نتایج جستجو برای: while current desertification condition includes low ii

تعداد نتایج: 3510137  

Introduction: Desertification refers to the decreased biological potentials in the ecosystem of hyper-arid, arid, semi-arid, and humid semi-arid regions because of climate change and human activities. The phenomenon occurs due to a combination of direct and indirect factors whose intensity varies according to time and place, making the scientific, replicable, and systematic evaluation of desert...

2015
Qi Feng Hua Ma Xuemei Jiang Xin Wang Shixiong Cao

Desertification is the result of complex interactions among various factors, including climate change and human activities. However, previous research generally focused on either meteorological factors associated with climate change or human factors associated with human activities, and lacked quantitative assessments of their interaction combined with long-term monitoring. Thus, the roles of c...

Journal: :desert 2008
a.a. mehrabi gh. zehtabian n. rostami a. malekian

undoubtly, land degradation causes apparent decrease of natural resources potential which are highly linked to desertification. different countries and also international organization have realized a great number of projects to combat desertification. unfortunately these projects have not reach to their goals. the experiences shows that the reason of these unsuccessful works is lack of consider...

Journal: :international journal of environmental research 0
l. salvati consiglio per la ricerca e la sperimentazione in agricoltura, centre for the study of soil-plant interactions (cra-rps), via della navicella 2-4, i-00184 rome, italy i. tombolini consiglio per la ricerca e la sperimentazione in agricoltura, centre for the study of soil-plant interactions (cra-rps), via della navicella 2-4, i-00184 rome, italy

land vulnerable to desertification increased in the mediterranean basin since world war ii dueto several interacting factors including climate variations, land-use changes and growing human pressure. itwas hypothesized that the increase in the level of land vulnerability is not distributed homogeneously overtime and space while impacting preferentially landscapes surrounding large urban agglome...

Journal: Desert 2008
A. Malekian A.A. Mehrabi GH. Zehtabian N. Rostami

Undoubtly, land degradation causes apparent decrease of natural resources potential which are highly linked to desertification. Different countries and also international organization have realized a great number of projects to combat desertification. Unfortunately these projects have not reach to their goals. The experiences shows that the reason of these unsuccessful works is lack of consider...

Land degradation in arid and semi-arid regions caused by climate change and human activities makes it more susceptible to desertification. The aim of this research is assessing the intensity of desertification in Roudab plain of Sabzevar city using IMDPA model. So two criteria of climate and water as the main criteria affecting desertification process were considered based on field observations...

Reza Gharaee, Reza Saeidi, Zohreh Nobakht

Neonatal purpura fulminans is a rare and life threatening disease that can be inherited or acquired in etiology. It manifests as DIC and extensive subcutaneous thrombosis. The condition is often fatal unless there is prompt diagnosis, and judicious therapy. The most important causes of this condition are infections and congenital deficiency of anticoagulant proteins C and S.In the case of PC (p...

2013
Eman K. Albalawi Lalit Kumar

Desertification is a serious global environmental problem that affects many people directly in countries with semi-arid or arid climates. The causes of desertification are diverse and complicated, ranging from international economic activities to unsustainable land use practices of local communities. The consequence of desertification reduces the ability of the land to support life and decrease...

Today, degradation of soil and water resources are the most important factors of desertification in arid and semi-arid areas as a result of mismanagement and improper human behavior. Enforcement measures in relation to desertification control have to be based on knowledge of the current state of desertification risk and its severity. In the present study, to evaluate the risk and severity of de...

Early warning systems are key components of strategies to reduce risk. This research, by adopting a systematic approach in the management of the risk of desertification and by including previously developed models and systems, offers an integrated efficient structure in terms of early warning for the risk of desertification as a pilot system for semi-arid areas of west Golestan Province in IRAN...

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