نتایج جستجو برای: rangeland plants

تعداد نتایج: 200479  

2012
Jason W. Karl Jeffrey E. Herrick Dawn M. Browning

Adapting what we currently know about ecosystems to a future where rangelands are changing is a new frontier in rangeland management. Current tools for knowledge discovery and application are limited because they cannot adequately judge ecological relevance of knowledge to specific situations. We propose development of integrated knowledge systems (KSs)— collections of resources (e.g., data, an...

2016
Teshome Abate Ayana Angassa

INTRODUCTION Analyzing trends of land use systems and the changes occurred overtime is an effective way of assessing the impacts of land use/land cover (LULC) changes on ecosystem function. It provides important insights for understanding the spatial patterns of land use processes. The rangelands of southern Ethiopia are adversely affected by increased human population pressure, encroachment of...

2005

Humans have exerted large-scale changes on the terrestrial biosphere, primarily through agriculture; however, the impacts of such changes on the hydrologic cycle are poorly understood. The purpose of this study was to test the hypothesis that the conversion of natural rangeland ecosystems to agricultural ecosystems impacts the subsurface portion of the hydrologic cycle by changing groundwater r...

Journal: :Ecological applications : a publication of the Ecological Society of America 2016
Carissa L Wonkka Dirac Twidwell Jason B West William E Rogers

In ecosystems with alternative stable states, restoration success can be thought of as overcoming the resilience of an undesirable state to promote an alternative state that yields greater ecosystem services. Since greater resilience of undesirable states translates into reduced restoration potential, quantifying differences in resilience can enhance restoration planning. In the context of shru...

Journal: :اکو هیدرولوژی 0
نسرین کلاهچی مربی گروه محیط زیست، دانشکدة علوم پایه، دانشگاه آزاد اسلامی واحد همدان محسن محسنی ساروی استاد گروه احیا و اصلاح مناطق خشک و کوهستانی، دانشکدة منابع طبیعی، دانشگاه تهران علی طویلی دانشیار گروه احیا و اصلاح مناطق خشک و کوهستانی، دانشکدة منابع طبیعی، دانشگاه تهران قاسم اسدیان مربی پژوهشی گروه مرتعداری مرکز تحقیقات کشاورزی و منابع طبیعی استان همدان

one of the main components affecting the ecohydrology is interception or loss of rainfall by plant canopy. interception of reduced effective precipitation and dry areas to prevent soil moisture. low level of abstraction is considered as important factors in managing rangeland resources. in this study, the vegetative form, some broad-leaved plants and plant selection and method of abstraction in...

2013
Fazel Amiri Abdul Rashid B. Mohamed Shariff Saleh Arekhi

The Irano-Touranian biogeography region is exposed to degradation because of anthropogenic activities and overgrazing. One of the important indirect applications of this ecosystem is Apiculture, which can be considered for reduce degradation of land and over coming for indigenous people, that were live in this area. It is possible to increase Apicultural ability in an appropriate area by identi...

2002
W. R OCUMPAUGH J. W. STUTH W. R. Ocumpaugh

Fecal seeding by livestock may be an effective, low-cost means of rangeland restoration. We compared recruitment of switchgrass (Panicum virgatum L.) from seed fed to cattle and deposited in dung to that of broadcast-seeded plots receiving a comparable number of unfed seed. Although germinability of seed passed through livestock (52 to 62%) was reduced relative to that of broadcast seed (85 to ...

Bahareh Behmanesh Mohammad Reza Shahraki Mohsen Sharafatmandrad, Naghmeh Gholami Baghi

Rangelands are the main sources of forage for livestock feeding by localpeople. Beside forage production, rangeland ecosystems provide many other goods andservices such as medicinal plants, recreation, soil and water conservation, wildlife habitat,fishing, hunting, hiking, etc. Nevertheless, there are no much information about the waythat local communities think about the rangelands goods and s...

2001
W. Tao

Land desertification is one of the most serious environmental and social-economic problems in the North China. The processes of desertification mainly have being controlled by the interaction of human activities and fragile eco-environment, that means the pattern and intension of landuse are major factors for development or reverse of desertification. Because of the increasing pressure of popul...

Journal: :Turkish journal of range and forage science 2021

Rangeland plant communities respond to environmental changes depending on management practices, climate, topography, and time. The objective of the study was determine in abundancy functional groups, range condition score, class, health with different topographical characteristics between 1993 2013. Trends investigated changed aspect topography. While decreaser increaser plants decreased, invad...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید