نتایج جستجو برای: desertification is land degradation in arid

تعداد نتایج: 17525015  

Akbari, Mehri, Fakhrabadi, Amir, Nasserzadeh, Mohammed Hossai, Salighe, Mohamad ,

Aims & Backgrounds: Desertification is one of the major challenges in today's world, especially in countries like Iran that are affected by arid and semi-arid climates. To prevent and slow down the desertification process and in other words, with the aim of preventing and reducing desertification speed, the first effective and necessary step is to identify the susceptible areas and the factors ...

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 a. mavrakis institute of urban environment and human resources, department of economic and regional development, panteion university, 136 syngrou avenue, gr-17671, athens, greece

the present study illustrates the long-term changes in selected socioeconomic variables (population,industrial activities, settlement dispersion, and land-use) together with climate aridity trends in thriasio, the larger industrial area of greece located twenty kilometers far from athens. this region, originally devoted to agriculture, experienced fast industrial and economic development during...

2006
J. XIAO Y. SHEN

The grain size composition of topsoil characterizes the soil texture and other physical properties. The coarsening of topsoil grain size is a visible symbol of land degradation; thereby the change in topsoil grain size can be potentially used to monitor desertification using remote sensing. This study proposes a new index for detecting topsoil grain size composition through ground in situ soil ...

2015
Jianmin Chu Hongxiao Yang Qi Lu Xiaoyan Zhang

Some endemic shrubs in arid and semiarid ecosystems are in danger of extinction, and yet they can play useful roles in maintaining or restoring these ecosystems, thus practical efforts are needed to conserve them. The shrubs Amygdalus pedunculata Pall., Amygdalus mongolica (Maxim.) Ricker and Ammopiptanthus mongolicus (Maxim. ex Kom.) Cheng f. are endemic species in arid and semiarid regions of...

Journal: Desert 2012
Gh.R. Zehtabian H. Ahmadi M. Tahmoures M.H. Sadeghi Ravesh

Due to increasing importance of desertification challenges and its consequences the necessity of sustainabledevelopment achievement in arid and semi-arid regions is essential in order to avoid limited sources asting, increase the efficiency of controlling, reclamation and restoration projects of natural areas. Based on the iterature review, it has been recognized that combating desertification ...

2016
Itzhak Katra Avner Gross Nitzan Swet Smadar Tanner Helena Krasnov Alon Angert

Phosphorus (P) is an essential element in terrestrial ecosystems. Knowledge on the role of dust in the biogeochemical cycling of phosphorus is very limited with no quantitative information on aeolian (by wind) P fluxes from soils. The aim of this study is to focus on P cycling via dust emissions under common land-use practices in an arid environment by integration of sample analyses and aeolian...

Journal: :Remote Sensing 2022

Inner Mongolia is located in China’s arid and semi-arid regions, with sensitive fragile ecosystems at risk of increased desertification, necessitating ecological restoration. However, economic resources for large-scale restoration are often scarce, so it vital to identify key areas Previous desertification research has focused mainly on the condition changes soil or vegetation. not all vegetati...

Journal: Desert 2007
A. Salehpour jam D. Jahani M. Karimpour Reihan, M. Kianian

To investigate pedological criterion on land degradation in Quaternary rock units, at first, a part of the shoor watershed area was selected. After distinguishing target area, slope classes, land use and geology maps were created, then map of units were founded by overlaying and crossing these maps. In this research three indices of erodibility, salinity and permeability of soils were considere...

Journal: :international journal of environmental research 2014
l. salvati a. mavrakis

the present study illustrates the long-term changes in selected socioeconomic variables (population,industrial activities, settlement dispersion, and land-use) together with climate aridity trends in thriasio, the larger industrial area of greece located twenty kilometers far from athens. this region, originally devoted to agriculture, experienced fast industrial and economic development during...

Journal: :مرتع و آبخیزداری 0
غلامرضا زهتابیان استاد دانشکده منابع طبیعی، دانشگاه تهران حسن خسروی استادیار دانشکده منابع طبیعی، دانشگاه تهران علی آذره دانشجوی دکتری بیابان زدایی، دانشکده منابع طبیعی، دانشگاه تهران

need to increasing agricultural land in order to improve food resources in the past two centuries recentlead to widespread changes in land use and improper management of these lands. continue thisprocess can lead to land degradation and desertification, and improve such soils is very costly;therefore, prevention of land degradation is more desirable. this function requires to research on theuti...

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