نتایج جستجو برای: land degradation

تعداد نتایج: 264605  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Christopher T Fisher Helen P Pollard Isabel Israde-Alcántara Victor H Garduño-Monroy Subir K Banerjee

This paper presents 2,000 years of settlement and land use within the Lake Pátzcuaro Basin, Mexico. Three findings challenge the conclusions of previous research. We show (i) that initial land degradation was caused by settlement, not by agriculture; (ii) that population density inversely correlates with erosion; and (iii) that land degradation was associated with European Conquest but not from...

Journal: :Journal of environmental management 2015
M S Reed L C Stringer A J Dougill J S Perkins J R Atlhopheng K Mulale N Favretto

This paper identifies new ways of moving from land degradation towards sustainable land management through the development of economic mechanisms. It identifies new mechanisms to tackle land degradation based on retaining critical levels of natural capital whilst basing livelihoods on a wider range of ecosystem services. This is achieved through a case study analysis of the Kalahari rangelands ...

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...

Journal: :SSRN Electronic Journal 2013

2018
Bernice M Sainepo Charles K Gachene Anne Karuma

BACKGROUND The changes in land use and land cover have a strong effect on the total soil organic carbon, its fractions and its overall soil health. This study carried out in Olesharo Catchment, Kenya, was to quantify the differences in total organic carbon (TOC), particulate organic carbon (POC), mineral organic carbon (MOC) and carbon management index (CMI) among four land use types: grassland...

Journal: :desert 2013
t. mesbahzadeh h. ahmadi gh.r. zehtabian f. sarmadian

land degradation, or desertification, is specific to arid, semi-arid, and dry sub-humid regions. the rate of thisphenomenon is high in developing countries such as iran. this research investigated desertification and mapping ofdesertification in abuzaydabad, near kashan, iran, with an emphasis on land criteria using an imdpa model.different studies have assessed land degradation or desertificat...

ژورنال: علوم آب و خاک 2013

Study of land use effects on soil quality indicators leads to sustainable management and preventing progressive land degradation. The TM (1987) and ETM+ (2000 and 2005) data were used to study land use change effects in Mahan-Joopar area on soil quality indicators. Fifty random soil samples from 0-30 cm depth of each land use were taken using provided maps. Organic matter, microbial respiration...

2016
V. Imbrenda T. Simoniello

Land degradation is one of the most impacting phenomena on natural resource availability, both in quantitative and qualitative terms. In order to provide efficient tools for territorial sustainable management in areas affected by land degradation, it is important to define suitable models and indicators able to identify exposed areas and their vulnerability level, so as to provide an effective ...

Journal: :desert 2005
gh. r. zehtabian h. ahmadi h. khosravi a. rafiei emam

desertification process as a great problem affects most of the countries in the world specially developing countries. this process has a high rate in arid and semi-arid countries such as iran. the main objective of this research was to investigate land degradation status and desertification mapping of kashan area. different studies have been carried out in the world in order to assess desertifi...

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