An applied statistical method to identify desertification indicators in northeastern Iran

Sarparast, Mehdi; Ownegh, Majid; Najafinejad, Ali; Sepehr, Adel

doi:10.1186/s40677-018-0095-3

Cited by 9 publications

(5 citation statements)

References 17 publications

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“…Global warming associated with the extension of grazed and cropped areas should put more regions at high risk of gully erosion (Valentin et al, 2005), which is an important indicator of desertification (Avni, 2005;Zweig et al, 2018). In discussions on the theme of desertification, soil erosion always appears as one of the most critical indicators (Symeonakis et al, 2014;Sarparast et al, 2018). Indeed, it is considered the most severe problem of land degradation and one of the main conditions of desertification in the Brazilian semiarid (Sampaio et al, 2005;Sá et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…These aspects yield significant changes in ecosystems, impacting in the biodiversity and socio-economic activities. Several studies performed in different parts around the world, like Italy (Salvati et al, 2016), Greece (Karamesouti et al, 2018), China (Huang and Siegert, 2006), Irã (Sarparast et al, 2018), Mexico (Becerril-Piña et al, 2015), Africa (Capozzi et al, 2018), and Brazilian Northeast (Vieira et al, 2015), show that the desertification process can be caused by anthropogenic exploitation on the natural resources.…”

Section: Introductionmentioning

confidence: 99%

“…Although several studies discuss the desertification associated with the erosive phenomenon (Avni, 2005;Salvati et al, 2015;Dai et al, 2017;Sarparast et al, 2018;Zweig et al, 2018), desertification processes occurring in the Brazilian Northeast are poorly studied. Therefore, the mapping of LEFs and the estimation of soil loss are crucial to be used as an indicator of desertification processes.…”

Section: Introductionmentioning

confidence: 99%

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Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil

Rios

Silva

Carvalho-Santos

2020

Revista Brasileira De Ciência Do Solo

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Discussions on desertification frequently highlight soil erosion as a striking feature of this phenomenon. In particular, the high spatial density of gullies represents a strong indication of the formation of desertification hotspots. In this study, through field activities and Monte Carlo simulations, we estimated the volume of soil loss by linear erosion on the slopes of the middle course of the Salitre river in the North of Bahia State. This estimative contributes to the recognition of a desertification process in the studied local. The lengths of the gullies and rills, visible through high-spatial-resolution satellite images, were vectorized. The width and depth of the Linear Erosion Features (LEFs) were measured through field study and recorded via geoprocessing. Statistical treatment was applied to the data to indicate the probability of occurrence of the width and depth classes. Subsequently, the Monte Carlo simulation was used to indicate the volume of soil removed from the slopes by the linear erosion process. Several ramified systems of LEFs are identified and mapped. Monte Carlo simulation fits the measured data well. Estimates indicate that linear erosion event eroded approximately 450,000 m³ of soil in an area of 2,000 hectares, which indicates extreme land degradation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil

Rios

Silva

Carvalho-Santos

2020

Revista Brasileira De Ciência Do Solo

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“…Land use change is an important cause of disturbance in the natural environment as it increases the severity of natural disasters such as floods, dust storms, etc. It also causes significant unnatural events such as water, soil, and air pollution, land subsidence, and eventually, desertification [1]. Land cover changes occur naturally over time but are hastened by human activity.…”

Section: Introductionmentioning

confidence: 99%

Linking Land Use Changes to Policy Decisions: The Case of Northeastern Iran

Sarparast¹,

Niknejad²

2023

Sustainable Development

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Land use change is the most important cause of disturbances in the natural environment. It increases the severity of natural disasters such as floods, dust storms, etc. Moreover, it also leads to major unnatural events such as water, soil, and air pollution and land subsidence. Land use change can take many forms in different parts of the world. The vast majority of these changes are the result of erroneous and unscientific policies that may be beneficial in the short term, but have negative long-term impact on human societies and the environment. Wrong policies lead to erroneous and short-term development and, in the long run, irreversible socioeconomic and environmental challenges. In this chapter, the process of land use change, driving forces (political decisions, technological development, etc.), causes, and effects of changes were all considered in a socio-ecological system in northeastern Iran (As a representative of the hyper-arid, arid, and semiarid regions of Iran). The discussion is captured in a framework reflecting driving forces, pressures, state of affairs, responses, and impacts (DPSIR framework).

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“…In the current century, land degradation (LD) is recognized as one of the most critical challenges for humanity (Khanamani, Karim Zadeh, Jafari, & Golshahi, 2013; Sarparast, Ownegh, Najafinejad, & Sepehr, 2018). LD has been defined as … any decrease in the land potential through one or combination of several processes, including water erosion, wind, and vegetation degradation, which are affected by potential human and natural factors (Prăvălie, Savulescu, Patrich, Dumitrascu, & Bandoc, 2017; UNEP, 1994).…”

Section: Introductionmentioning

confidence: 99%

Land degradation assessment in the dust hotspot of Southeastern Ahvaz, Iran

Poornazari¹,

Khalilimoghadam²,

Hazbavi

et al. 2020

Land Degrad Dev

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The present study was conducted to assess the land degradation (LD) in the largest source area for dust storms in Southeastern Ahvaz (SEA) using a Modified Mediterranean Desertification and Land‐use (MMEDALUS) method (a modification of the MEDALUS method). The LD of the dust hotspot of SEA was evaluated using the soil quality index (SQI), climate quality index (CQI), vegetation quality index (VQI), and management quality index (MQI). The study indicators and final land degradation index (LDI) index were classified into four groups of low (100–120), moderate (121–135), severe (136–153), and very severe (more than 153). The results showed that the SQI, CQI, VQI, and land management quality index (MQI), respectively were 151 ± 6, 167 ± 5, 175 ± 12, and 168 ± 18 for the whole dust hotspot of SEA. The results revealed that the SQI and VQI had the minimum and maximum effect on LD assessment, respectively. The integration of study indices and indicators and their effectiveness for LD assessment showed that the study dust hotspot was rated at a mean of 165 ± 7 in the very severe degraded class based on our MMEDALUS assessment. Whereas, only about 18% of the study area scored in the severe class, and other parts are classified in the very severe class. Based on the field surveys of the dust hotspot and the results of the MMEDALUS method, suitable strategies for revitalizing the dust hotspot of SEA, were proposed using homogeneous land‐components such as the construction of windbreaks using indigenous species of the area, forestry, planting, water spreading, wetting, protection, and grazing management.

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An applied statistical method to identify desertification indicators in northeastern Iran

Cited by 9 publications

References 17 publications

Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil

Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil

Linking Land Use Changes to Policy Decisions: The Case of Northeastern Iran

Land degradation assessment in the dust hotspot of Southeastern Ahvaz, Iran

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