نتایج جستجو برای: kodir summer rangeland

تعداد نتایج: 56505  

Journal: :Remote Sensing 2016
Donald C. Wehlage John A. Gamon Donnette R. Thayer David V. Hildebrand

Remote sensing is often used to assess rangeland condition and biophysical parameters across large areas. In particular, the relationship between the Normalized Difference Vegetation Index (NDVI) and above-ground biomass can be used to assess rangeland primary productivity (seasonal carbon gain or above-ground biomass “yield”). We evaluated the NDVI–yield relationship for a southern Alberta pra...

Journal: :Journal of environmental management 2009
Shikui Dong James Lassoie K K Shrestha Zhaoli Yan Ekalabya Sharma D Pariya

Rangelands represent one of the most important natural resources in mountainous regions of northern Nepal. However, a poor understanding of the social dimensions of rangeland use has limited their proper management and sustainable development, which represent major challenges for Nepal's resource managers. Institutional development is thought to be a viable solution to this problem and may ulti...

2007
Rex J. Rowley Kevin P. Price Jude H. Kastens

In recent years, steps have been taken to implement a new crop insurance program for rangeland and pasture. Unlike traditionally insured row and cereal crops, which have directly measurable yields, there is no such simple, ideal yield standard for rangeland and pasture because of uncertainties regarding how to generally and objectively quantify annual production. With remotely sensed imagery ac...

2017
Hassen M. Ahmed Zewdu K. Tessema Adugna Tolera Diriba Korecha

Introduction: Rangeland ecosystems provide multiple ecosystem services, including feed resources for wild and domestic herbivores in semi-arid areas. However, under the ever increasing environmental changes, the impact of rainfall variability on the productivity and vegetation dynamics of rangelands are the great challenges that pastoral community are facing today. As a result, the potentials o...

2011
Richard C. Waterman Lance T. Vermeire

Complete rest or grazing deferment is a general recommendation to encourage vegetative recovery following fire in the western United States. However, effects of grazing deferments on animal performance have not been determined. Prescribed fires were individually applied to nine separate, 1.5-ha pastures each year (2006 and 2007) for a total of 18 pastures. Grazing was deferred until spring (16 ...

Journal: :Animal : an international journal of animal bioscience 2010
M Jouven P Lapeyronie C-H Moulin F Bocquier

In the countries surrounding the Mediterranean basin, most of the semi-natural grazing lands are covered by rangelands. Rangelands can be defined as highly heterogeneous natural vegetation communities with high conservation value, growing in harsh environments (poor soils, unfavourable climatic conditions). In the recent socio-economic context, traditional livestock grazing practices that enabl...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2013
Rob Alkemade Robin S Reid Maurits van den Berg Jan de Leeuw Michel Jeuken

Biodiversity in rangelands is decreasing, due to intense utilization for livestock production and conversion of rangeland into cropland; yet the outlook of rangeland biodiversity has not been considered in view of future global demand for food. Here we assess the impact of future livestock production on the global rangelands area and their biodiversity. First we formalized existing knowledge ab...

ژورنال: مرتع 2022

Traditional livestock  husbandry is based on the use of rangeland. According to the existing reports on the imbalance of incomes and expenses of rangeland-based livestock husbandry in the country; Financial evaluation of traditional rangeland-based livestock husbandry is essential. The aim of this study was to evaluate and economically analyze traditional rangeland-based livestock husbandry in ...

One of the key principles in rangeland management is determination of suitable times for exploitation and grazing of rangeland plants in summer and winter pasturelands. This determination of time not only prevents degradation of plant species, but also leads to optimal usage of plant yield. Multiple factors affect plant phenology among which temperature regime has the highest effect on plant de...

2014
D. Richard Cameron Jaymee Marty Robert F. Holland

Land use change in rangeland ecosystems is pervasive throughout the western United States with widespread ecological, social and economic implications. In California, rangeland habitats have high biodiversity value, provide significant habitat connectivity and form the foundation for a number of ecosystem services. To comprehensively assess the conservation status of these habitats, we analyzed...

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