Results 181 to 190 of about 2,098,788 (223)

Desert rangelands, degradation and nutrients

2000
It 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, J. E. Herrick, W. H. Schlesinger   +2 more
openaire   +1 more source

A Conceptual Model of Arid Rangeland Degradation

BioScience, 1994
A 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
openaire   +1 more source

Ecological Restoration and Control of Rangeland Degradation: Rangeland Management Interventions

2010
Synopsis 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
openaire   +1 more source

Development of a soil quality index for characterizing effects of land‐use changes on degradation and ecological restoration of rangeland soils in a semi‐arid ecosystem

Land Degradation and Development, 2020
The aim of this research was to study the influence of land‐use changes on degradation and ecological restoration of rangeland soils by quantifying 15 soil attributes and the subsequent development of a soil quality index (SQI).
F. Raiesi, Soroosh Salek-Gilani
semanticscholar   +1 more source

Economic policies and rangeland degradation in Botswana

Journal of International Development, 1990
AbstractThe 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 ...
openaire   +1 more source

Multi-temporal Landsat imagery and MSAVI index for monitoring rangeland degradation in arid ecosystem, case study of Biskra (southeast Algeria)

Environmental Monitoring & Assessment, 2023
Amina Belhadj, N. Boulghobra, Fatma Demnati Allache   +2 more
semanticscholar   +1 more source

Principles, problems, and priorities for restoring degraded rangelands.

The Rangeland Journal, 1990
Past 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
openaire   +1 more source

Processes in rangeland degradation, rehabilitation and recovery.

2009
Copyright © 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.
openaire   +1 more source

Assessment of rangeland degradation and development of a strategy for rehabilitation

Remote Sensing of Environment, 2004
We use satellite data from different sensor systems to analyze and explain the causes, processes, and impacts of desertification in a Steppe grazing area in Syria, with the aim of supporting the formulation of a strategy for rehabilitating desertified areas. Through the mapping of parameters such as barley fields, eolian sand distribution, and drainage
Roland Geerken, Mohammad Ilaiwi
openaire   +1 more source

Climate rather than overgrazing explains most rangeland primary productivity change in Mongolia.

Science
Rangelands are Earth's dominant land type, supporting the livelihoods of more than 2 billion people. Concerns about rangeland degradation typically focus on overgrazing. But climate change may be a greater culprit.
Avralt-Od Purevjav, Tumenkhusel Avirmed, Steven W Wilcox, Christopher B. Barrett   +3 more
semanticscholar   +1 more source