Rajesh Bahadur Thapa

Rajesh Bahadur Thapa
International Centre for Integrated Mountain Development | ICIMOD · Geospatial Solutions

PhD in Geoenvironmental Science

About

108
Publications
63,100
Reads
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2,441
Citations
Citations since 2016
35 Research Items
1779 Citations
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2016201720182019202020212022050100150200250300
2016201720182019202020212022050100150200250300
Introduction
My research interests include optical/SAR remote sensing applications, land use–land cover classification, land change analysis and spatial modelling, multi-criteria analysis, and forest carbon modelling with LiDAR, SAR, and optical data. My works: http://publicationslist.org/rajesh.thapa Verified reviewer: https://publons.com/a/612083/
Additional affiliations
April 2015 - September 2016
University of Tsukuba
Position
  • Professor
April 2011 - September 2016
Japan Aerospace Exploration Agency
Position
  • Researcher
April 2009 - March 2011
University of Tsukuba
Position
  • JSPS Post Doc Fellow
Education
April 2006 - March 2009
University of Tsukuba
Field of study
  • Life and Envrionmental Sciences
May 2002 - December 2003
Asian Institute of Technology
Field of study
  • Remote Sensing and GIS

Publications

Publications (108)
Article
Full-text available
Kathmandu is the capital of Nepal and forms the core of the nation’s most populous urban region. The city has been important economically, administratively, and politically for hundreds of years. With its ancient monuments scattered around, Kathmandu is an emerging city where several plans and concepts have been implemented for its development. Lik...
Article
Full-text available
This paper examines the spatiotemporal pattern of urbanization in Kathmandu Valley using remote sensing and spatial metrics techniques. The study is based on 33-years of time series data compiled from satellite images. Along with new developments within the city fringes and rural villages in the valley, shifts in the natural environment and newly d...
Article
Full-text available
This article explores the driving factors of urban growth in Kathmandu Valley using analytic hierarchy process. The dynamic pattern of urban growth in the valley has been greatly influenced by seven driving factors: physical conditions, public service accessibility, economic opportunities, land market, population growth, political situation, and pl...
Article
Full-text available
This paper presents an integrated technique of analytical hierarchical process (AHP) and geographic information system (GIS) to evaluate the land for peri-urban agriculture. Hanoi province, Vietnam was selected for the case study. Transformation of conventional agriculture to modern cash crops is the current trend in peri-urban Hanoi. A field surve...
Article
Full-text available
Urban areas are expanding at a very fast rate worldwide. The task of managing urban growth has increased in both scope and complexity and has become one of the most important challenges in the 21st century. This article aims to examine the urban development and optimize spatial patterns of future urban growth allocation based on scenarios to provid...
Poster
Full-text available
There is an increasing demand for accurate estimation of aboveground forest carbon stocks to address climate change mitigation actions. In this regard, REDD+ implementation needs reliable and accurate baseline information on forest carbon stocks and stock changes. Countries are still lacking in the accurate measurement of aboveground forest carbon...
Conference Paper
Full-text available
In this research satellite images of Surkhet Valley from 1989 to 2019 were analyzed to observe changes in the LULC pattern. The work is followed by the future simulation of urban growth. An object-based image classification method was used to prepare LULC maps of each year whereas Cellular Automata (CA)-Markov change prediction was applied for futu...
Article
Full-text available
Forest fire has been one of the compelling issues in the Hindu Kush Himalayan (HKH) region. To promote regeneration, clearing fields for agriculture, hunting, and security reasons, local people deliberately set forests on fire. In this paper, active fire incidents, temperature, precipitation, and the changes of Aerosol Optical Depth (AOD) and Carbo...
Book
Full-text available
Over the next couple of decades, jobs across the globe will increasingly require digital literacy and information and communications technology skills, and likely involve the use of geospatial technologies such as Earth observation (EO) and geospatial information technology (GIT). Despite the growth of EO and GIT, the number of women professionals...
Chapter
In the first phase, SERVIR-HKH placed high importance on developing application products and tools to demonstrate the usefulness of earth observation (EO) and geospatial information in supporting decision-making on various thematic areas including land cover mapping, forest fire monitoring, agriculture and food security, disasters, and air quality...
Chapter
The year 1957 marked the start of a new era in human history with the launch of Sputnik, thus began the journey of Earth observation (EO). Then, in the early 1960s, with rapid developments in space technology and the race to reach the moon, scientific discussions veered toward the potential applications of EO in the fields of geography, agriculture...
Chapter
During the last decade, SERVIR has been striving for realizing its vision of “Space to Village” by implementing services that provide innovative solutions to improve livelihoods and foster self-reliance with the help of EO and geospatial technologies. Over these years, there has been significant development in the field of EO and geospatial technol...
Chapter
Full-text available
In the HKH region, large areas in Afghanistan, Bangladesh, China, India, Myanmar, Nepal, and Pakistan get inundated by floodwater during every rainy season. Among them, Bangladesh has been experiencing record-high floods where four types prevail: flash flood, local rainfall flood, monsoon river flood, and storm-surge flood; and these occur almost e...
Chapter
Full-text available
The innovative transformation in geospatial information technology (GIT) and Earth observation (EO) data provides a significant opportunity to study the Earth’s environment and enables an advanced understanding of natural and anthropogenic impacts on ecosystems at the local, regional, and global levels (Thapa et al. in Carbon Balance Manag 10(23):1...
Article
The accuracy assessment is vital to validate the remotely sensed thematic output before being front to the users. The statistical accuracy measures and modeling have been using widely for the accuracy assessment of the remote sensing product. This study uses six open-access land cover products-Land Cover of Nepal 2010, GlobeLand30, Treecover2010, G...
Book
This open access book is a consolidation of lessons learnt and experiences gathered from our efforts to utilise Earth observation (EO) science and applications to address environmental challenges in the Hindu Kush Himalayan region. It includes a complete package of knowledge on service life cycles including multi-disciplinary topics and practically...
Article
Full-text available
Major rivers from the Himalayas carry a high volume of sedimentation, and deposit it across the Bay of Bengal in Bangladesh. This has caused significant changes in the morphology of the bay, including the development of islands across the bay area. However, few studies have been carried out on the morphological changes, especially the development o...
Article
Full-text available
Myanmar has been experiencing a significant amount of deforestation and forest degradation in recent years. Being a developing country, people are heavily dependent on its forest for sustenance and livelihood. This study examines a methodology to identify potential drivers and their relative significance for deforestation. The study was tested in o...
Article
The accuracy assessment is vital to validate the remotely sensed thematic output before being front to the users. The statistical accuracy measures and modeling have been using widely for the accuracy assessment of the remote sensing product. This study uses six open-access land cover products-Land Cover of Nepal 2010, GlobeLand30, Treecover2010, G...
Article
Full-text available
The study conducted forest carbon assessments in 42 sample plots, with one hectare as the sampling plot size. Data on above-ground carbon pools like above-ground tree, sapling, and seedling were collected, along with soil organic data, to measure the total carbon stock. The result of the data analysis shows chances of enhancement and possibilities...
Article
Full-text available
The Hindu Kush Himalaya (HKH) region is among the most discrete and diverse region facing various ecological, environmental and socio-economic threats in terms of increasing demands for natural resources and its consequences in the form of overexploitation, disaster, droughts, extreme weather, and climate change etc. Geospatial information technolo...
Article
Full-text available
Biodiversity characters of the landscape provide basis of prioritizing the sites in conservation effort. There is an urgent need for rapid assessment of existing biodiversity using state-of-art tools and technologies at large scale. The purpose of the study is to model and prioritize biological richness based on multi-criteria decision analysis (MC...
Article
Full-text available
While the Earth observation (EO) data and geospatial information technology (GIT) are getting more open and accessible, lack of skilled human resources and institutional capacities are limiting effective applications in the Hindu Kush Himalayan (HKH) region. This paper aims to present the capacity building approach and applications designed to fill...
Article
Changing forest landscape is a global phenomenonand an indicator of deforestation and forest degradation. Utilization of remote sensing technology gives a unique opportunity to map, estimate and identifythese indicators. This study aims to trace land cover patterns and the forest cover change in five districts namely, Sankhuwasabha, Bhojpur, Sunsar...
Article
Full-text available
The preference for a son at birth is one of the key issues of demographic studies conducted in less-developed countries; however, exploration of preference for sex of children among women in Nepal is rare. This paper estimates the likelihood of preference for a son or a daughter using the 2016 Nepal Demographic and Health Survey (NDHS) data, which...
Book
Full-text available
This Handbook main objective is to translate knowledge gained from decades of research in SAR into practical guidance to countries on how SAR can be used for forest monitoring and biomass estimation. This Handbook represents a joint contribution from the U.S. government-led SilvaCarbon initiative, and the joint NASA-USAID SERVIR program, to support...
Article
This article compares and assesses eight remotely sensed maps of Philippine forest cover in the year 2010. We examined eight Forest versus Non-Forest maps reclassified from eight land cover products: the Philippine Land Cover, the Climate Change Initiative (CCI) Land Cover, the Landsat Vegetation Continuous Fields (VCF), the MODIS VCF, the MODIS La...
Article
Full-text available
FOREST COVER CHANGE is an important aspect of global environmental change because of rapid deforestation in tropical areas. Anthropogenic activities and natural phenomena can cause deforestation and forest degradation that adversely impacts biodiversity and ecosystem services. In 2008, the United Nations Convention on Climate Change (UNFCCC) progra...
Presentation
Full-text available
Urban areas are expanding at a very fast rate worldwide. The task of managing urban growth has increased in both scope and complexity and has become one of the most important challenges in the 21st century. This talk aims to present applications of Earth observation information and geospatial techniques to examine the urban development process in t...
Article
Full-text available
Due to globalization and internationalization of education, the importance of English language has been growing consistently. Like many other countries around the globe, English is taught as a compulsory subject from the primary level in Nepal. Despite continuous public and private efforts, achievement in English education is not satisfactory, espe...
Chapter
Full-text available
This chapter analyzes the origin and brief history of the Kathmandu Metropolitan Area (KMA), the national capital of Nepal, which forms the core of the nation’s most populous metropolitan area. It examines the urban primacy , urban land use/cover change patterns, and driving forces that influence the rapid urbanization of the KMA. In addition, it d...
Article
Full-text available
The Advanced Land Observing Satellite-2 (ALOS-2, "DAICHI-2") has been observing Nepal with the Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) in response to an emergency request from Sentinel Asia related to the Mw 7.8 Gorkha earthquake on April 25, 2015. PALSAR-2 successfully detected not only avalanches and local crustal displacem...
Article
Full-text available
The interferometric SAR coherence-change technique with coherence filter and polarization (HH and HV) has been used to detect the parts of buildings damaged by the 2015 Gorkha Earthquake. A survey of the building damage was conducted in every house to evaluate the detection accuracy in the Khokana and Sankhu urban areas in the Kathmandu Valley of N...
Article
Full-text available
An earthquake with magnitude of 7.8 (Mw) occurred at 11:56 NST (local time) on April 25, 2015, in the center of Nepal. The National Research Institute for Earth Science and Disaster Prevention (NIED) organized a damage survey team, which was dispatched to the affected area on several occasions following the earthquake (May 26 to June 3: first trip,...
Article
Full-text available
Pi-SAR-L2 full polarimetic data observed in four different observational directions over a landslide area on Izu Oshima Island, induced by Typhoon Wipha on 16 October 2013, were analyzed to clarify the most appropriate L-band full polarimetric parameters and observational direction to detect a landslide area. Japanese airborne Pi-SAR-L2 and PiSAR-L...
Article
Full-text available
This study examines the potential of airborne PiSAR-L2 data for estimating forest carbon stocks in central Sumatra. Polarimetric interferometric Synthetic Aperture Radar L-band-2 (PiSAR-L2) is a second-generation airborne sensor developed by JAXA. We acquired full polarimetric data at a fine spatial resolution of 2.5 m during the PiSAR-L2 flight ca...
Article
Full-text available
Geospatial techniques based on remote sensing and geographic information system (GIS) are important in urban studies. However, based on traditional techniques, the analysis of the intensity and spatial pattern of urban land use is, in most cases, based only on the lateral extent of built-up lands (two-dimensional). The increasing availability of ge...
Article
Full-text available
In this tutorial, I focus on introduction of land use and land cover classification using PALSAR Mosaics data. The mosaic data was created using the strip map fine beam dual mode of Phase Array L-band Synthetic Aperture Radar known as PALSAR sensor onboard Advanced Land Observation Satellite (ALOS). This tutorial is a part of JAXA’s capacity buildi...
Conference Paper
Full-text available
Mapping and monitoring of forest land use and land cover change using spaceborne remote sensing techniques are emerging rapidly. Currently, optical and synthetic aperture radar (SAR) data are widely available from spaceborne sensors. Depending on applications each of them has limitations and benefits. For instance, the optical images are easy to in...
Article
Full-text available
The temporal variations (diurnal and annual) in arboreal $(varepsilon_mathrm{Tree})$ and bare soil $(varepsilon_mathrm{Soil})$ dielectric constants and their correlation with precipitation were examined for several trees in Japan. A significant (1 $sigma$ (standard deviation) and 2 $sigma$) $varepsilon_mathrm{Tree}$ increase is observed after rainf...
Article
Full-text available
Background: Efforts to reduce emissions from deforestation and forest degradation in tropical Asia require accurate high-resolution mapping of forest carbon stocks and predictions of their likely future variation. Here we combine radar and LiDAR with field measurements to create a high-resolution aboveground forest carbon stock (AFCS) map and use s...
Conference Paper
Full-text available
In this research, we present methods for monitoring deforestation and examining implication of the forest policies in forest carbon stocks in the future utilizing ALOS-PALSAR data. Riau Province of central Sumatra is selected for the study as it has received worldwide attention due to high forest–related carbon emissions. An aboveground forest carb...
Article
Full-text available
Urban growth is recognized as physical and functional changes due to the transition of rural landscapes to urban forms. The time-space relationship plays an important role in understanding the dynamic process of urban growth. This dynamic process consists of a complex nonlinear interaction between several components, i.e., topography, rivers, land...
Article
Full-text available
Four global mosaics of Advanced Land Observing Satellite (ALOS) Phased Arrayed L-band Synthetic Aperture Radar (SAR) HH and HV polarization data were generated at 25 m spatial resolution using data acquired annually from 2007 to 2010. Variability in L-band HH and HV gamma-naught (γ0) for forests was observed between regions, with this attributed to...
Article
Numerous classification algorithms have been proposed to create accurate classification maps using optical remote sensing data. However, few comparative studies evaluate the performance of classification algorithms with focus on tropical forests due to cloud effects. Advances in synthetic aperture radar (SAR) techniques and spatial resolution, mapp...
Article
Quantifying amount of carbon stored in tropical forests remains challenging and retains greatest uncertainties in understanding their role in the global carbon cycle. This uncertainty demands methods that can accurately and precisely measure forest carbon dynamics and provide carbon density map for a larger geographic extent. In this study, we exam...
Conference Paper
Full-text available
Japan Aerospace Exploration Agency (JAXA) and Ministry for Research and Technology of Indonesia (RISTEK) have jointly conducted the L-band airborne SAR flight campaign in Indonesia between Aug. 4 and Aug. 8 of 2012. The SAR involved in this campaign is the JAXA's Polarimetric Interferometric Airborne Synthetic Aperture Radar of L-band version 2, sh...