Simulating daily PM2.5 concentrations using wavelet analysis and artificial neural network with remote sensing and surface observation data

Chemosphere, Journal Year: 2023, Volume and Issue: 340, P. 139886 - 139886

Published: Aug. 21, 2023

Language: Английский

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Towards sustainable coastal management: a hybrid model for vulnerability and risk assessment

Journal of Coastal Conservation, Journal Year: 2024, Volume and Issue: 28(4)

Published: July 24, 2024

Abstract This paper presents the development of a Hybrid Model (HM) integrated with Bayesian Network (BN) for comprehensive coastal vulnerability and risk assessment, focus on Konyaaltı Beach, Antalya, Turkey. The HM incorporates critical environmental parameters such as wind, waves, currents, sediment transport to simulate conditions at vulnerable areas perform assessments storm effects, flooding, erosion. model includes submodules predicting storms, quantifying rates, assessing tsunami inundation severity, categorizing storms based beach typologies. Adaptive Neuro-Fuzzy Inference System (ANFIS) is utilized significant wave height predictions, enhancing model's accuracy. integration hydrodynamic modeling, networks, ANFIS offers robust framework informing sustainable management practices. study's results highlight necessity strategies, including adaptive infrastructure design, zoning land use regulations, ecosystem-based management, continuous monitoring refinement enhance resilience against dynamic forces. research provides valuable insights mitigating impacts hazards urban developments, contributing advancement management.

Language: Английский

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Importance of ecosystem services and ecological security patterns on Hainan Island, China

Frontiers in Environmental Science, Journal Year: 2024, Volume and Issue: 12

Published: Feb. 13, 2024

The identification and restoration of damaged ecosystems are key to achieving ecological conservation sustainable. Hainan Island is experiencing a serious crisis biodiversity habitat degradation. Therefore, its has become priority challenge for China. This study aimed construct multi-level security pattern (ESP) based on the synergy multiple ecosystem service functions identify important elements areas. Based InVEST model, circuit theory series GIS spatial analysis methods, importance (biodiversity maintenance, water conservation, carbon sequestration, soil conservation) was evaluated, sources, corridors, pinch points, barrier points were identified. results as follows: 1) best habitats in distributed central mountainous area with diverse ecosystems, an 10982.5 km 2 , accounting 34.25% total suitable habitats. Low-level mainly tableland coastal zones. Human disturbance direct cause landscape patch fragmentation low-level 2) A 65 large sources 8238.23 identified, which concentrated areas part island. 3) Crucial comprised forests bodies. Ecological corridors radiated across entire form spider web connected all patches, including 138 (73 primary secondary corridors), 222 198 points. In addition, identified urgent need protection restoration. general, natural supplemented by anthropogenic restoration, demand equal attention nature conservation. plan developed this will enrich theoretical achievements territorial planning Island, provides clear guidance alleviating contradiction between land use economic development Island.

Language: Английский

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Detecting Shoreline Changes on the Beaches of Hainan Island (China) for the Period 2013–2023 Using Multi-Source Data

Water, Journal Year: 2024, Volume and Issue: 16(7), P. 1034 - 1034

Published: April 3, 2024

This study presents an in-depth analysis of the dynamic beach landscapes Hainan Island, which is located at southernmost tip China. Home to over a hundred natural and predominantly sandy beaches, Island confronts significant challenges posed by frequent marine disasters human activities. Addressing urgent need for long-term studies dynamics, this research involved use CoastSat extract analyze shoreline data from 20 representative beaches calculate slopes 119 around island period 2013 2023. The objective was delineate patterns evolution that contribute prevention sediment loss, mitigation coastal hazards, promotion sustainable zone management. By employing multi-source remote sensing imagery tool, investigation validated slope measurements across selected demonstrating consistency between calculated actual distances despite minor anomalies. effective finite element solution (FES) in 2014 global tidal model corrections further aligned coastlines with mean shoreline, underscoring CoastSat’s utility enabling precise studies. revealed seasonal variations positions, approximately half monitored sites showing seaward progression summer retreat winter, were linked wave height. southern exhibited distinct variations, contrasted general trend due differing impacts. western shores showed erosion, while northern eastern displayed accretion. indicated had steeper slopes, areas more pronounced These findings highlight critical role integrated management erosion control strategies safeguarding Island’s beaches. understanding mechanisms driving regional changes, measures can be developed mitigate impacts enhance resilience ecosystems amidst changing environmental conditions. provides foundational basis future efforts aimed development utilization resources on Island.

Language: Английский

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Assessment of Rapid Urbanization Effects on Land Use Dynamics: A Google Earth and GIS Approach in Kemalöz District, Uşak, Türkiye - An Earth Science Perspective

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, Journal Year: 2025, Volume and Issue: 13(1), P. 286 - 298

Published: Jan. 30, 2025

As urbanization continues to increase, the concerns about sustainable land use and management are also growing. Thus, there has been an increasing number of scientific research studies conducted on this phenomenon. In many cases, these have performed by using expensive remote sensing software with low-resolution (>30m) Landsat imagery. On other hand, Google Earth Pro imageries a geometric resolution 1.5 meters 2 for most covered areas in world. The objective study is investigate changes Kemalöz District Uşak, Türkiye, which fastest-growing district, utilizing GIS rapid assessment change between 2005 2024, offering alternative costly aims evaluate relative benefits integrating geoscience analyze land-use provide insights policymakers local officials make informed decisions effective way manage mitigate negative effects urbanization. findings indicated that build-up increased from 1,734 2,755 km2 2024. Vegetation 1,081 1,392 Agricultural decreased 1,781 1,149 Barren 1,803 1,103 km2. This suggests significant urban development or infrastructure expansion occurred area over 19 years.

Language: Английский

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Wealth and Altitude Explain Urban Plant Diversity in Residential Areas of Hainan, China

Land, Journal Year: 2025, Volume and Issue: 14(2), P. 328 - 328

Published: Feb. 6, 2025

Rapid urbanization worldwide poses significant challenges to biodiversity, as urban habitat fragmentation coexists with diverse landscape forms. Residential areas, a critical component of ecology, are essential for understanding the mechanisms that drive biodiversity conservation and harmonious coexistence humans nature. Additionally, gradient distribution remains focal point in ecological research, aiding comprehension fundamental species–environment interactions. In this study, we sampled 269 residential areas across fifteen counties municipal districts on Hainan Island investigate alongside characteristics, well socio-economic environmental variables. Utilizing Generalized Linear Model (GLM), analyzed differences commonalities plant driving factors through horizontal vertical two-dimensional models box plots, Principal Component Analysis (PCA), Coordinate (PCoA), path examine existence, distribution, nature these gradients. Our findings indicate following: different types driven by distinct mechanisms; cultivated plants primarily valued ornamental purposes, whereas rural their edible value is emphasized. Urban diversity was influenced altitude fundamentally affected economic factors. analyses identified influencing various established two primary gradients within areas: housing prices corresponding changes elevation. Both were found be outcomes factors, highlighting role development shaping biodiversity.

Language: Английский

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Analysis of Temporal and Spatial Changes in Ecological Environment Quality on Changxing Island Using an Optimized Remote Sensing Ecological Index

Sensors, Journal Year: 2025, Volume and Issue: 25(6), P. 1791 - 1791

Published: March 13, 2025

In light of global climate change and accelerated urbanization, preserving restoring island ecosystems has become critically important. This study focuses on Changxing Island in Dalian, China, evaluating the quality its ecological environment. The research aims to quantify changes since 2000, with an emphasis land use transformations, coastline evolution, driving factors behind these changes. Using Google Earth Engine (GEE) platform remote sensing technology, index (IRSEI) was developed. development IRSEI grounded several key parameters, including normalized difference vegetation (NDVI), wetness (WET), surface temperature (LST), multiband drought stress (M-NDBSI), intensity (LUI). results show that, 2002, types have undergone significant changes, a notable decrease arable increase built-up areas, reflecting ongoing urbanization process. With respect total length steadily increased from 2002 2022, average annual growth rate 2.15 km. driven mainly by reclamation infrastructure construction. analysis further revealed clear deterioration environment during period. proportion excellent area decreased 39.3% 8.89% whereas areas classified as poor very 56.23 km2 129.84 km2, both which set new historical records. These findings suggest intensify, ecosystem is at risk degradation. optimized effectively captured island, improved long-term stability index, adequately met requirements for large-scale monitoring.

Language: Английский

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Research on Land Use Pattern and Ecological Risk of Lanzhou–Xining Urban Agglomeration from the Perspective of Terrain Gradient

Land, Journal Year: 2023, Volume and Issue: 12(5), P. 996 - 996

Published: April 30, 2023

At the intersection of Qinghai–Tibet Plateau and Loess Plateau, topographic factors often profoundly affect evolution regional land use pattern ecological risk. This paper takes Lanzhou–Xining urban agglomeration as research area, divides gradient based on index, analyzes characteristics using transfer matrix model, dynamic attitude state degree influence distribution model. same time, an risk evaluation index system is constructed, spatial principal component method used to evaluate risk, topography discussed. The results show that from 1990 2020, area construction in study increased by 1045.807 km2 587.41 km2, with most significant changes occurring unused land. It found cultivated land, water are dominant low terrain, while woodland, grassland mainly distributed middle high terrain. During period, midwest southeast decreased, northeast first then although generally there was increasing trend. Moran’s I varied 0.942 0.955 indicating highly positively correlated space, aggregation effect obvious. Low moderately areas this can make a lot sense for protection, resource utilization sustainable development agglomeration.

Language: Английский

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Temporal-spectral-semantic-aware convolutional transformer network for multi-class tidal wetland change detection in Greater Bay Area

ISPRS Journal of Photogrammetry and Remote Sensing, Journal Year: 2024, Volume and Issue: 216, P. 126 - 141

Published: Aug. 6, 2024

Language: Английский

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Luxury Effect, Heritage Effect, and Land Use Hypotheses Revealing Land Cover Distribution in Hainan Island, China

Sustainability, Journal Year: 2024, Volume and Issue: 16(16), P. 7194 - 7194

Published: Aug. 21, 2024

Land cover analysis is a key method used to understand past land use patterns and explore the driving forces processes behind them. This study focuses on in 18 counties cities of Hainan Island, delving into factors specific areas including southern, northern, eastern, western, inland, coastal regions. The effects socio-economic factors, landscape pattern, urban functional units are considered, three hypotheses proposed explain observed trends. results indicate that house prices positively correlated with construction area, woodlands land, green space, thereby supporting luxury effect hypothesis cover. In addition, age was negatively confirming role inverse legacy Other relationships between emphasized importance planning. These will help decision-makers managers better current drivers cover, allowing for more scientific basis when planning managing

Language: Английский

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