Vahid Rahdari

University of Zabol · Hamoun International Wetland Research Institute

Ecosystem monitoring provides us with valuable information for modeling the future response to global changes and designing management plans. This paper clarifies the ability of ecosystem indices to monitor ecosystem degradation and restoration. The indices include the changes in landscape metrics, water birds’ habitat, changes in the extent of the...

Dry playa surfaces can be extremely vulnerable to disturbance which breaks their surface crusts resulting in increased aeolian sand and dust emissions. Trampling by livestock and motor vehicles is an important source of this disturbance. The Hamoun Lakes in the Sistan region of Iran are a major source area of dust storms which are causing damage to...

Wetland conservation is crucial in arid areas on account of the high dependence of life on these ecosystems. Quantifying the effects of drought on wetlands is the initial step toward conservation action under drought condition. In this study, the ability of Synthetic Aperture Radar (TerraSAR-X and Sentinel 1 images) to detect the drought impacts on...

Human well-being in a large part of the world depends on ecosystem services (ESs). However, humans degrade ESs directly by unsustainable land-use policies and indirectly by climate change. In this regard, how ecosystem services change due to human and climate change is a crucial question to demonstrate the human and climate change effects. This pap...

The present paper aims to quantify how human-made changes in the upstream exacerbate climate change impacts on water birds’ habitat in the downstream. To reduce climate change effects and design adaptation policies, it is important to identify whether human activities understate or overstate the effects of climate change in a region on its inhabita...

Climate change in arid areas leads to intensive drought, which causes widespread degradation in wetland ecosystems. Since wetlands play an important role in the sustainability of arid regions, climate change adaptation measures are required to conserve wetlands. However, how can we determine the regions that need increased adaptation measures? This...

Sand and dust storms (SDS) are a natural phenomenon dominantly originating in arid and semi-arid regions. The vastness and changing distribution of the SDS hotspots, their inaccessibility, and financial limitations are the greatest challenges to projects combating SDS. To boost project success, a prioritized site-selection method which incorporates...

The complex, dynamic and narrow boundaries between vegetation types make wetland mapping challenging. Hereafter the case study of the Hamoun-e-Hirmand wetland is considered by analysing eight Synthetic Aperture Radar (SAR) Images acquired in dry and wet periods with three wavelengths (X-band ~ 3 cm, C-band ~ 6 cm, and L-band ~ 25 cm), three polariz...

One important issue in wildlife conservation is the identification of the groups of species that need greater conservation measures. In this regard, maps of habitat degradation are useful tools. However, water bird habitat mapping in wetland ecosystem is difficult due to the large extent and complexity of wetlands and the narrow boundary between th...

Climate change and human activities have increased negative pressure on natural ecosystems. Wetlands are such ecosystems that widely affected by these negative changes. Birds as a part of wildlife in a wetland have damaged by destruction of wetlands, so, a large group of them, are at risk of extinction. Habitat destruction in wetlands in arid and s...

Although, high revisit time, free access and new capabilities to map the earth surface have made the Sentinel-1 Synthetic Aperture Radar (SAR) the favourable data source in the most recent studies but its role in arid regions has been neglected. Hence, in this paper, the Sentinel-1 images were applied to map the vegetation classes in an arid area....

ABSTRACT Negative impacts of climate change on ecosystems have been increasing, and both the intensification and the mitigation of these impacts are strongly linked with human activities. Management and reduction of human-induced disturbances on ecosystems can mitigate the effects of climate change and enhance the ecosystem recovery process. Here,...

Climate change is the most important challenge which its effects on ecosystems are increasing throughout the world. Human activities are strongly coupled with the mitigation and the intensification of climate impacts. In this paper, we assess the impacts of these activities in a semi-arid and water limited ecosystem undergoing droughts and severe c...

Determining the cultivation crops area is important for properly supplying crops. The aim of this study was mapping the cultivation area crops in Chadian city for spring and summer during 2015 by using the time series data of the Landsat 8 satellite of OLI imagery. At first, the under cultivation area was determined by setting a low threshold in th...

This study integrates the use of multi spectral imageries for LULC change detection using the Landsat 8, OLI for 2016 and the Landsat 5 for 1998, TM images. The study area is Pelasjan sub-basin, the Gavkhooni watershed’s upland and water resource of Gavkhooni international wetland. LULC maps were produced using hybrid classification. LULC Change de...

In order to protect ecosystem functions and structures, it is essential to identify areas with high conservation potentials. The present study investigates the use of Multi-Criteria Evaluation (MCE) Models and effects of trade-off levels on the results of land conservation capability in the Pelasjan sub-basin, western part of the Gavkhooni watershe...

Remote sensing data analysis can provide thematic maps describing land-use and land-cover (LULC) in a short period. Using proper image classification method in an area, is important to overcome the possible limitations of satellite imageries for producing land-use and land-cover maps. In the present study, a hierarchical hybrid image classification...

Chah Nimeh reservoirs have served as a water storage facility, especially during droughts over the last three decades. It is also an important wintering site for migratory birds. In this study, thematic mapper time-series data were derived from Landsat images for prolonged droughts that occurred in two satellite images (2002 and 2011). The data der...

Erratum to: Environ Earth Sci DOI 10.1007/s12665-013-3004-9The original article has been inadvertently published with incorrect title. The correct title is given below:“Multi-temporal landsat images based on eco-environmental change analysis in and around Chah Nimeh reservoir, Sistan and Balochestan (Iran)”.

This research used geospatial data to quantify biodiversity changes and landscape pattern change to track anthropogenic impacts of such changes at the Mouteh Wildlife Refuge (MWR), Isfahan, Iran. Satellite image duration of four decades, LandSat1-5, and IRS-P6 data were used to develop land cover classification maps for 1971, 1987, 1998, and 2011....

The mean annual precipitation (MAP) is the most important criterion used in drought classification. Different indices have been developed based on the MAP for drought classification, of which four most commonly used are: the percentage indices of normal (PN), the standardized precipitation index (SPI), deciles (DPI) and the rainfall anomaly index (...

Climate change, particularly the recent drought and excessive human exploitation of geo-environmental resources, has caused rapid changes in land-use and ground cover in many south-east areas of Iran. This study classified land-use/cover detection using a combination of multispectral and hyper-spectral images as innovative change detection techniqu...

Climate change, particularly the recent drought and excessive human exploitation of geo-environmental resources, has caused rapid changes in land-use and ground cover in many south-east areas of Iran. This study classified land-use/cover detection using a combination of multispectral and hyper-spectral images as innovative change detection techniqu...

Remote sensing provides useful tools for rangeland and vegetation cover studies. Vegetation crown cover mapping is one of satellite information applications in rangeland studies. In this study, IRS-P6, LISS III data was used to prduce vegetation crown cover map in Mouteh wild life sanctuary during June 2008. To achieve this goal, vegetation indices...

Landscape ecology as a modern interdisciplinary science offers new concepts, theories, and methods for land evaluation and management. One main part of landscape ecology is describing patterns in the landscape and interpreting the ecological effects of these patterns on flora, fauna, flow of energy and materials. Landscape studies require methods t...

One of the influential tools in the study field of pasture and vegetation cover science is technology of remote sensing and satellite data. Satellite data have essential role in preparing needed information for different vegetation aspects studying. One of the applications of satellite data is to prepare the vegetation cover percentage map. In this...

Landscape ecology as a modern interdisciplinary science offers new concepts, theories, and methods for land evaluation and management. One main part of landscape ecology is describing patterns in the landscape and interpreting the ecological effects of these patterns on flora, fauna, flow of energy and materials. Landscape studies require methods t...