Assessment of Coastal Land Use Changes in Banten Bay, Indonesia Using Different Change Detection Methods

Many types of the coastal land use in Banten Bay have been assessed in order to know the change as evidently detected by Landsat imagery in 1994 and 2001. Image processing such as, supervised classification and various change detection techniques are performed to the satellite images. Red Green method showed the best result for detecting the coastal land use change. This method is suitable for detecting the increasing areas of the paddy fields and settlement. Image Differencing method is capable to detect the increasing areas in agriculture, decreasing in fishponds and natural areas. Image Ratioing method can be considered suitable for detecting the increasing area of fishponds, decreasing of paddy fields and agriculture areas. Each coastal land use type has increased, except for the natural area/brushwood. Most of agriculture and paddy fields areas have been converted to fish ponds

ASSESSMENT OF COASTAL LAND USE CHANGES IN BANTEN BAY, INDONESIA USING DIFFERENT CHANGE DETECTION METHODS

Many types of the coastal land use in Banten Bay have been assessed in order to know the change as evidently detected by Landsat imagery in 1994 and 2001. Image processing such as, supervised classification and various change detection techniques are performed to the satellite images. Red Green method showed the best result for detecting the coastal land use change. This method is suitable for detecting the increasing areas of the paddy fields and settlement. Image Differencing method is capable to detect the increasing areas in agriculture, decreasing in fishponds and natural areas. Image Ratioing method can be considered suitable for detecting the increasing area of fishponds, decreasing of paddy fields and agriculture areas. Each coastal land use type has increased, except for the natural area/brushwood. Most of agriculture and paddy fields areas have been converted to fish ponds. Key words: coastal land use/land cover, change detection method, remote sensin

Urban coral reefs: Degradation and resilience of hard coral assemblages in coastal cities of East and Southeast Asia

© 2018 The Author(s) Given predicted increases in urbanization in tropical and subtropical regions, understanding the processes shaping urban coral reefs may be essential for anticipating future conservation challenges. We used a case study approach to identify unifying patterns of urban coral reefs and clarify the effects of urbanization on hard coral assemblages. Data were compiled from 11 cities throughout East and Southeast Asia, with particular focus on Singapore, Jakarta, Hong Kong, and Naha (Okinawa). Our review highlights several key characteristics of urban coral reefs, including “reef compression” (a decline in bathymetric range with increasing turbidity and decreasing water clarity over time and relative to shore), dominance by domed coral growth forms and low reef complexity, variable city-specific inshore-offshore gradients, early declines in coral cover with recent fluctuating periods of acute impacts and rapid recovery, and colonization of urban infrastructure by hard corals. We present hypotheses for urban reef community dynamics and discuss potential of ecological engineering for corals in urban areas

Assessment of the mangrove forest in Ranong, Thailand for landscape biodiversity resources planning and management.

This study was conducted in Ranong, Thailand aiming to assess its mangrove forest and come up with a sustainable management plan. Geoinformatic techniques, socioeconomic survey and field inventory were used to characterize the six (6) study sites comprising seven (7) zones determined by cluster and ordination analysis. The Mueng district had the most number of mangrove patches (17). There were nineteen (19) mangrove tree species with Rhizophora apiculata as the most dominant. Scylla olivacea and Sardinella sp. were the dominant species of all the twenty-seven (27) identified aquatic fauna species. The highest diversity (2.01) and equitability (1.06) indices were in Zone III. The highest concentration index (0.47) was in Zone VII. The highest species richness index (3.425) was in Zone III and IV. The satellite images and remotely sensed data showed other land use types such as fish and shrimp ponds, forest covers, urban, district, villages and tourist sites. As compared with mangroves, the fish or shrimp pond patches appeared to be smaller in size, polygon in shape with random arrangement. Mueng had the highest pond patches (25) while the lowest (2) was in Laun. The district with highest number of villages was in Kraburi (61) while the lowest (15) was in Suk Samran. There were 26 sites with tourist attractions in Ranong, Thailand. A socioeconomic instrument with 60 respondents revealed that 73percent used mangroves as a source of construction materials, 2percent depended on mangroves for fuel with 22percent who could identify at least 5 species. All respondents confirmed that they largely depended on mangroves. Based on the Landsat images of Ranong and the results of the vegetation study, it is suggested that a biodiversity corridor be established with the dominant Rhizophora apiculata as the main reforestation species. A rehabilitated mangrove ecosystem can actually minimize the ill effects of tsunamis to lives and properties. Furthermore, the mangroves must be treated as a community owned area rather than as a common property when the locals treat the mangroves as their own, there is a greater chance for mangrove conservation, hence sustaining its benefits for the Ranong locals

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ABSTRACT Loi Island is connected with Sri Racha, Chonburi Province by a bridge. The fishermen and tourists use this island in many purposes. This research was investigated during September 2004-June 2005. Many kinds of data resource were used in this study such as geoinformatic system data and seawater current. From the final result showed that coastline is dynamics changed in every years and sensitive for protecting. The unique image in year of 2001 depicted a new bridge. Abandon of suspended solid was distribution around the coast. From human activity, size of Loi Island nowadays bigger than in year 1997 about 1.4 times, this was easy to interpret by remote sensing data. Although shape of new bridge was changed but seawater movement still having the same direction and speed have a little bit changed less than 10 % since under the bridge was still shallow. The seawater could not move in easy way

Evaluating the Climate Resilience of Agricultural Livelihoods Through the Impact of Climate Change on Sediment Loss and Retention—A Step Towards Ecosystem-Based Adaptation in Savannakhet Province, Lao People’s Democratic Republic

This study assesses the projected impacts of climate change on sediment retention and soil loss in Savannakhet Province, Lao PDR, through the application of the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) Sediment Delivery Ratio (SDR) model. Using climate projections under SSP2-4.5 and SSP5-8.5 scenarios for the mid- and late-21st century (2050 and 2080), compared against a 2015 baseline, the analysis quantifies changes in sediment dynamics and ecosystem service provision. Results reveal a substantial increase in sediment retention, particularly in forested and flooded vegetation areas, under moderate and high-emission pathways. However, an overall rise in soil loss is observed across croplands and urbanized zones, driven by intensified high-risk areas, which requires conservative management. This study advocates for ecosystem-based adaptation (EbA) strategies—including afforestation, intercropping, and riparian restoration—to enhance watershed resilience. These nature-based solutions align with national adaptation goals and offer co-benefits for biodiversity, climate regulation, and rural livelihoods

Land Use and Cover Changes in Dongsithouane National Production Forest in Lao PDR: A Case Study of Savannakhet Province

This is very important for studying in PhD</p

Assessing Multi-Hazard Livelihood Security and Resilience of Lower Mekong Basin Communities

&amp;lt;p&amp;gt;The Lower Mekong Basin (LMB) is a subsidiary region of the Mekong River, with approximately 10 million people directly dependent on the river for livelihood and economic activities. However, communities in the region are increasingly exposed to multiple hazards that have significant direct and indirect impacts on their livelihoods. The Asia-Pacific Network for Global Change Research, Japan supported project aims to develop a multi-stakeholder Livelihood Security and Resilience Assessment (LiSeRA) framework by studying the dimensions and factors influencing livelihood security and resilience in communities living in the LMB region.&amp;lt;/p&amp;gt; &amp;lt;p&amp;gt;This paper studies the multi-hazard scenario and impacts in the LMB region, the interlinkages between livelihood and resilience, and proposes a localized assessment framework that can be used by stakeholders in decision-making process. Floods, droughts and tropical storms were identified as primary natural hazards, while a multi-hazard assessment highlighted a wide spatial variation in the hazard levels across the region. The proposed framework provides a tool to measure the multi-hazard livelihood security and resilience in LMB communities, and can be used by government authorities and development partners in planning and implementing mitigation and preparedness activities to manage and reduce the risk of hazards.&amp;lt;/p&amp;gt;</jats:p

Multi-Hazard Livelihood Security and Resilience of Lower Mekong Basin Communities

The Lower Mekong Basin (LMB) is a subsidiary region of the Mekong River, with approximately 50 million people directly dependent on the river for livelihood and economic activities. However, communities in the region are increasingly exposed to multiple hazards that have significant direct and indirect impacts on their livelihoods. To implement efficient risk management strategies, it is important to understand the interlinkages between the different dimensions and factors that influence livelihood security and resilience in such communities. Through a literature review and expert workshop, this paper studies the multi-hazard scenario and impacts in the LMB region and the interlinkages between livelihoods and resilience in the LMB communities. The paper consolidates these findings and proposes a localized assessment framework that can be used by stakeholders in decision-making process. Floods and droughts were identified as primary natural hazards, while a multi-hazard assessment highlighted a wide spatial variation in the hazard levels across the region. The primary impacts of such hazards are on the agricultural communities dependent on the basin&rsquo;s ecosystem and natural resources for their livelihoods. A holistic framework has been proposed to measure the multi-hazard livelihood security and resilience in LMB communities that can be used by government authorities and development partners in planning and implementing mitigation and preparedness activities to manage and reducing the risk of hazards