Seyed Hamidreza Sadeghi

Tarbiat Modares University | TMU · Department of Watershed Management

The characteristics of raindrops are among the major factors influencing rainfall erosivity. However, the effect of wind blowing on the determining factors of raindrops was not adequately reported. This study aims to measure the characteristics of raindrops under concurrent simulation of rainfall and wind using image processing at different wind ve...

Assessment of the watershed health and associated ecological security is crucial for the proper land resources management, notably when sufficient money and time have lacked. The present study aimed to prepare health and ecological security for the Pishkuh Watershed in Yazd Province, central Iran. To prepare the health atlas of the Pishkuh Watershe...

Introduction Choosing an optimal decision-making method for the watershed management is a problem that has always attracted the attention of researchers, and various methods have been used to achieve this goal. The multidimensionality of the watershed system, its integration with socioeconomic systems and the involvement of stakeholder's opinions a...

Aside from the many services that soil provides, it also stores water and makes it available to crops, which is critical for food security. However, the necessity of further studies for overcoming the existing gap in relation to the role of soil in the water, energy, and food nexus system has been preoccupying the experts and specialists around the...

Suspended sediment (SS) is an essential indicator for assessing watershed health. However, the temporal variation of SS, called sediment graph (SG) using readily available data, is not always considered, particularly in un-gauged watersheds, which are many in developing countries. Since field measurements of SS are time-consuming and costly, the sy...

Examining the problems and prioritization of various parts of the watershed is one of the essential factors for presenting programs and action plans for the adaptive management of the watershed. In other words, presenting executive measures should be based on specific problem-dependent variables, determinant criteria, and effective indicators in th...

The present study was conducted with the aim of feasibility study of inoculation of soil cyanobacteria in improving soil crack patterns and controlling surface runoff under freeze-thaw conditions in erosion sensitive area of Badranlou in North Khorasan Province, Northeastern Iran. This study identified the dominant and safe cyanobacteria available...

One of the important tools for watershed management and optimal decision making is the prioritization of sub-watersheds which can be effective in soil and water conservation and flood management. Hence, the purpose of this study is to investigate different methods of prioritization of sub-watersheds based on flood generation potential using physica...

The relationship between soil organic carbon (SOC) and environmental parameters was investigated in the Galazchai Watershed, Iran. Therefore, correlating the SOC amounts with remote sensing (RS) indices, topographic variables, and soil texture was analyzed. Some 125 soil samples gather from the upper 30 cm, and the weight of each sample was about 0...

The Islamic Republic of Iran is in the southwest of Asia and Middle East with an area of 1,873,959 km2 (Nami 2013; Sadeghi and Hazbavi 2015; Fig. 20.1) and total population of 80,277,428 (databank.worldbank.org/). Iran includes 31 provinces with annual temperature ranging from −20 to +40℃ (Amiraslani and Dragovich 2011). It lies between 25° and 40°...

Exploring spatial and temporal land-use changes is valuable for local governments to address issues of sustainability and planning policy where urbanization and industrialization are taking place. Besides anthropogenic effects, natural driving forces like climate change may also affect sustainability. However, such relationships have not been studi...

Rill erosion is one of the most important causes of land degradation, and it is caused by the flow concentration on the surface of the hillslopes. It, therefore, results in several times increase in the amount of soil loss and sediment yield. However, the biological control of the rill erosion using soil microorganisms has not been adequately endea...

Land degradation is the major issue which affect watershed sustainability and following social, economic and environmental of livelihood people. So, early detection of land degradation is necessary for policy-makers to make appropriate decision. In this way, remote sensing method is a candidate choice for assessments and monitoring. In this study,...

The present study was conducted to comprehensively evaluate watershed sustainability with the help of an initiative barometer developed based on different dimensions of social, economic, environmental, and policy. The newly developed barometer was then applied to assess the temporal variation of sustainability for the Shazand Watershed, Iran, for f...

Kinetic energy and corresponding erosive force of rainfall are strongly influenced by raindrop. The present paper aims to explore the raindrop size variation during rainfall events with different intensities in northern Iran by applying the processes of camera-taken photographs. Five rainfall intensities of 1 to 10 mm h–1 that occur frequently in t...

Soil erosion is one of the most common types of land degradation. To provide useful information for proper management, quantitative soil erosion evaluation and identification of effective factors are needed. However, rare studies have been reported on spatial modeling of soil erosion in connection with affective factors to prioritize the locality a...

Iran, like most of the developing countries in the world, faces many issues with limiting water, energy, and food resources. On the other hand, the state of the watersheds is being destroyed due to the imbalance between human and the environment leading to different environmental, social, economic, and political consequences. This requires a change...

Soil erosion control by amendments is an effective method to reduce runoff and soil loss. In this respect, application of nanofiber (NF) produced from recycled old paperboard containers as a novel approach has not been reported yet. Therefore, application of the produced lignocellulose NF suspension was carried out at various typical dosage levels...

Runoff components are the most important factors in explaining the hydrological behaviour of a system. So that the proper understanding of the runoff processes may effectively help managers and decision-makers adopt appropriate measures. In this regard, there are variety of approaches to handle runoff generation, but the application of environmenta...

The identification of the degree of linkage between sediment source and sink areas and also the channel network allows for prioritizing areas for sediment control measures at the watershed scale. The present study was therefore planned to investigate sediment connectivity based on structural and functional aspects. To that end, the index of connect...

Assessing the impact of changes in rainfall and land use on flood is a key issue in watershed management. However, their simultaneous effect has received less attention. The aim of this study was to investigate the impressibility of flood from rainfall regime and land uses in Cheshmeh Kileh Tonekabon watershed. For the present study, data from five...

Soil conservation dams are constructed across waterways or gullies to reduce the intensity of water flow, sediment retention and monitoring, reduce the peak discharge of floods, increase concentration and lag time in a watershed area, and finally correct channels width and length of channel. Gabion dams are porous structures, they are mostly used i...

Evaluation of sensitivity of hydrograph components and landscape metrics extracted from various spatial resolutions reveals relationships between landscape metrics and outflow properties with the lowest error. In the present study, 14 Digital Elevation Models (DEMs) with different resolutions derived from a vector and raster-radar source were analy...

Appropriate investigation of soil erosion triggering/controlling factors is of great importance for natural resources management. Usually, soil erosion assessment is time consuming and impose high costs to researchers and managers. Therefore, design of experiments methods can be good approaches to achieve the purpose to which adequate attention has...

Water and wind erosion is one of the most important causes of soil loss. Understanding these interactions is essential for estimating soil quality and environmental impacts in areas with both types of soil erosion. Numerous factors affect the occurrence and process of water erosion. In this regard, dynamic climatic factors such as rainfall and wind...

Background: Because control of runoff generation as well as soil loss is influenced by freezing-thawing, proper knowledge and insight into the freezing-thawing process in combination with other hydrological processes is essential for executives and planners. However, such dynamic phenomenon and corresponding consequences have not been studied adequ...

Land degradation is a major global concern that is exacerbated in the erosion-prone marl (calcium carbonate-rich mudstone) slopes. Several studies have therefore focused on finding ways to inhibit soil erosion among which, soil inoculation has been recently introduced as a new technique. However, the success of such treatment has not been adequatel...

Due to the high costs associated with the control of soil erosion, the precise selection of practical techniques towards this end is a prerequisite for sustainable land management. For the proper application of anti-erosion measures, a good knowledge of the behavior of soil erosion and hydrological properties is required. Research has indicated tha...

ارزیابی شرایط حاکم بر آبخیزها به عنوان بوم‌سازگان‌های پیچیده و پویا برای مدیریت صحیح،‌ کارآ، به‌صرفه و نهایتاً پایدار آنها، از ضروریات اساسی محسوب می‌شود. در این ارتباط بررسی شرایط حاکم بر بوم‌سازگان آبخیز در قالب میزان نزدیکی و یا دوری آن از یک مبنای مشخص تعادلی قابلیت بررسی دارد. از این‌رو مفهوم نسبی سلامت و پایداری شاید به‎‌عنوان یکی از بنیادی‌ت...

The freeze-thaw phenomenon is one of the factors, which has an important role in increasing the qualitative and quantitative loss of soil. However, the dynamics and mechanism of freeze-thaw processes remain unknown. Therefore, adoption of appropriate conservation measures in the highland and mountains region and reduction of the effects of a freeze...

In recent years the concept of connectivity has emerged in sediment management to describe transfer of sediment from different sections of landscapes at various spatial and temporal scales. The sediment connectivity concept has two distinct components: structural and functional. Structural and functional sediment connectivities have a hard and soft...

Land surveying and remote sensing are crucial for understanding the spatial and temporal variations of basic physical properties in accordance with different land uses. Guiding land managers, decision makers, and planners on the implementing mitigation strategies of adverse Land Surface Temperature (LST) impacts is accordingly important. However, s...

Assessment of land use capabilities based on regional conditions is essential to reduce human impacts on natural resources and to identify suitable land uses. However, the selection of appropriate method for evaluating the potential of the land at the watershed scale has received less attention. Therefore, the present study aimed to apply and valid...

Controlling runoff generation and soil loss from hillslopes is a priority for land management. The capability of cyanobacteria as inoculants has recently been utilized in land management, and as a result various lab-scale studies have been conducted. The present study conducted a field-pilot experiment in Miandoab City, south of West Azerbaijan Pro...

This study investigated the role of three rangeland species viz. Agropyron trichophorum, Medicago sativa, and Lolium prenne on mitigating of effects of a freeze-thaw (FT) cycle on runoff generation and soil loss from small experimental plots. Small plots (0.5 × 0.5m) were prepared in three replicates for control (i.e., under a FT cycle only) and tr...

Nowadays soil erosion control using different amendments has grown up worldwide. However, the application of transformed materials like biochar has not been adequately studied. In the same vein, the application of biochars produced from waste materials that harm nature, and impose cost to managers and producers is a valuable approach for optimal ut...

The increasing demands of the population and the need for development obliged the optimal use and adaptive management of the watershed resources. Accordingly, it is necessary to adopt comprehensive measures to reach sustainable development goals. This objective can be achieved by the application of interdisciplinary and professional approaches thro...

The increasing demands of the population and the need for development obliged the optimal use and adaptive management of the watershed resources. Accordingly, it is necessary to adopt comprehensive measures to reach sustainable development goals. This objective can be achieved by the application of interdisciplinary and professional approaches thro...

Newly abandoned rain-fed lands, due to soil quality decline, are the main sources for soil erosion in semi-dry lands agricultural hill-slopes. However, adopting compatible environmentally friend measures have not been adequately implemented. Following various resultful laboratory studies, in this paper, we assessed the effect of field inoculation o...

در حال حاضر مدیریت صحیح، جامع و نظام‌مند کلیه منابع آبخیز بدون بهره‌گیری از تجربه‌های ارزش‌مند جامعه‌های مختلف تخصصی، کاربست سازگار آنان و نیز فن‌آوری‌های جدید و کاربردی امکان‌پذیر نمی‌باشد. این در حالی است که تعادل بین نیازهای جامعه‌های انسانی از اساسی‌ترین چالش‌های مدیریت آبخیز در سرتاسر جهان محسوب می‌شود. بر این اساس کاربرد هرگونه فن‌آوری و ر...

A pressure‐state‐response (PSR) framework was customized to outline the watershed health (WH) concept. Towards this, the watershed indicators of pressure (P), state (S) and response (R) were conceptualized according to 17 climatic, anthropogenic, and hydrologic criteria. Four node years of 1986, 1998, 2008 and 2014 were selected to provide a runnin...

Measuring soil erosion and sediment yield using different methods is necessary to achieve integrated and reliable information from amount of soil loss. In this regards, the application of new and up-to-date innovative methods is required and important to facilitate the measurements, which leads to increase the accuracy. However, there is no enough...

The Gavkhooni Watershed with an area of 3365.22 km2 in the Zayandeh Rood Basin and ending to the Gavkhooni Wetland faced many environmental problems such as drought, soil loss, and salinity. Spatial representativeness analyses would inform policy-makers and land managers where to establish baseline study sites for the integrated watershed managemen...

This study was conducted to characterize the hysteresis of suspended sediment concentration (SSC) at different timescales for the Educational and Research Forest Watershed of Tarbiat Modares University, Iran. Hysteresis loops were developed between flow discharge and SSC using data for (i) the whole period, (ii) seasonal, (iii) monthly and (iv) sto...

Accelerated soil erosion is one of the most important detrimental factors affecting the quality of the watershed health. Due to different environmental pressures and drivers, the effort is needed for ecological health and resilience assessment in regards to erosion changeability. However, this important subject has not been adequately studied yet....

Gully erosion is one of the most important forms of land degradation in many regions of the world. Understanding the process of gully erosion therefore is important for better management of the watersheds prone to gully erosion. However, many different aspects of gully erosion, like hydrological behavior, are still not fully understood. The present...

Runoff coefficient (RC) is one of the important parameters, which is often considered in surface runoff and peak flood discharge estimation methods in various projects of watershed management and flood control. However, the effect of variability of RC due to human-induced activities on hydrologic behavior of the watershed has not been adequately co...

The deterioration of river quality has already become a growing threat to the health of aquatic environments around the world. Hence, a sound temporal and spatial monitoring of water and sediment pollution in rivers is required for effective watershed management. The variability of water parameters (e.g., discharge, velocity, temperature, DO, pH, t...

Developing an understandable and comprehensive conceptual model for watershed health assessment is one of the main priorities of many various managerial and policy making projects in the world including the mega project on the integrated watershed management of Iran. Towards this, the present study as the pioneering research in the country has been...

Land degradation means a significant reduction in the productive capacity of the land and it is a complex process. Tackling land degradation challenges in the 21st century requires a new understanding of the complex interactions between land systems and human societies. Specifically, the sustainability of the land systems cannot be achieved without...

The purpose of the current research is to quantitatively study the water-energy-food nexus in the watershed scale to agricultural sector. Using this suggested approach, the interrelation between water and food was inscribed through water consumption, water mass productivity, and economic water productivity indicators. The interrelation connecting e...

The changes in runoff and sediment load due to various approaches in land use management have recently received considerable attention. In the present paper, the impact of land use change under collaborative management framework on water and sediment load was investigated by combined usage of hydrologic modelling and land use maps. Three groups of...

The effects of various vector scales (125000–1:250000) and cell sizes (5–200 m) on the modeling performance of hydrographs was evaluated using the time-area histograms (TAHs) based on Clark's Instantaneous Unit Hydrograph (IUH) model for the Galazchai watershed, Iran with an area of 103 km2. Some 960 direct runoff hydrographs (DRHs) were produced a...

The evaluation of scale effects on modeling performance of sedimentgraphs as the ultimate outputs of the hydrological simulation is vital for adaptive watershed management. The present study therefore analyzed effectability of simulated sedimentgraphs components in association with different topographic maps with various vector scales. The whole pr...

طبیعی است کاربست رویکردهای پیشنهادی و بعضا آزمون شده ابزارهای خوبی را برای مدیریت سازگاز حوزه های آبخیز کشور فراهم خواهم کرد. در همین راستا، نوشتار پیش رو تلاشی مقدماتی است برای ارائه مجموعه ای مدون و کاربردی است . دبیران این کتاب و یقینا نویسندگان اعتقاد دارند که با توجه به رشد روزافزون فن آوریهای کارآمد در ابعاد مختلف مدیریت کتاب مزبور یک ضرورت ب...

Increasing knowledge and evaluation the soil quality in the different ecosystems is important to improve sustainable land use management and to decrease land degradation. Therefore, the present study was planned to analyses the effects of different land use (irrigated farms, rain fed farms, orchards and rangelands), texture and topography on soil q...

Quantification of runoff and soil loss variabilitities are important aspects of hydrological processes. The present study was designed to evaluate the effect of six consecutive storms on variability of descriptive characteristics of runoff and soil loss under different rainfall intensities. To achieve the objectives, a set of laboratory experiments...

Quantification of runoff and soil loss variabilitities are important aspects of hydrological processes. The present study was designed to evaluate the effect of six consecutive storms on variability of descriptive characteristics of runoff and soil loss under different rainfall intensities. To achieve the objectives, a set of laboratory experiments...

Different land uses affect physical, chemical and biological properties of the soil and hence change the quality of soil. However, limited researches have been conducted in due course on the basis of high resolution field surveying. Therefore, the current study aimed to evaluate the effects of land use types on different variables of the Shazand Wa...

Assessment of watershed health and prioritization of sub-watersheds are needed to allocate natural resources and efficiently manage watersheds. Characterization of health and spatial prioritization of sub-watersheds in data scarce regions helps better comprehend real watershed conditions and design and implement management strategies. Previous stud...

در حال حاضر مدیریت صحیح، جامع و نظام‌مند کلیه منابع آبخیز بدون بهره‌گیری از تجربه‌های ارزش‌مند جامعه‌های مختلف تخصصی، کاربست سازگار آنان و نیز فن‌آوری‌های جدید و کاربردی امکان‌پذیر نمی‌باشد. این در حالی است که تعادل بین نیازهای جامعه‌های انسانی از اساسی‌ترین چالش‌های مدیریت آبخیز در سرتاسر جهان محسوب می‌شود. بر این اساس کاربرد هرگونه فن‌آوری و راهب...

Soil erosion is a serious environmental, social and economic problem. It not only causes severe land degradation and soil loss, but also threatens the stability and health of the society and, in general, its sustainable development. Soil erosion is related with different soil characteristics, measurements and its calculations. The soil erodibility...

Assessing impacts of different factors on soil erosion is crucial for developing management of watershed resources. The present study aimed at determining the effect of rainfall intensity (RI) and slope steepness (SS) on sediments subjected to raindrop detachment (RD), transport by raindrop splash (ST), raindrop-induced flow transport (RIFT) and tr...

The Water-Energy-Food nexus (WEF) has been initially introduced in the international community as an adaptive management approach in response to climate change. This study aims to review and analyze the existing literature on WEF nexus approach at different scales and to suggest supplementary ideas for better applicability of WEF nexus framework in...

Designation of representative watersheds (RWs) as a reference area representing key behavior of the whole region is an essential tool to provide a time and cost-effective basis for monitoring watershed performance against different driving forces. It is more important in developing countries facing lack of necessary investments in one hand and ever...

Background and Objectives: Achieving to sustainable development is not possible without conservation of soil and water resources and reducing land degradation. On the other hand, in the low density-vegetation lands, biological soil crusts induced by the activity of soil microorganisms play an important role in conserving and improving of soil stabi...

The adoption of appropriate managerial approaches mainly depends upon proper monitoring and consequent assessment of ecosystems health. Towards that, the watershed health monitoring has gained recognition among regulating agencies such as Environmental Protection Agency (EPA). However, its importance has not been considerably taken into account by...