplinary, non‐spatial model which formalizes the relationships linking the dynamics of shrubs, herbs, soil, livestock and farmers' behaviour with possible exogenous drivers of degradation, such as weather and prices.
Ibáñez, Javier +4 more
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Ruminal degradation characteristics of some African rangeland grasses
The Journal of Agricultural Science, 1995SUMMARYThe seasonal rate and extent of dry matter (DM) and neutral detergent fibre (NDF) degradation of the African sourveld grassesAlloteropsis semialata, Andropogon appendiculatus, Cynodon dactylon, Elionurus muticus, Eragrostis plana, Harpochloa falx, Heteropogon contortus, Hyparrhenia hirta, Microchloa caffra, Themeda triandraandTristachya ...
O'Reagain, Peter J. +2 more
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Economic policies and rangeland degradation in Botswana
Journal of International Development, 1990AbstractThe author addresses himself to the factors responsible for current trends in Botswana's rangeland degradation. and what the Government could do to arrest it. He considers the evidence for degradation, its causes and effects. Economic policies to promote the livestock sector – especially the price of meat and livestock subsidies – have ...
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Rehabilitation of Degraded Rangeland Under Optimal Management Decisions
1990Rangeland in the arid zone of Western Australia has been degraded by sheep overstocking. The strategies available for restoring the productivity of degraded rangelands are limited. In those situations where there is still reasonable residual soil and vegetation despite moderate erosion and depletion of palatable forage plants, rehabilitation through ...
Wang, K. +3 more
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Principles, problems, and priorities for restoring degraded rangelands.
The Rangeland Journal, 1990Past and current research on restoring degraded rangelands was reviewed at a workshop held in July 1989 by the CSIRO Division of Wildlife and Ecology. Basic ecological and economic principles for restoration, and prevention of further degradation, were explored and priorities for future research were identified.
JA Ludwig, KC Hodgkinson, RD Macadam
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Rangeland Degradation Control in China: A Policy Review
2016In order to prevent rangeland degradation and to recover the ecological services provided by the rangeland ecosystem, China has implemented a series of ecological policies (EPs) since the beginning of the 21st century. Nevertheless, the impacts of these policies are greatly debated in terms of ecosystem, herders’ livelihoods, animal husbandry and ...
Wenjun Li, Yanbo Li, null Gongbuzeren
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Processes in rangeland degradation, rehabilitation and recovery.
2009Copyright © CAB International 2009 ; The mechanisms and processes of degradation and rehabilitation are analysed. The distinction is made between restoration and rehabilitation at the landscape level and the implications for whole rangeland ecosystems are considered.
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