Towards a standardized, ground-based network of hyperspectral measurements: Combining time series from autonomous field spectrometers with Sentinel-2

Remote Sensing of Environment, Journal Year: 2024, Volume and Issue: 303, P. 114013 - 114013

Published: Jan. 25, 2024

Language: Английский

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Mapping the evolution patterns of urbanization, ecosystem service supply–demand, and human well-being: A tree-like landscape perspective

Ecological Indicators, Journal Year: 2023, Volume and Issue: 154, P. 110591 - 110591

Published: July 3, 2023

Ecosystem services (ESs) are closely related to human well-being (HWB). Recently, urbanization has increased worldwide, which had a significant impact on the ecosystem service supply–demand (ESSD) and HWB. However, previous studies have primarily focused spatiotemporal pattern of ESSD HWB, while ignoring their evolutionary pathways, especially in karst areas. We aimed quantify optimal trade-offs under constraints nonlinear relationship between further constructing tree-like framework explore pathways urbanization, ESSD, HWB from landscape evolution perspective. used production possibility frontier (PPF) three ESSDs, generalized additive model (GAM) fit geographic tree (Geotree) construct structure levels, comprehensive (CESD), There is trade-off deficit carbon storage (CS) water yield (WY), but synergy WY surplus FS. Further, there CSs food supply (FS). The response CS not obvious, FS obvious. Based Geotree model, CESD, present strong coupling relationships, show characteristics clustering, stratified heterogeneity, evolution.

Language: Английский

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Optimal allocation of soil and water resources in agriculture under the total regional evapotranspiration indicator: A case study in Guangping, China

Ecological Indicators, Journal Year: 2024, Volume and Issue: 160, P. 111855 - 111855

Published: March 1, 2024

There is a mismatch between crop water demand, the spatial and temporal distribution of natural rainfall, surface sources, arable land resources in North China Plain. This has been compensated for by massive groundwater exploitation, as result, ground levels have continuously declined landing funnels formed some areas. Consequently, there an urgent need rational allocation soil resources. In this study, regional types corresponding crops Guangping County, Hebei Province, China, alongside annual average total consumption were used to determine reasonable allocations planting structures, with aim maximizing utilization efficiency economic benefits while also achieving dynamic equilibrium. Daily meteorological data from 1973 2021, including precipitation, temperature, sunshine hours, wind speed, humidity, well data, irrigation systems growth status, collected. Water models eight seven typical forming 56 calculation partitions established obtain values different crops. The maximum benefit water-use then objective functions control condition non-dominated sorted genetic algorithm-Ⅱ (NSGA-II), optimize region; adjusted quantities cultivated under study area obtained. areas growing sweet potato vegetable-fruits found increase 0.5255 km2 4.4452 km2, respectively, when compared pre-optimization period, whereas winter wheat-summer maize, millet, peanut, cotton, summer maize decreased 1.3481 0.1812 0.7316 2.0896 0.62 respectively. increased 810.37 853.64 million yuan, 1.5426 kg/m3 1.5859 kg/m3. results provide basis resource management region technical reference similar improve agricultural benefits.

Language: Английский

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Exploring the dynamic equilibrium relationship between urbanization and ecological environment -- A case study of Shandong Province, China

Ecological Indicators, Journal Year: 2023, Volume and Issue: 158, P. 111456 - 111456

Published: Dec. 19, 2023

To realize the coordinated development of urbanization and ecological environment is a research hotspot in recent years. There very complicated relationship between them. Understanding their key to development. In this paper, long-term dynamic balance behavior was studied by means equilibrium model error correction (ECM) based on data Shandong Province. order comprehensively reflect environment, paper employed comprehensive evaluation construct index respectively, used coupling coordination degree (CDE) relative (RDE) study changes two. The results showed that: (1) Province becoming more harmonious, type them has gradually developed from extremely uncoupling (EUC) highly (HC) type; (2) long run, there Province, can be achieved through short-term adjustment. Therefore, correct understanding laws provide corresponding theoretical basis for policy makers, shorten time reach an state.

Language: Английский

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Spatio-temporal dynamics of ecosystem service values in China’s Northeast Tiger-Leopard National Park from 2005 to 2020: Evidence from environmental factors and land use/land cover changes

Ecological Indicators, Journal Year: 2023, Volume and Issue: 155, P. 110734 - 110734

Published: Sept. 15, 2023

The Northeast Tiger-Leopard National Park (NTLNP) in China is an area of great ecological significance, known for its abundant wilderness resources and biodiversity. However, the habitats NTLNP have been threatened by historical land use cover (LULC) changes caused urban expansion economic development. In response to this challenge, study based on remote sensing-derived LULC products from 2005 2020, utilized equivalent factors refined ecosystem service values (ESV) assessment model, conjunction with Moran's I Getis-Ord Gi* spatial analysis methods evaluate macro-scale pixel-scale spatio-temporal dynamics ESV NTLNP. We also employed cold hot spot (CHSA) method identify zones improvement degradation within Our findings indicate that over past 15 years: (1) Forestland possesses most substantial proportion (97.48%), regulating value major contributor among four types services (71.31%). (2) Despite a fluctuating trend increasing, decreasing, then growing overall growth NTLNP, benefits difficult return their peak 42.184 billion CNY 2015. (3) waters exhibit high dynamic 27.91%, underestimation 28.4 million CNY. (4) unveils dispersed distribution pixels, cumulative significantly larger than share pixels. (5) CHSA results showed areas intensive human activity, such as towns surrounding areas, tend experience degradation, while regions effective river management, basin Hunchun county-level city, improvement. Therefore, delineates regulatory result CHSA-based decision tree, pinpoints ecologically core further categorizes these risk levels types, helping maintain balance between allocation physical park management primary conservation needs national park. Moreover, recommends policymakers take measures strengthen mitigation, enhance focus where fragile, optimize internal parks.

Language: Английский

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A spectrum contextual self-attention deep learning network for hyperspectral inversion of soil metals

Ecological Indicators, Journal Year: 2023, Volume and Issue: 152, P. 110351 - 110351

Published: May 20, 2023

The retrieval of heavy metal concentrations in naturally contaminated arable soils through hyperspectral reflectance has become increasingly significant recent years. Presently, both conventional and deep learning-oriented inversion methodologies mandate the development individualized models for each metallic element, while refraining from leveraging distant dependencies to attain inherent heterogeneity unique species. This intricacy renders attainment precise outcomes particular a formidable challenge. To tackle this challenge, current study introduces Spectrum Contextual Self-Attention Deep Learning Network (SCSANet), which is created encompass long-range spectral context by employing self-attention network. model also includes efficient input techniques, as well simultaneous output multiple metals. Experiments are carried out area assess precision proposed identifying lead (Pb), copper (Cu), cadmium (Cd), mercury (Hg) concentrations. findings reveal that does not have impact on pre-processed spectra, enhancing technique neighbourhood spectra can boost accuracy inversion. SCSANet herein achieves highest metals with similar magnitude content, outperforms compared method terms accuracy.

Language: Английский

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Evaluating soil loss and sediment yield for sustainable management of the Hassan II dam within Morocco’s Upper Moulouya watershed using RUSLE model and GIS

Environmental Earth Sciences, Journal Year: 2024, Volume and Issue: 83(7)

Published: March 25, 2024

Language: Английский

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Deurbanizing for conservation and adapting: framing ecological restoration as a nature-based solution in La Pletera salt marsh, Catalonia (Spain)

Frontiers in Water, Journal Year: 2025, Volume and Issue: 6

Published: Jan. 6, 2025

Tackling climate change and biodiversity loss are two of the great global challenges 21st century. The nature-based solutions (NbS) approach creates an opportunity to meet efforts on agendas while producing other co-benefits beyond resilience conservation. This becomes even more relevant in areas with both high vulnerability special interest for Coastal wetlands Mediterranean basin under severe threat from urban sprawl, mass tourism change. lagoons, dune systems halophilic ecosystems considered as priority habitats community conservation by European Habitats Directive. In Catalan coast, these fragmented isolated, ecological protection restoration essential. this context, present work analyzes case de-urbanization La Pletera salt marsh Life project (2014–2018), interpreting it within NbS assessing its effectiveness a strategy adaptation analysis brings insights assessment during first years after implementation, gathers elements factors constraints that made implementation possible reflects future so is lasting medium long term.

Language: Английский

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Evaluating the Impacts of Riparian Plants on Flood Hazard Within Vegetated Rivers

Journal of Flood Risk Management, Journal Year: 2025, Volume and Issue: 18(2)

Published: May 13, 2025

ABSTRACT In the last few years, vegetated rivers have been managed with main purpose of achieving water drainage and improving conveyance through vegetation removal. However, this leads to peak discharge augmentation wave travel time reduction. This study assesses shredding selective cut impacts on flood risk management. Flow resistance was obtained considering morphology hydrodynamic measurements performed during two field campaigns conducted just before destructive in growing season after 4 years. Järvelä model adopted by modeling shrubby Leaf Area Index ( LAI ), while Nepf selected for herbaceous vegetation, based flexible plants reconfiguration, strongly dependent species type. Finally, Baptist et al. employed woody rigid plants, modeled as a random or staggered array cylinders. Results one‐dimensional unsteady hydraulic numerical simulations show higher levels years severe cut, thinning reduces them. methodology allows quantification propagation flow delay: celerity decreases up 21% 34% (for undisturbed clear scenarios, respectively) because re‐growth, causing delay from 20 30 min at downstream cross‐section.

Language: Английский

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Evaluation of gridded precipitation data in water availability modeling in CONUS

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 628, P. 130575 - 130575

Published: Dec. 8, 2023

Language: Английский

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