نتایج جستجو برای: modified rangeland

تعداد نتایج: 253506  

Journal: :journal of rangeland science 2015
azam khosravi moshizi gholam ali heshmati abdol rassoul salman mahiny

carbon sequestration in rangeland ecosystems has been identified as a suitable strategy to offset greenhouse gas emissions that information of carbon sequestration hotspots is a good tool to improve rangeland management. objectives for this study were to assessment potential carbon sequestration in various rangeland types, to identify carbon sequestration hotspots and to study the effective fact...

Dina Askarizadeh Mohammad Hassan Jouri, Mohammad Mahdavi, Vahid Rahimi

Mountainous rangeland ecosystems have a highly delicate position in ecologic areabecause of severe environmental conditions and having wildlife and livestock. Knowing andrealizing the biotic and abiotic components, which have an interaction with each other in thisecosystem, perform the most important role in to desirable management of it. The systematicmanagement is one of the managing features...

Journal: :Turkish Journal of Veterinary & Animal Sciences 2021

The aim of this study is to determine the effect rangeland quality Ankara goats fed on some natural in mohair quality. research was carried out 3 different rangelands province. Crude protein, ether extract, Ca, Fe, N, energy contents and digestibility, vitro gas production, relative feed values good plants were highest compared other rangelands, but crude fiber, acid detergent neutral fiber low...

2005
E. E. SANO A. R. HUETE

In this study, we investigated the feasibility of using the C-band European Remote Sensing Satellite (ERS-1) synthetic aperture radar (SAR) data to estimate surface soil roughness in a semiarid rangeland. Radar backscattering coefficients were extracted from a dry and a wet season SAR image and were compared with 47 in situ soil roughness measurements obtained in the rocky soils of the Walnut G...

2005
THOMAS A. MONACO

We conducted greenhouse experiments to compare photosynthetic and growth responses of 2 invasive annual grasses (downy brome = Bromus tectorum L. and medusahead = Taeniatherum caput-medusae (L.) [Nevski]), 6 caespitose grasses, and 7 rhizomatous grasses to the herbicide sulfosulfuron (1-(2-ethylsulfonylimidazo[1,2-a]pyridin-3-ylsulfonyl)-3-(4,6-dimethoxypyrimidin-2-yl)urea). Our objectives were...

2007
ANDREW N. FRENCH THOMAS J. SCHMUGGE JERRY C. RITCHIE ANN HSU FREDERIC JACOB KENTA OGAWA

Detecting land cover change over semi-arid rangeland is important for monitoring vegetation responses to drought, population expansion, and changing agricultural practices. Such change can be detected using vegetation indices, but these do not represent non-green vegetation and are dominated by seasonal changes. An alternative is to observe spatial changes in thermal emissivities, a measure tha...

Journal: :Revue scientifique et technique 2016
B Butt

In this review, the author discusses how pastoralism, and its many constituent components, is increasingly being recognised as in tune with the changing political and ecological nature of rangelands. He describes ways in which the literature reflects this changing attitude, outlines how rangelands respond to changes in climate and explores the evolving use of livestock resources. In addition, h...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1393

در این مطالعه، مدل های ترمودینامیکی مایع-مایع بررسی شده اند. پیش بینی داده های تعادلی با سه مدل nrtl، uniquac و modified-uniquac برای سه سیستم (آب، متانول، mtbe)، (آب، متانول، tame) و (آب، متانول،1-اکتانول) در دمای c?25 انجام گرفته است.کد نویسی این سه مدل در محیط متلب انجام شده است؛ همچنین با استفاده از این نرم افزار پارامترهای سه تایی برای مدل modified-uniquac محاسبه گردیده است. هدف از این کار...

Journal: :Journal of Range Management 1982

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