Mangrove health assessment using spatial metrics and multi-temporal remote sensing data

Abstract

Mangrove forest plays a very important role for both ecosystem services and biodiversity conservation. In Vietnam, mangrove is mainly distributed in the Mekong delta. Recently, mangrove areas in this region decreased rapidly in both quality and quantity. The forest became bare, divided and scattered into many small patches, which was a major driver of ecosystem degradation. Without a quantitative method for effectively assessing mangrove health in the regional scale, the sustainably conserving mangrove is the challenge for the local governments. Remote sensing data has been widely used for monitoring mangrove distributions, while the characterization of spatial metrics is important to understand the underlying processes of mangrove change. The objectives of this study were to develop an approach to monitor mangrove health in Mui Ca Mau, Ca Mau province of Vietnam by utilizing satellite image textures to assess the mangrove patterns. The research result showed that mangrove areas increased double by 2015, but the forest had become more fragmented. We can be seen those changes in land use mainly come from land conversion from forest to shrimp farms, settlements areas and public constructions. The conserving existing mangrove forest in Mui Ca Mau should consider the relations between mangrove health and influencing factors indicated in the manuscript.

Knowledge Management Approach in Comparative Study of Air Pollution Prediction Model

“…In the RF, each node is split using the optimal splitter chosen from a subset of predictors. At every node, random predictors are utilized, and this element of randomness offers overfit protection (Alamsyah & Salma, 2018;Schonlau & Zou, 2020;Yarragunta et al, 2021;Hai et al, 2022;Benifa et al, 2022;Ravindiran et al, 2023;Baladjay et al, 2023;Gupta et al, 2023;Elvin, 2024;Aram et al, 2024). When presented with new data, each DT makes its own prediction.…”

Analisis Kesehatan Mangrove di Taman Wisata Alam Angke Kapuk, Jakarta Utara

“…Pada tahun 1998 ekosistem mangrove di kawasan TWAAK 90% telah rusak parah dikarenakan aktivitas tambak ilegal. PT (Schaduw 2021;Hai et al 2022;Sugiana et al 2022).…”

Seeing the Forest for the Trees: Mapping Cover and Counting Trees from Aerial Images of a Mangrove Forest Using Artificial Intelligence

“…This has been fueled by the advancements in remote sensing, image analysis and machine learning. These advancements have enabled analyses of mangrove forests and their dynamics across vast scales [20][21][22]. In these studies, spectral indices, such as normalized difference vegetation index, are calculated for each pixel to describe and classify mangrove forests, being able to label the tree species and tree density within a pixel, as well as canopy width and forest fragmentation [22].…”

“…These advancements have enabled analyses of mangrove forests and their dynamics across vast scales [20][21][22]. In these studies, spectral indices, such as normalized difference vegetation index, are calculated for each pixel to describe and classify mangrove forests, being able to label the tree species and tree density within a pixel, as well as canopy width and forest fragmentation [22]. The benefits of Earth-observation technologies are the large spatial coverage and frequent acquisition of images.…”