Janaki Sandamali

General Sir John Kotelawala Defence University · Department of Spatial Sciences

Changes in land use and land cover (LULC) are currently mainly caused by rapid physical development and agricultural operations. Sri Lanka, in particular, is significantly reliant on paddy production, as rice is the country’s staple meal. In terms of rice output, the Hambantota district ranks seventh in Sri Lanka. Sooriyawewa, in the Hambantota dis...

Land-Use and Land-Cover (LULC) change research is a type of environmental research that is closely associated with socioeconomic development. At present, the LULC changes mainly occur due to physical developments and agricultural processes. Paddy is one of the major crops grown in Sri Lanka. Hambantota district is ranked in the fifth place in rice...

Prosopis juliflora is an invasive species that exhibits an aggressive growth pattern in a short period by affecting the native communities. It had been introduced to the Hambanthota District in Sri Lanka in the 1950s for stabilizing salt-affected soil in the coastal area. Consequently, the plant had invaded the Bundala National Park, the first RAMS...

The scientific and geographical identification of weather extremes is an essential component in routine life. Further, the understanding of these weather extremes vital in future planning, policy implementation, and developments. Most of the hazards occurred in a small time and in high magnitude hence people keen on those hazards. But among all haz...

Drought is one of the main disasters that act as a silent killer among Sir Lanka and it is the disaster that affects the highest number of people over the country. Therefore, it requires systematic and scientific investigation to study the magnitude of the drought. Monaragala district can be identified as one of the high drought-affected areas in t...

The accelerated movement of persons towards cities and urban areas has increased significantly in recent decades. Most of the commercial places are located around the urban areas targeting the urban population. The increase in the population of cities has a significant impact on the volume of household waste produced, which needs to be collected an...

Forest fire far could be considered as one of the majors concerning environmental issues mainly in tropical climate regions. In Sri Lanka, forest plantations and "sparsely used croplands" are the further most vulnerable areas of a forest fire. The case study was based on the forest fire reported in the Ella Rock region in 2019. The remote sensing t...

The burning of forest areas in Sri Lanka can be considered as one of the foremost issues that should be addressed. Human influence could be identified as the major cause of forest fires in Sri Lanka. Hence, identification, mapping, and taking necessary actions for forest fires are vital in the current context. The forest fire that occurred in the E...

Wireless telecommunication is broadly utilized around the world and Sri Lanka, particularly due to increased use of mobile users, and the conversion of mobile phone into a primary essentiality of a person. High population density of the urban or suburban areas requires the establishment of telecommunication towers because the service providers...

Rapid industrialization one of the concerns that lead to climate change in the current world. With the advancement of industrialization declining vegetation cover inversely proportional to the raise of built-up areas. Export processing zones (EPZ) are playing a vital part in the economy of any country and usually associate with some environmental i...

The rapid utilization of remote sensing (RS) satellites and techniques has provided a reliable and effective platform to characterize terrestrial properties. Precise extraction of water bodies by using RS is significant at present. Multiple methods including supervised classification (Support Vector Machine (SVM)) and vegetation index method (Norma...

Geographic Information Systems(GIS) could be identified as a leading application mechanism that grows beyond in each and every aspect of the world. The GIS applications in decision-making in the military field was gradually increasing nowadays. This study oriented to compare the application of GIS in foreign armies and find a suitable GIS applicati...

The accelerated movement of people to cities has led to the fact that the urban population of the world is now growing by 60 million people annually. The increased population of cities has a significant impact on the volume of household waste produced, which must be collected and recycled in due time. There are a wide range of challenges to collect...

Drought is one of the main disasters that act as a silent killer among Sir Lanka and it is the disaster that affects the highest number of people over the country. Further can identify different types of droughts such as Meteorological drought, Hydrological drought, Agricultural drought, physical Drought, and Socio- economic drought. Under the inve...

This project is about crime analysis in Anuradhapura district. Today in Sri Lanka the crimes are become increase. Therefore, it must be minimized. If it is not, it becomes a huge problem in Sri Lanka. This problem can be easily minimized if there has a fast and accurate method to identify crime areas and also identify about if there have any patter...

In the current context, waste dumping could be identified as the foremost and rising issue of Sri Lanka. Still, Sri Lanka has not followed a proper waste recycling system and as a result, the number of waste dumping sites was increased in nearby suburbs and those locations endangered to nature. Therefore, systematic waste disposal and scientific lo...

Drought is one of the main disasters that act as a silent killer among Sir Lanka and it is the disaster that affects the highest number of people over the country. Further can identify different types of droughts such as Meteorological drought, Hydrological drought, Agricultural drought, physical Drought, and Socio- economic drought. Under the inve...

Kalutara is the major city in Kalutara District, Western Province, Sri Lanka. Kalido Beach is a strip of beach that runs between Kalu Ganga and the Indian Ocean. It is known for its unique ecosystem. Nonetheless in recent years it facing challenges such as natural erosion from the sea, tourist visits, and pollutions. In addition to that recently it...

Nowadays Rapid urbanization is the foremost swelling problem in society. The building layer growth and the vegetation layer reduction lead to acceleration of urban temperature within the time. This increasing phenomena identified as an Urban Heat Island (UHI) effect in most of the suburb areas. In Sri Lanka, there are several identical cities that...

Nowadays Rapid urbanization is the foremost swelling problem in society. The building layer growth and the vegetation layer reduction lead to acceleration of urban temperature within the time. This increasing phenomena identified as an Urban Heat Island (UHI) effect in most of the suburb areas. In Sri Lanka, there are several identical cities that...

The potential land suitability assessment for tea is a crucial step in determining the environmental limits of sustainable tea production. The aim of this study was to assess land suitability to determine suitable agricultural land for tea crops in Sri Lanka. Climatic, topographical and soil factors assumed to influence land use were assembled and...

Cadastral Surveying deals with ownership, boundaries, extent and value of land or property in a given area, mainly for the purpose of taxation. Traditional cadastral surveying approaches are always time consuming and require lot of efforts in field surveying especially in remote and mountainous areas. The photogrammetric technique is a possible sol...

The rapid utilization of remote sensing satellites and techniques has provided a reliable, effective, and near real time possibilities to characterize terrestrial ecosystem properties. Water body extraction by using remote sensing has been the most significant method in the investigation of water resources. Remote Sensing Satellite images can play...

Satellite perceptions give a helpful and groundbreaking database for assessing the elements of the earthbound biosphere as a result of its worldwide inclusion and a short return to interim. The accessibility of the long term Normalized Difference Vegetation Index (NDVI) information got from the Moderate Resolution Imaging Spectroradiometer (MODIS)...

National parks by far could be considered as the heart of a countries bio network. This study attempts to identify and analyze the forest cover and its changes in the Wilpattu national park of Sri Lanka, which has grown into a level of a national crisis. The rapid utilization of remote sensing satellites and techniques has provided a reliable and n...

National parks and forest reserves by far could be considered as the heart of a countries network. Both these important geographical phenomena are subjected to decay. This decay is a vague entity called deforestation, and one of the challenging tasks to estimate using multispectral satellite data. Deforestation is mainly triggered by timber product...