Land use and land cover changes are one of the factors driving global environmental change. The c... more Land use and land cover changes are one of the factors driving global environmental change. The changes in the earth's surface can provide valuable insights into the interaction between the natural environment and human activities. This study was conducted to analyze Landsat satellite data to map the surface characteristics of the area and analyze the trend of land use and land cover (LULC) changes in Penampang, Sabah. The remote sensing and GIS approach is used by researchers as the main application to examine the degree of land use change that occurs. The supervised application process is also used by researchers to identify the type of soil change in the study area based on the selected Landsat image. Analysis of land use change in the study area is from 2000 to 2014. Accuracy assessments were also performed by the researchers using Koeffisein Kappa calculations to test the reliability of the classified data. The value of Koeffisein Kappa obtained is 0.987 (98%) which is the reliability of the data is high. The results of the current study clearly show that land, water, and forest areas are still plentiful. This situation is significant with relatively moderate urbanization occurs on the West Coast of Sabah. Meanwhile, the conversion of agricultural land to urban areas was also found. The results of the analysis that has been done can show that the location of the study, namely Penampang, Sabah is also no exception to the urbanization process. Penampang District as a whole covers an area of 42,473.42 hectares (424.73 square kilometers) which is largely a highland and natural forest area.
GEOGRAFIA OnlineTM Malaysian Journal of Society and Space, 2021
Water resources are nature's most precious gift in life on this earth. Humans need to have ethics... more Water resources are nature's most precious gift in life on this earth. Humans need to have ethics in environmental development to caring the environment. The rapid development to meet human needs and requirements has caused the source of clean water supply to be more limited and threatened. This study aims to analyze the factors and effects of water supply disruption to the community in Penang Island. This study employs a quantitative approach, with a survey consisting of 100 questionnaires distributed to respondents. The study also uses an informal interview method that records some of the respondents' thoughts and opinions about the research issues. Respondents were selected randomly to be involved in the data collection process. The results of the data were analyzed to obtain the value of frequency, percentage, mean, std. deviation, and descriptive analysis. According to the study's findings, the most influential factor of disruption of water supply consumption is a lack of capacity of the water treatment plants, which recorded a total mean=4.36, and the least influential factor is weaknesses in water management, which recorded a total mean=3.48. The most dominant effect of water supply disruption is the disease that affects health, with a mean score of 4.30, the least influential effect is a reduction in the life of flora and fauna, with a mean score of 3.61. This study has the potential to provide information to authorities and stakeholders in formulating strategies and interventions for the well-being of the community. The recommendation for future studies is to further expand the scope of the study which is to add more survey stations and the number of samples to describe the actual population.
Many hyperspectral vegetation indices (VIs) have been developed to estimate crop nitrogen (N) sta... more Many hyperspectral vegetation indices (VIs) have been developed to estimate crop nitrogen (N) status at leaf and canopy levels. However, most of these indices have not been evaluated for estimating plant N concentration (PNC) of winter wheat (Triticum aestivum L.) at different growth stages using a common on-farm dataset. The objective of this study was to evaluate published VIs for
Land use and land cover changes are one of the factors driving global environmental change. The c... more Land use and land cover changes are one of the factors driving global environmental change. The changes in the earth's surface can provide valuable insights into the interaction between the natural environment and human activities. This study was conducted to analyze Landsat satellite data to map the surface characteristics of the area and analyze the trend of land use and land cover (LULC) changes in Penampang, Sabah. The remote sensing and GIS approach is used by researchers as the main application to examine the degree of land use change that occurs. The supervised application process is also used by researchers to identify the type of soil change in the study area based on the selected Landsat image. Analysis of land use change in the study area is from 2000 to 2014. Accuracy assessments were also performed by the researchers using Koeffisein Kappa calculations to test the reliability of the classified data. The value of Koeffisein Kappa obtained is 0.987 (98%) which is the reliability of the data is high. The results of the current study clearly show that land, water, and forest areas are still plentiful. This situation is significant with relatively moderate urbanization occurs on the West Coast of Sabah. Meanwhile, the conversion of agricultural land to urban areas was also found. The results of the analysis that has been done can show that the location of the study, namely Penampang, Sabah is also no exception to the urbanization process. Penampang District as a whole covers an area of 42,473.42 hectares (424.73 square kilometers) which is largely a highland and natural forest area.
GEOGRAFIA OnlineTM Malaysian Journal of Society and Space, 2021
Water resources are nature's most precious gift in life on this earth. Humans need to have ethics... more Water resources are nature's most precious gift in life on this earth. Humans need to have ethics in environmental development to caring the environment. The rapid development to meet human needs and requirements has caused the source of clean water supply to be more limited and threatened. This study aims to analyze the factors and effects of water supply disruption to the community in Penang Island. This study employs a quantitative approach, with a survey consisting of 100 questionnaires distributed to respondents. The study also uses an informal interview method that records some of the respondents' thoughts and opinions about the research issues. Respondents were selected randomly to be involved in the data collection process. The results of the data were analyzed to obtain the value of frequency, percentage, mean, std. deviation, and descriptive analysis. According to the study's findings, the most influential factor of disruption of water supply consumption is a lack of capacity of the water treatment plants, which recorded a total mean=4.36, and the least influential factor is weaknesses in water management, which recorded a total mean=3.48. The most dominant effect of water supply disruption is the disease that affects health, with a mean score of 4.30, the least influential effect is a reduction in the life of flora and fauna, with a mean score of 3.61. This study has the potential to provide information to authorities and stakeholders in formulating strategies and interventions for the well-being of the community. The recommendation for future studies is to further expand the scope of the study which is to add more survey stations and the number of samples to describe the actual population.
Many hyperspectral vegetation indices (VIs) have been developed to estimate crop nitrogen (N) sta... more Many hyperspectral vegetation indices (VIs) have been developed to estimate crop nitrogen (N) status at leaf and canopy levels. However, most of these indices have not been evaluated for estimating plant N concentration (PNC) of winter wheat (Triticum aestivum L.) at different growth stages using a common on-farm dataset. The objective of this study was to evaluate published VIs for
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