نتایج جستجو برای: natural rangelands
تعداد نتایج: 483631 فیلتر نتایج به سال:
Mountainous landscapes in Central Zagros are mainly used as grazing rangelands to feed animals and are heavily degraded. Overgrazing may impose a negative effect on rangeland productivity and sustainability through significant changes in soil properties. Soil nitrogen (N) mineralization is one of the key biological processes that might be affected by biotic and abiotic factors including range g...
One of non-forage functions of rangelands vegetation is soil conservation and prevents it from erosion. Water soil erosion has economic, social and environmental implication due to both on-site and off-site effects. So, the objective of this study was to assess the on-site effect of water erosion on conservation function of summer rangelands vegetation, using a combination between economic valu...
Aesthetic is an added value to other precious values of rangelands and helps its ecosystem conservation. Unfortunately, there is not plenty of researches run on this issue and its probable value. Instead emphasis has put on ecosystem management especially on the basis of marketable products. In this study, the people willingness to pay for the aesthetic of Sarbijan rangeland landscapes and its ...
Climate finance investments and international policy are driving new community-based projects incorporating payments for ecosystem services (PES) to simultaneously store carbon and generate livelihood benefits. Most community-based PES (CB-PES) research focuses on forest areas. Rangelands, which store globally significant quantities of carbon and support many of the world's poor, have seen litt...
The rangelands of the Mongolian Plateau are dynamic social-ecological systems that are influenced by a complex network of drivers, including climate, social institutions, market forces and broad scale policies affecting land tenure. These factors are linked via feedbacks and often exhibit non-linear relationships. The sustainability and resilience of rangelands in this region are dependent on t...
Severe natural resources utilizations, disregarding their real value and environmental potency, pose many hazards in developing countries. Many rangelands have been converted to agricultural fileds to achieve more immediate income. This study, aimed to investigate the economic impacts of converting good and poor rangelands to dry farmlands in terms of soil and water conservation services in Fer...
Climate change is one of the most important challenges in sustainable development which has negative effect on terrestrial and aquatic ecosystem. The lead factor of this phenomenon is Co2 accumulation in atmosphere. One of the suitable ways of facing the mentioned issue is carbon sequestration in plant biomass and soil as a simple as well as inexpensive refined way in rangelands. With respect t...
Understanding landscape conversion is vital for assessing the impacts of ecological and anthropogenic disturbances at regional and global scales. Since rangelands cover nearly half of the global land surface, and because a large part of rangelands is located in semi-arid ecosystems, they serve as critical land cover types for determining regional biodiversity, global biogeochemical cycles, and ...
Dr. Mohammad Hossein Jazirei was born in 1922 in Bandar-e-Anzali and finished high school there.In May 1944, he graduated in agriculture engineering and occupied the position of Lahijan forester in Forestry Department of Ministry of Agriculture in fall. In 1955, he moved to Belgium and was admitted by Agronomy Institute of Belgium; he achieved MS in Water and Forest field in 1957. After doing r...
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