نتایج جستجو برای: arid rangelands

تعداد نتایج: 20677  

2008
Ginger B. Paige Timothy O. Keefer

Automated electronic soil moisture sensors, such as time domain reflectometry (TDR) and capacitance probes are being used extensively to monitor and measure soil moisture in a variety of scientific and land management applications. These sensors are often used for a wide range of soil moisture applications such as drought forage prediction or validation of large-scale remote sensing instruments...

Assessment and monitoring of rangeland in different grazing managements seems necessary to manage rangelands. The plant functional groups can be used as appropriate responders for rangelands condition and management. Therefore, this study was performed and aimed to determine the most important traits that are influenced by rangeland variation and management. In order to this, three areas along ...

Ali Hosein Bahramian Ezatollah Moradi Gholam Ali Heshmati,

Rangeland health assessment provides qualitative information on ecosystemattributes. We examined changes in rangeland health in the Zagros semi-arid rangelands ofIran at fixed sites between 2001 and 2011, over the 10-year period. The rangelandfragments significantly declines in the quality of the vegetation, and changes in plantspecies were driven largely by seasonality, and to a lesser extent,...

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: :African Journal of Range & Forage Science 2021

(2021). Montane rangelands in a changing world. African Journal of Range & Forage Science: Vol. 38, Rangelands Changing World, pp. iii-vi.

Journal: :مرتع و آبخیزداری 0
زهرا نیکبخت دانشجوی کارشناسی ارشد مرتع داری، گروه مرتع و آبخیزداری، دانشگاه فردوسی مشهد، ایران محمد فرزام دانشیار؛ گروه مرتع و آبخیزداری، دانشگاه فردوسی مشهد، ایران. محمد خواجه حسینی دانشیار، گروه زراعت، دانشگاه فردوسی مشهد، ایران حمید اجتهادی استاد، گروه زیست شناسی، دانشگاه فردوسی مشهد، ایران

the study of soil seed bank provides useful information on management and restoration of natural ecosystems. in the arid environments, some perennial plants may cause accumulation of seed bank under their canopy, thereby protecting them against the livestock herbivory and the other environmental factors. this study was conducted with objective to investigate effect of perennial plants on densit...

2008
J. G. Han Y. J. Zhang C. J. Wang W. M. Bai Y. R. Wang G. D. Han L. H. Li

Rangelands of China have for centuries provided forage for livestock but now their role in water, soil, and biodiversity conservation is being recognised by Governments and people. However, much of the rangelands has recently degraded anddesertification is nowawidespread problem.The cause of the degradation is over-grazing andover-cultivation. Climate change is exacerbating theproblem.TheChines...

Journal: :ecopersia 2015
behnaz attaeian behnoush farokhzadeh davoud akhzari mohammad mehdi artimani mahshid souri

soil alkalinity and salinity are serious problems in arid and semi-arid regions, and therefore monitoring of soil ph and electrical conductivity (ec) is necessary in any region. the present study aimed to properly interpolate soil ph and ec as soil quality indices in a semi-arid mountainous area with annual precipitation of 342.4 mm. the study area is the karimabad rangelands in hamadan provinc...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید