نتایج جستجو برای: native rangeland

تعداد نتایج: 104634  

2014
Chengjie Wang Guodong Han Shiping Wang Xiajie Zhai Joel Brown Kris M. Havstad Xiuzhi Ma Andreas Wilkes Mengli Zhao Shiming Tang Pei Zhou Yuanyuan Jiang Tingting Lu Zhongwu Wang Zhiguo Li

Considering their contribution to global warming, the sources and sinks of methane (CH4) should be accounted when undertaking a greenhouse gas inventory for grazed rangeland ecosystems. The aim of this study was to evaluate the mitigation potential of current ecological management programs implemented in the main rangeland regions of China. The influences of rangeland improvement, utilization a...

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...

Journal: :journal of rangeland science 0
mehdi moameri assistant professor, university of mohaghegh ardabili, ardabil, iran mohammad jafari university of tehran ali tavili university of tehran babak motasharezadeh university of tehran mohammad ali zare chahuoki university of tehran

there are many remediating methods for the polluted soils but only phytoremediation is a cost effective, environmental friendly, aesthetically pleasing approach that is most suitable for many countries. the purpose of this study was to investigate the potential of native plants for phytoremediation of contaminated soils with lead, zinc, cadmium and nickel in the rangelands around national lead ...

قهساره اردستان, الهام, ترکش, مصطفی , مهدی, بصیری, وهابی, محمدرضا ,

With regard to retrogression trend of rangelands in central Zagross, many native plant species are expected to be increasingly on the verge of extinction. Therefore, for proper rangeland management the optimum harvest intensity of important plant species is an essential factor for rehabilitation and recovery of native rangeland species. This research was aimed to study the response of four rang...

2011
SAMUEL D. FUHLENDORF DAVID M. ENGLE

Rangelands are the most common form of terrain WE PROPOSE A PARADIGM THAT in both the United States (where it accounts for 61% of all land surface) and the world (70% of all land surface). ENHANCES HETEROGENEITY Rangelands consist primarily of native plant communities managed, typically, for livestock production (Holechek et al. INSTEAD OF HOMOGENEITY TO PROMOTE 1998). Because they can embrace ...

Journal: :Rangeland Ecology & Management 2021

Rangeland vegetation in the Great Basin, United States, is frequently disturbed by natural- and human-caused wildfires that facilitate establishment dominance of introduced annual weeds such as cheatgrass (Bromus tectorum) medusahead wildrye (Taeniatherum caput-medusae [L.] Nevski). Ecological resilience resistance native seeded-non-native plant communities this region, however, appear to follo...

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...

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