Dr DMSLB Dissanayake

• Ph.D. in Science (Geoenvironmental Sciences); Master of Philosophy in Geography; Master of Science in Geo-Informatics
• Senior Lecturer at Rajarata University of Sri Lanka

Many environmental problems are human induced, one of which is the change in atmospheric composition, a hot research topic in recent decades. This study aims to investigate the impact of human capital (HC) on carbon dioxide (CO2) emissions in Sri Lanka using time series annual data from 1978 to 2019. The time series data were examined for a unit ro...

Hotels make negative externalities on both physical and socioeconomic environments. Most of the interventions traditionally used to address these impacts do not offer long-term solutions. Adopting and implementing Cleaner Production (CP) can be accepted as an innovative approach to addressing these problems holistically and sustainably. With that b...

The quantitative study investigated the determinants of students’ satisfaction with their online learning experience at Sri Lankan universities during the COVID-19 pandemic. The data was collected from 1376 undergraduates enrolled in various courses in humanities and social sciences at three state-owned universities in the country. The results of t...

Landslides have become a frequent natural hazard and pressing severe environmental issues in Sri Lanka. The upward trend in high-intensity rainfall events, growing population, expansion of plantation, and lifelines increased the landslide risk of the country. Though developed countries adopted in risk assessment-based management, conversely, they r...

Forest-cover change has become an important topic in global biodiversity conservation in recent decades because of the high rates of forest loss in different parts of the world, especially in the tropical region. While human interventions are the major cause, natural disasters also contribute to forest cover changes. During the past decades, severa...

Changes in the urban landscape resulting from rapid urbanisation and climate change have the potential to increase land surface temperature (LST) and the incidence of the urban heat island (UHI). An increase in urban heat directly affects urban livelihoods and systems. This study investigated the spatiotemporal variation of the UHI in the Kurunegal...

This study focuses on investigating the spatiotemporal changes of the built-up area and its change patterns in the Colombo metropolitan area, Sri Lanka. The same was achieved by employing the multi-temporal satellite data and geospatial techniques between 1988 and 2019. Remote sensing data were employed, and built-up areas were derived using spatia...

This study investigated the spatiotemporal changes of land use land cover (LULC) and its impact on land surface temperature (LST) in the Galle Municipal Council area (GMCA), Sri Lanka. The same was achieved by employing the multi-temporal satellite data and geo-spatial techniques between 1996 and 2019. The post-classification change detection techn...

The blooming of urban expansion has led to the improvement of urban life, but some of the negative externalities have affected the life quality of urban dwellers, both directly and indirectly. As a result of this, research related to the quality of life has gained much attention among multidisciplinary researchers around the world. A number of atte...

Changing of land use types and formation of the new pattern is a common phenomenon in dynamic urban agglomeration. Studying the spatiotemporal changes of the urban pattern is an important, timely task for the decision-making purpose of city sustainability. The research objective is to capture spatiotemporal variations of the built-up area and how t...

Although urbanization has contributed to improving living conditions, it has had negative impacts on the natural environment in urbanized areas. Urbanization has changed the urban landscape and resulted in increasing land surface temperature (LST). Thus, studies related to LST in various urban environments have become popular. However, there are fe...

The urban heat island (UHI) phenomenon is an important research topic in the scholarly community. There are only few research studies related to the UHI in the Seoul metropolitan area (SMA). Therefore, this study examined the impact of urbanization on the formation of UHI in the SMA as a geospatial study by using Landsat data from 1996, 2006, and 2...

Although urbanization has contributed to improving living conditions, it has had negative 18 impacts on the natural environment in the urbanized areas. Urbanization has changed the urban 19 landscape and resulted in increasing land surface temperature (LST). Thus, studies related to LST in 20 various urban environments have become a popular researc...

Urbanization has facilitated to improve the living standards of the urban population, but it has a negative impact on the natural environment of the urban areas. Urbanization has changed the urban landscape and resulted in increasing the land surface temperature (LST). Thus, studies related to LST in various urban environments have become a popular...

An urban heat island (UHI) is a phenomenon that shows a higher temperature in urban areas compared to surrounding rural areas due to the impact of impervious surface (IS) density, and other anthropogenic activities including changes of land use/land cover (LULC). The purpose of this research is to examine the spatiotemporal land-use/land-cover chan...

Forecasting landscape changes is vital for developing and implementing sustainable urban planning. Presently, apart from lowland coastal cities, mountain cities (i.e., hill stations) are also facing the negative impacts of rapid urbanization due to their economic and social importance. However, few studies are addressing urban landscape changes in...

Exploring changes in land use and land cover (LULC) in the city area and its surrounding is important to understand the variation of surface urban heat island (SUHI) and surface urban heat island intensity (SUHII). The SUHII can be calculated based on the local climate zone by using land use and land cover compossition of the city and based on the...

Rapid urban growth often replaced urban vegetation with impervious surfaces. It tend to lead to increase land surface temperature (LST) and to form urban heat islands (UHI). This is a severe issue of urbanized cities because the increase of LST badly affects the well-being of the life and environments of the cities. The Seoul Metropolitan City (SMC...

Urbanization has bloomed across Asia and Africa of late, while two centuries ago, it was confined to developed regions in the largest urban agglomerations. The changing urban landscape can cause irretrievable changes to the biophysical environment, including changes in the spatiotemporal pattern of the land surface temperature (LST). Understanding...

Water based soil erosion is a serious socio-economic and environmental problem across the world especially in the tropical region. Assessing the soil erosion quantitatively and spatially provides information to prioritize the soil conservation area in sustainable land management view point. Among the other soil erosion approaches, erosion modeling...

The urban heat island (UHI) and its consequences have become a key research focus of various disciplines because of its negative externalities on urban ecology and the total livability of cities. Identifying spatial variation of the land surface temperature (LST) provides a clear picture to understand the UHI phenomenon, and it will help to introdu...

Urbanization addresses urban expansion, and it leads conversion of the green space into the built-up area. However, previous studies mainly focused on two-dimensional (2D) urban expansion rather than three-dimensional (3D) growth. Here, the purpose of this study is to examine the urban expansion, including built-up and green space for both horizont...

Presently, the urban heat island (UHI) phenomenon, and its adverse impacts, are becoming major research foci in various interrelated fields due to rapid changes in urban ecological environments. Various cities have been investigated in previous studies, and most of the findings have facilitated the introduction of proper mitigation measures to over...

Water-based soil erosion is a serious socioeconomic and environmental problem across the world, especially in tropical regions. Assessing the soil erosion in quantitatively and spatially with the erosion-prone area provides information to prioritize the task in sustainable management for planning aspirations. Among the other soil erosion approaches...

Soil erosion is one of the main reasons for low crop productivity. Identification of areas vulnerable to soil erosion is crucial in applying soil conservation measures especially in river basin. Kirindi Oya river basin is one of the important river basins that supply irrigation for the downstream dry zone of Sri Lanka. This study assessed the soil...

Web Geographical Information System (GIS) is a new pattern for delivering GIS capabilities into the hands of the people excepting geographical boundary and one pathway to access the Global village which is new paradigm in the cyber space application. GIS related spatial field data collection is required for many reasons. such as Ground Control Poin...

See the attachment

ගංගාද්‍රෝණි කළමණාකරණයේදි භූගෝල විද්‍යා තොරතුරු පද්ධති භාවිතය

Soil erosion and its impact

See the attachment

See the attachment

See the attachment