نتایج جستجو برای: rangeland species

تعداد نتایج: 550009  

Journal: :Remote Sensing 2014
Masahiro Tasumi Kiyomi Hirakawa Nobumi Hasegawa Aya Nishiwaki Rikako Kimura

Land degradation of alpine rangeland in Dachigam National Park, Northern India, was evaluated in this study using MODerate resolution Imaging Spectroradiometer (MODIS) land products. The park has been used by a variety of livestock holders. With increasing numbers of livestock, the managers and users of the park are apprehensive about degradation of the grazing land. However, owing to weak infr...

Arezu Alizadeh Moharam Ashrafzadeh Reza Erfanzadeh, Seyed Hamzeh Hosseini Kahnuj

Study on the livestock diet is one of the main priorities in the management of rangeland in Iran. So, this study was conducted to compare preference values of plant species in three age classes of Kaboudeh sheep (one, three and five year old ones) in rangelands of Bavanat, Fars province, Iran. For each age class, four sheep were selected and their grazing times from different plant species were...

Journal: :مرتع و آبخیزداری 0
طاهره صادقی شاهرخت کارشناس ارشد مرتع داری، دانشگاه فردوسی مشهد محمد جنگجو دانشیار گروه مرتع و آبخیزداری دانشکده منابع طبیعی و محیط زیست، دانشگاه فردوسی مشهد منصور مصداقی استاد مدعو، دانشکده منابع طبیعی و محیط زیست دانشگاه فردوسی مشهد

rangeland shrubs may provide mechanical facilitation on their understory plants, by protecting themagainst the livestock grazing. however, such a facilitation effect may vary depending on the rangelandutilization rate. in a field research, mechanical facilitation of rangeland shrubs was compared in ahighly grazed, a moderately grazed and an enclosure site; in an arid rangeland, kakhak, gonabad,...

Forage is one of the main products of rangeland ecosystems, which is threatened by different anthropogenic disturbances. This study was conducted to assess the impact of urbanization, rural development, agriculture extension, road construction and industry on forage production in an arid and semiarid rangeland using InVEST habitat quality model in spring 2018. In 14 rangeland types, thirty 2×1m...

اسدیان, قاسم, سالاری نیک, خدیجه, نائل, محسن ,

The knowledge of rangeland vegetation types and factors influencing on their establishment and stability is essential for sustainable management and regeneration of rangeland areas. With this aim, Gonbad watershed, due to different vegetation types, environmental conditions and grazing managements was studied. The watershed was stratified to homogenous units based on morphology of vegetation ty...

2012
Emily Kachergis Monique E. Rocca Maria E. Fernandez-Gimenez

Kachergis, E. (corresponding author, emily. [email protected]): Rangeland Resources Research Unit, USDA-Agricultural Research Service, 8408 Hildreth Road, Cheyenne, WY, 82009, USA Rocca,M.E. ([email protected]): Department of Ecosystem Science and Sustainability, Colorado State University, Fort Collins, CO, 80523, USA Fernandez-Gimenez,M.E. ([email protected]): De...

2014
Eva K. Strand Karen L. Launchbaugh Ryan Limb L. Allen Torell

Herbivory and fire are natural interacting forces contributing to the maintenance of rangeland ecosystems. Wildfires in the sagebrush dominated ecosystems of the Great Basin are becoming larger and more frequent, and may dramatically alter plant communities and habitat. This synthesis describes what is currently known about the cumulative impacts of historic livestock grazing patterns and short...

Regardless the crop production, range and livestock management is unlikely to be possible. Considering the range production is essential for efficient and effective range management. This study aims to investigate the relationship between the rate of forage production and the effects of climate variables. For this purpose, forage yield of four range species including Artemisia sieberi, Scar...

2010
C. Mapiye

The objective of the current study was to determine seasonal changes in glucose, cholesterol, non-esterified fatty acids (NEFA), serum inorganic phosphorous (SIP), calcium, magnesium and iron concentrations in Nguni and crossbred cattle on the sweet and sour rangelands of the Eastern Cape Province of South Africa. Body weights, body condition scores (BCS) and serum concentrations of energy-rela...

Journal: :Journal of animal science 2004
R K Heitschmidt L T Vermeire E E Grings

The objective of this paper is to examine the sustainability of rangeland agriculture (i.e., managed grazing) on a world-wide basis, with a focus on North America. Sustainability is addressed on three fronts: 1) ecological, 2) economic, and 3) social acceptance. Based on previous and on-going research, we suggest that employment of science-based rangeland grazing management strategies and tacti...

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